ba367e-ss rugged one input intrinsically safe counter...3.1 atex gas certification 3.2 zones, gas...

Issue: 69th July 2019

BA367E-SSRugged one inputIntrinsically safe

CounterIssue 6

1. Description

2. Operation2.1 Initialisation2.2 Controls2.3 Displays

3. Intrinsic Safety Certification3.1 ATEX gas certification3.2 Zones, gas groups & T rating3.3 Special conditions for safe use3.4 Power supply3.5 Pulse input terminals

3.5.1 sensors that do not require energising.

3.5.2 sensors that do require energising.3.6 Remote reset terminals3.7 Certification label information

4.System Design for Hazardous Areas4.1 Use with Zener barriers

4.1.1 Power supply4,1,2 Pulse input4.1.3 Switch contact input4.1.4 2-wire proximity detector input4.1.5 Open collector input4.1.6 Magnetic pick-off input4.1.7 Voltage pulse input4.1.8 Remote reset

4.2 Use with galvanic isolators4.2.1 Power supply4.2.2 Pulse input4.2.3 Switch contact input4.2.4 2-wire proximity detector input4.2.5 Open collector input4.2.6 Magnetic pick-off input4.2.7 Voltage pulse input4.2.8 Remote reset

4.3 Use in Ex e or Ex p panel enclosure located in Zones 1 or 2.4.3.1 Installation in Ex e panel enclosure4.3.2 Installation in Ex p panel enclosure

5. Installation5.1 Location5.2 Installation procedure5.3 EMC5.4 Counter earthing5.5 Scale card

6. Configuration and Calibration6.1 Configuration structure6.2 Accessing the configuration functions6.3 Summary of configuration functions6.4 Input: inPut

6.5 Input type: inP. tYPE

6.6 Input debounce: dEbouncE

6.7 Input pulse counting edge: Cnt EdgE

6.8 Display update interval: uPdAtE

6.9 Upper display: di5P-1

6.10 Lower display: di5P-2

6.11 Position of the decimal points: dP

6.12 Total scale factor: 5CALE . t

6.13 Rate scale factor: 5CALE . r

6.14 Timebase: t-bA5E

6.15 Display filter: FiLtEr

6.16 Direction of count: uP or dn

6.17 Reset value: CLr VAL

6.18 Local reset: LoC CLr

6.19 Local total reset: Clr tot

6.20 Local grand total reset: Clr Gtot

6.21 Reset grand total from configuration menu: Clr Gtot

6.22 Security code: CodE

6.23 Reset configuration to factory defaults: r5Et dEF

6.24 Display overflow

7. Configuration example

8. Maintenance8.1 Fault finding during commissioning8.2 Fault finding after commissioning8.3 Servicing8.4 Routine maintenance8.5 Guarantee8.6 Customer comments

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CONTENTS

The BA367E-SS is CE marked to show compliance with the European Explosive Atmospheres Directive2014/34/EU and the European EMC Directive 2014/30/EU

9. Accessories9.1 Scale card

9.2 Tag information

9.3 Alarms9.3.1 Solid state output9.3.2 Intrinsic safety9.3.3 Configuration summary9.3.4 Alarm enable: EnbL

9.3.5 Type of alarm: tYPE

9.3.6 Setpoint adjustment: 5P1x & 5P2x

9.3.7 Alarm function: Hi. Lo

9.3.8 Alarm output status: no . nC

9.3.9 Hysteresis: H5tr

9.3.10 Alarm delay: dELA

9.3.11 Alarm silence time: 5IL

9.3.12 Flash display when alarm occurs: FL5H

9.3.13 Access Setpoint: AC5P

9.3.14 Adjusting alarm setpoints fromdisplay mode.

9.4 Pulse Output9.4.1 Intrinsic safety9.4.2 System design9.4.3 Configuration9.4.4 Access Pulse output sub-menu:

PuL5E oP

9.4.5 Enable pulse output: EnbL

9.4.6 Source of pulse output: 5ourCE

9.4.7 Divide output pulse frequency:diVidE

9.4.8 Output pulse width: durAtion

9.5 4/20mA output9.5.1 Intrinsic safety9.5.2 System design9.5.3 Configuration 9.5.4 Access 4/20mA output

sub-menu: 4-20 oP

9.5.5 Enable 4/20mA output: EnbL

9.5.6 Select rate or total source:4-20tYPE

9.5.7 Display corresponding to4mA output: 4 . 000

9.5.8 Display corresponding to20mA output: 20 . 000

9.6 Display backlight

Appendix 1 Dust certification

Appendix 2 IECEx certification

Appendix 3 ETL and cETL certification

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CONTENTS CONTINUED

1. DESCRIPTIONThis rugged intrinsically safe, one input Counter maybe configured to count input pulses from a widevariety of sensors and to display the total number inengineering units. A smaller five digit display may beactivated to show the input pulse rate in engineeringunits per second, minute or per hour.

This instruction manual supplements the abbreviatedinstruction sheet supplied with each instrument.

The BA367E-SS has been certified intrinsically safefor use in gas and dust hazardous areas by NotifiedBody Intertek Testing and Certification Ltd andcomplies with the European ATEX Directive 2014/34/EU. It has a rugged stainless steel enclosure and animpact resistant glass window. In addition to normalintrinsically safe applications, the certification allowsit to be installed in an Ex e, Ex n, Ex p or Ex t panelenclosure without invalidating the enclosure'scertification.

For international applications the BA367E-SS alsohas IECEx certification which is described inAppendix 2.

For US and Canadian applications the BA367E-SShas ETL and cETL, see Appendix 3.

2. OPERATIONFig 1 shows a simplified block diagram of theBA367E-SS Counter. The instrument can besupplied with a factory fitted internally powereddisplay backlight, plus one of the following threefactory fitted accessories:

Dual isolated alarms

or Isolated pulse output

or Isolated 4/20mA output

Fig 1 BA367E-SS block diagram

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2.1 InitialisationEach time power is applied to a BA367E-SS Counterinitialisation is performed. After a short delay thefollowing display sequence occurs:

All segments of the display are activated

Counter starts functioning, using theconfiguration information stored in theinstrument’s permanent memory. Unlesstotal and grand total displays have been resetto zero, new pulses will be added to theexisting totals.

2.2 Controls The BA367E-SS Counter is controlled andconfigured via four front panel push buttons. In thedisplay mode i.e. when the instrument is counting,the push button functions are:

Push Button Functions

( + ) Access to configuration menu

& + * If Local Total Reset CLr tot in theinstrument configuration menu hasbeen activated, operating the & and* buttons simultaneously for threeseconds will reset the total display tozero and clear any pulses stored in theoptional pulse output.See 6.19

) + & Grand total - shows Lo followed by leastsignificant 8 digits of the 16 digit grandtotal.

) + * Grand total - shows Hi followed by themost significant 8 digits of the 16 digitgrand total.If Local Grand Total Reset CLr Gtot inthe instrument configuration menu hasbeen activated, operating the ) and* buttons simultaneously for tenseconds will result in Clr . no beingdisplayed with the no flashing.Operating the * or & button willchange the display to Clr . YE5, the )button will then reset the grand total tozero which will be confirmed by a briefdisplay of Gt Clrd. See 6.20

( + & Shows firmware version

Note: When optional alarms are fitted, theBA367E-SS Counter may be configured to providedirect access to the alarm setpoints from the displaymode when the ( and * buttons are operatedsimultaneously. See 9.3.13 and 9.3.14

2.3 DisplaysThe BA367E-SS Counter has two digital displaysand associated annunciators, plus a pulse inputindicator as shown on the front page of this manual.

Total Shows the total pulse count on thedisplay upper eight digit display. May be

reset to zero via front panel pushbuttons or by a remote reset switch.

Rate Shows the pulse rate on the lowerDisplay six digit display. Total and rate

displays may be reversed.

Pulse input This disc in the lower left hand cornerindicator of the display 'rotates' for two

seconds each time an input pulse isreceived on either input. Appears torotate continuously when combinedinput frequency on both inputsexceeds 0.5Hz.

Reset Activated while the total displayannunciator is being reset via the front panel

push buttons, or the external resetterminals.

Rate Identifies rate displayannunciator

Total Identifies total displayannunciator

RTx Retransmitted pulse annunciator annunciator.

Depends upon the setting of 5ource

in the pulse output configurationmenu.

5caled:

Annunciator activated each timepulse output open collector is on,i.e. Ron is less than 60Ω + 3V.

direct:

Annunciator continuously activated.

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3. INTRINSIC SAFETY CERTIFICATIONThe BA367E-SS Counter has ATEX and IECEx gasand dust certification. This section of the instructionmanual describes ATEX gas certification, dust,IECEx and other approvals are each described inseparate appendixes to this manual.

3.1 ATEX gas certificationNotified Body Intertek Testing and Certification Ltdhave issued the BA367E-SS with an EC-TypeExamination Certificate number ITS16ATEX28408X.This confirms compliance with harmonisedEuropean standards and it has been used to confirmcompliance with the European ATEX Directive forGroup II, Category 1G equipment. The Countercarries the community mark and subject to localcodes of practice may be installed in any of theEuropean Economic Area (EEA) member countries.ATEX certificates are also acceptable forinstallations in Switzerland.

This section of the instruction manual describesATEX installations in explosive gas atmospheresconforming with EN60079-14 Electrical installationsdesign, selection and erection. When designingsystems for installation outside the UK the localCode of Practice should be consulted.

3.2 Zones, gas groups and T ratingThe BA367E-SS Counter has been certifiedEx ia IIC T5 Ga. When connected to a suitablesystem it may be installed in:

Zone 0 explosive gas air mixturecontinuously present.

Zone 1 explosive gas air mixture likelyto occur in normal operation.

Zone 2 explosive gas air mixture notlikely to occur, and if it does will only exist for a short time.

Be used with gases in groups:Group A propaneGroup B ethyleneGroup C hydrogen

Having a temperature classification of:T1 450°CT2 300°CT3 200°CT4 135°CT5 100°C

At ambient temperatures between:-40 to +60oC When installed as an

intrinsically safe Ex i instrument in an Ex e, Ex n, Ex p or Ex t enclosure.

-40 to +70oC When used as an intrinsicallysafe Ex i instrument not in an Ex e, Ex n, Ex p or Ex t enclosure.

3.3 Special conditions for safe useThe ATEX intrinsic safety certificate number has an‘X’ suffix indicating that for some applications specialconditions apply for safe use.

When installed in an Ex e, Ex n, Ex p or Ex tpanel enclosure all connections to theBA367E-SS must be made by appropriatelyrated Zener barriers or galvanic isolators.

This means that when installed in an Ex e, Ex n,Ex p or Ex t panel enclosure the BA367E-SSremains an intrinsically safe instrument and mustcomply with the installation requirements shown inthis manual.

The certificate also states:

The front of the stainless steel enclosurecomplies with the requirements for Ex e, Ex nEx p & Ex t type of protection.

Therefore when correctly installed the BA367E-SSCounter will not invalidate the Ex e, Ex n, Ex p orEx t panel enclosure certification.

Note: At temperatures below -20°C the instrumentwill continue to function, but the display response willbecome slower and the contrast will be reduced.

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3.4 Power supplyWhen installed in a hazardous area the BA367E-SSCounter should be powered via a certified Zenerbarrier or galvanic isolator from a dc supply locatedin the safe area or from associated apparatus withan intrinsically safe output.

The input safety parameters of terminals 1 and 2are:

Ui = 28V dcIi = 200mA dcPi = 0.84W

Any certified Zener barrier or galvanic isolator withoutput safety parameters equal to or less than theselimits may be used.

The maximum equivalent capacitance andinductance between terminals 1 and 2 is:

Ci = 2nFLi = 4µH

To determine the maximum permissible cableparameters the above figures, which are small andmay be ignored in many applications, should besubtracted from the maximum permitted cableparameters specified for the Zener barrier orgalvanic isolator powering the BA367E-SS Counter.

3.5 Pulse input terminals The BA367E-SS pulse input is a separateintrinsically safe circuit with the negative terminalinternally connected to the negative side of thepower supply terminal 2 and to the reset terminalRS2. See Fig 1.

Some types of sensor that may be connected to theBA367E-SS input, such as a switch contact or a2-wire proximity detector, require energising todetermine their state. For sensors requiringenergising fitting an external link between terminals3 & 4 of the BA367E-SS connects an internal 7V,6mA supply to the input. Energising is not requiredwhen the BA367E-SS input is connected to avoltage source.

Fitting a link changes the output safety parametersof the BA367E-SS Counter pulse input as shown inthe following table which also shows which types ofsensor require energising (link fitting).

Safety parameters Type of input Link 3 & 4 Uo Io Po

Switch contact Yes 10.5V 8.2mA 25mWProximity detector Yes 10.5V 8.2mA 25mWOpen collector Yes 10.5V 8.2mA 25mWMagnetic pick-off No 1V 11µA 3µWVoltage input (low) No 1V 11µA 3µWVoltage input (high) No 1V 11µA 3µW

3.5.1 Sensors that do not require energising

Magnetic pick-offs and voltage pulse inputs do notrequire energising, see section 3.5. For intrinsicsafety purposes, sources of energy with outputparameters less than 1.5V; 100mA and 25mW areconsidered to be simple apparatus (Clause 5.7 ofEN60079-11), which allows them to be ignored andnot documented when assessing an intrinsic safesystem.

When terminals 3 & 4 are not linked, the BA367E-SSCounter input terminals comply with therequirements for simple apparatus, thus allowing theoutput parameters to be ignored when assessing thesafety of the sensor connected to the input.

This allows almost any certified intrinsically safevoltage pulse circuit or certified magnetic pick-off tobe directly connected to the BA367E-SS Counterinput providing that:

a. The output parameters of the sensor or circuitare equal to or less than:

Uo ≤ 28V dcIo ≤ 200mA dcPo ≤ 0.84W

b. The sensor and associated wiring canwithstand a 500V rms insulation test to earth.The BA367E-SS EC-Type ExaminationCertificate specifies that the equivalentcapacitance and inductance of theBA367E-SS Counter input is:

Ci = 2nFLi = 4H

To determine the maximum permissible cableparameters these figures should besubtracted from the maximum permittedcable parameters specified for the sensor orcircuit connected to the input terminals of theCounter. These input parameters are verysmall and are therefore unlikely to make anysignificant difference to the allowable cableparameters.

c. The sensor is located in the same hazardousarea as the BA367E-SS.

8

3.5.2 sensors that require energisingSwitch contacts, proximity detector or open collectorinputs require energising which is achieved bylinking Counter terminals 3 and 4 together asdescribed in section 3.5. When energised, theoutput parameters of the pulse input terminals 5 and6 are:

Uo = 10.5V dcIo = 9.2mA dcPo = 24mW

These output parameters do not comply with therequirements for simple apparatus and should beconsidered when assessing the safety of the sensorconnected to the totaliser pulse input.

Any certified intrinsically safe sensor may beconnected to a BA367E-SS energised inputproviding that:

a. The sensor is a certified intrinsically safe devicehaving input parameters equal to or greaterthan:

Ui ≥ 10.5V dcIi ≥ 9.2mA dcPi ≥ 24mW

or complies with the requirements for simple apparatus.

b. The sensor and associated wiring canwithstand a 500V rms insulation test to earth.

c. The sensor is located in the same hazardousarea as the BA367E-SS.

d. Minimum operating voltage of a sensorincorporating a NAMUR compliant proximitydetector is less than 7.5V.

3.6 Remote reset terminalsThe BA367E-SS Counter may be reset to zero or tothe reset value by connecting the reset terminalsRS1 and RS2 together for more than one second.These two terminals have the following input andoutput safety parameters:

Uo = 3.8V dcIo = 1.6mA dcPo = 2.0mW

Ui = 28V dcIi = 200mA dcPi = 0.84W

The equivalent capacitance and inductance betweenthem is:

Ci = 0nFLi = 0H

The maximum capacitance and inductance that maybe safely connected between the reset terminalsRS1 and RS2 is:

Co = 40µFLo = 1H

The Counter's total display may be reset from withinthe hazardous area by any mechanically operatedswitch connected directly to terminals RS1 and RS2.To reset the total display from the safe area a Zenerbarrier or intrinsically safe relay is required totransfer the contact closure into the hazardous area.Almost any intrinsically safe relay with certificationpermitting the contacts to be connected toequipment in the hazardous area may be used. Adiode return Zener barrier is not suitable for thisapplication.

Alternatively, the BA367E-SS Counter may beconfigured so that the total display is reset to zerowhen the & and * push buttons are operatedsimultaneously for more than two seconds.See 6.19.

3.7 Certification label informationThe certification information label is fitted in a recesson the top outer surface of the enclosure. It showsthe ATEX and IECEx certification information plusBEKA associates name and location and theinstrument serial number. Non European certificationinformation may also be included.

BA367E-SS Certification information label

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4. SYSTEM DESIGN FOR HAZARDOUS AREAS

4.1 Use with Zener barriersZener barriers are the least expensive intrinsicallysafe interface between a safe and hazardous area.However they require a high integrity earthconnection that may be expensive to install and theydo not provide isolation. When a high integrity earthconnection is not already available, it may be lessexpensive and complicated to use galvanic isolatorsfor the installation of a single BA367E-SS Counter.

Terminals 2, 6 and RS2 of the BA367E-SS Counterare internally connected together. If any of theseterminals are earthed, as shown in Figs 2 & 3, theother common terminals should only be connectedto the same earth, i.e. the barrier busbar, or tocircuits that have 500V insulation to earth.

Any certified Zener barrier may be used with theBA367E-SS Counter providing it's output parametersdo not exceed the input parameters of the terminalsto which it is connected. Only one polarity of Zenerbarrier i.e. positive or negative, may be used in aCounter system.

Fig 2 illustrates the basic circuit that is used for allBA367E-SS Counter installations protected by Zenerbarriers. For simplicity, connections for the optionalalarms, pulse output and 4/20mA output are shownseparately in section 9 this manual.

Fig 2 BA367E-SS used with Zener barriers

Alternatively the pulse input source may be locatedin the safe area. Fig 3 shows how an additionalZener barrier is used to transfer the signal to theCounter in the hazardous area. When more thanone Zener barrier is used in a system all must havethe same polarity. i.e. all positive or all negativebarriers.

When designing a system it is important toremember that terminals 2, 6 and RS2 areinterconnected within the BA367E-SS see Fig 1.

Fig 3 BA367E-SS used with Zener barriers pulse source in safe area.

4.1.1 Power supplyThe BA367E-SS Counter requires a minimum of 10Vbetween terminal 1 & 2 and consumes:

10mA without optional backlightplus 22mA for optional backlightplus 6mA when terminals 3 & 4 are linked

Any certified Zener barrier may be used to power aBA367E-SS Counter providing the output safetyparameters of the barrier are equal to or less thanthe input safety parameters of terminals 1 & 2 of theBA367E-SS Counter.

Although this allows a wide variety of barriers to beused, a positive polarity 28V; 93mA; 300 Zenerbarrier, which has an end-to-end resistance of about340, is an industry standard device which isfrequently used. With this barrier the supply voltagein the safe area, with the counter input energised,must be between 15.5V and the maximum workingvoltage of the Zener barrier which, depending uponmanufacturer, will be approximately 26V. Theminimum voltage increases to 23V if a displaybacklight is fitted.

10

4.1.2 Pulse inputAs shown in Fig 2 the BA367E-SS can count pulsesfrom a wide variety of sensors in the hazardousarea, or from the safe area as shown in Fig 3.

No Zener barrier is required in series with the input ifthe intrinsically safe pulse source is located withinthe same hazardous area as the BA367E-SSCounter. The following table shows the switchingthresholds for the various types of sensor. Forreliable counting the pulse input must fall below thelower threshold and rise above the upper threshold.

Input sensorSwitching thresholds

Lower Upper

Switch 100 1000Proximity detector 1.2mA 2.1mA

Open collector 2k 10kMagnetic pick-off 0mV 40mV peakVoltage pulse low 1.0V 3.0VVoltage pulse high 3.0V 10.0V

4.1.3 Switch contact inputAny mechanically activated switch contact located inthe same hazardous area as the BA367E-SSCounter may be directly connected to pulse inputterminals 5 & 6 providing the switch and associatedwiring can withstand a 500V rms insulation test toearth. Most magnetically activated reed relayscomply with these requirements. The BA367E-SScontains a configurable debounce circuit to preventcontact bounce being counted.

See section 6.6 for details of the maximum countingfrequency.

4.1.4 2-wire proximity detector inputMost certified intrinsically safe 2-wire proximitydetectors complying with NAMUR switchingthresholds may be connected to the BA367E-SSCounter input, providing the input safety parametersof the proximity detector are equal to or greater thanthe output safety parameters of the Counter inputsi.e.


and the minimum operating voltage of the proximitydetector is less than 7.5V.


4.1.5 Open collector inputMost open collector sensors located in the samehazardous area as the BA367E-SS Counter may bedirectly connected to pulse input terminals 5 & 6providing the sensor and associated wiring canwithstand a 500V rms insulation test to earth.


4.1.6 Magnetic pick-off input CoiL in the input configuration menu is a low levelvoltage pulse input intended for use with magneticpick-off sensors producing an ac output. For a CoiL

input with no link between terminals 3 and 4, theBA367E-SS pulse input terminals 5 & 6 comply withthe requirements of simple apparatus. This allowsconnection to any certified intrinsically safe magneticpick-off within the hazardous area having outputparameters equal to or less than:


The maximum permitted cable parameters will bedefined by the magnetic pick-off’s intrinsic safetycertificate less the Counters input parameters Ci & Liwhich are small and can often be ignored.


4.1.7 Voltage pulse input Two voltage pulse input ranges are selectable in theconfiguration menu, VoLt5 L and VoLt5 H. Whenconfigured for either of the voltage pulse ranges,with no link between terminals 3 and 4, theBA367E-SS pulse input terminals 5 & 6 comply withthe requirements of simple apparatus. This allowsconnection to any intrinsically safe voltage sourcewithin the hazardous area having output parametersequal to or less than:


The maximum permitted cable parameters will bedetermined by Co and Lo of the intrinsic safe voltagesource less Ci and Li of the BA367E-SS Counter.


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4.1.8 Remote resetThe BA367E-SS Counter's total display may beremotely reset to zero by connecting terminals RS1& RS2 together for more than one second.Permanent interconnection inhibits counting.Remote resetting may be accomplished by anymechanically operated switch located in the samehazardous area as the Counter providing it and theassociated wiring can withstand a 500V rmsinsulation test to earth. No Zener barrier is required.

A BA367E-SS may also be remotely reset from thesafe area. Any switch may be used but a Zenerbarrier is required to transfer the contact closure intothe hazardous area which may be combined with thesupply barrier so that only one package is required.A diode return barrier is not suitable for thisapplication. Fig 2 illustrates how the BA367E-SSmay be reset from both the safe and the hazardousarea.

Note: The BA367E-SS can be configured to resetthe total display when the & and * push buttonsare operated simultaneously for more than twoseconds - see 6.19.

4.2 Use with Galvanic IsolatorsGalvanic isolators are probably the simplestintrinsically safe interface to install as they provideisolation and do not require a high integrity earthconnection.

Any certified galvanic isolator with output parametersless than the input parameters of the BA367E-SShaving the correct function may be used.

Fig 4 BA367E-SS protected by galvanic isolators.

Fig 4 illustrates the basic circuit that is used for allBA367E-SS Counter installations protected bygalvanic isolators. For simplicity, connections forthe optional alarms, pulse output and 4/20mA outputare shown separately in section 9 of this manual.

Fig 5 BA367E-SS protected by galvanic isolators.pulse source in safe area.

Alternatively the pulse source may be located in thesafe area. Fig 5 shows how an additional galvanicisolator is used to transfer the signal to the BA367E-SS Counter in the hazardous area, although it maybe difficult to find isolators for some sensors.

4.2.1 Power supplyThe BA367E-SS Counter requires a minimum of 10Vbetween terminal 1 & 2 and consumes:

10mA without optional backlightplus 22mA for optional backlightplus 6mA when terminals 3 & 4 are linked

Any certified galvanic isolator may be used to powera BA367E-SS Counter providing the output safetyparameters of the isolator are equal to or less thanthe input safety parameters of terminals 1 & 2.These requirements are not restrictive and allow awide range of galvanic isolators, such as solenoiddrivers, to be used.

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4.2.2 Pulse inputAs shown in Fig 4 the BA367E-SS can count pulsesfrom a wide variety of sensors in the hazardousarea, or from the safe area as shown in Fig 5.

No galvanic isolator is required in series with theinput if the intrinsically safe pulse source is locatedwithin the same hazardous area as the BA367E-SSCounter.

The following table shows the switching thresholdsfor the various types of sensor. For reliablecounting the pulse input must fall below the lowerthreshold and rise above the upper threshold.

Input sensorSwitching thresholds

Lower Upper

Switch 100 1000Proximity detector 1.2mA 2.1mA

Open collector 2k 10kMagnetic pick-off 0mV 40mV peakVoltage pulse low 1.0V 3.0VVoltage pulse high 3.0V 10.0V

4.2.3 Switch contact inputAny mechanically activated switch contact located inthe same hazardous area as the BA367E-SSCounter may be directly connected to pulse inputterminals 5 & 6 providing the switch and associatedwiring can withstand a 500V rms insulation test toearth. Most magnetically activated reed relayscomply with these requirements. The BA367E-SScontains a configurable debounce circuit to preventcontact bounce being counted.


4.2.4 2-wire proximity detector inputMost certified intrinsically safe 2-wire proximitydetectors complying with NAMUR switchingthresholds may be connected to the BA367E-SSCounter input, providing the input safety parametersof the proximity detector are equal to or greater thanthe output safety parameters of the Counter inputsi.e.


and the minimum operating voltage of the proximitydetector is less than 7.5V.


4.2.5 Open collector inputMost open collector sensors located in the samehazardous area as the BA367E-SS Counter may bedirectly connected to the pulse input terminals 5 & 6providing the sensor and associated wiring canwithstand a 500V rms insulation test to earth. Thisincludes most sensor optoisolators.


4.2.6 Magnetic pick-off input CoiL in the input configuration menu is a low levelvoltage pulse input intended for use with magneticpick-off sensors producing an ac output. For a CoiL

input the pulse input terminals 5 & 6 of theBA367E-SS Counter comply with the requirementsof simple apparatus allowing connection to anycertified intrinsically safe magnetic pick-off within thehazardous area having output parameters equal toor less than:


The maximum permitted cable parameters will bedefined by the magnetic pick-off’s intrinsic safetycertificate less the Counters input parameters Ci & Liwhich are small and can usually be ignored,


4.2.7 Voltage pulse input Two voltage pulse input ranges are selectable in theconfiguration menu, VoLt5 L and VoLt5 H. Whenconfigured for either of the voltage pulse ranges, thepulse input terminals 5 & 6 of the BA367E-SSCounter comply with the requirements of simpleapparatus allowing connection to any intrinsicallysafe voltage source within the hazardous areahaving output parameters equal to or less than:


The maximum permitted cable parameters will bedefined by the voltage source intrinsic safetycertificate less the BA367E-SS Counter inputparameters which are small and can usually beignored. See section 6.6 for details of the maximumcounting frequency.

13

4.2.8 Remote resetThe BA367E-SS Counter may be remotely reset byconnecting terminals RS1 & RS2 together for morethan one second. Permanent interconnectioninhibits counting. Remote resetting may beaccomplished by any mechanically operated switchlocated in the same hazardous area as the Counterproviding it and the associated wiring can withstanda 500V rms insulation test to earth. No galvanicisolator is required.

A BA367E-SS Counter may also be remotely resetfrom the safe area. Any switch may be used but agalvanic isolator or IS relay is required to transfer thecontact closure into the hazardous area. Almost anydevice with a contact that may be connected toequipment in the hazardous area may be used forthis application. Fig 4 illustrates how a BA367E-SSCounter may be reset from both the safe and thehazardous area.

Note: The BA367E-SS can be configured to resetthe total display when the & and * push buttonsare operated simultaneously for more than twoseconds - see 6.19.

4.3 Use in an Ex e or Ex p panel enclosure located in Zone 1 or Zone 2.The BA367E-SS ATEX EC-Type ExaminationCertificate allows the Counter to be installed in anEx e IIC Gb increased safety panel enclosurelocated in Zone 1 or 2, or in an Ex p IIC Gbpressurised panel enclosure located in a Zone 1 or 2hazardous area. The BA367E-SS may also beinstalled in an Ex n enclosure located in Zone 2.When installed in a certified panel enclosure theBA367E-SS Counter remains intrinsically safe andmust be protected by a Zener barrier or galvanicisolator as described in sections 4.1 and 4.2.However when correctly installed, the Counter doesnot invalidate the certification of the Ex e, Ex n orEx p panel enclosure allowing installation with higherpower control equipment.

4.3.1 Installation in an Ex e panel enclosureInstallation of a BA367E-SS Counter in anEx e IIC Gb increased safety panel enclosure doesnot invalidate the Ex e panel's ingress and impactprotection as the front of the BA367E-SS complieswith Ex e impact and ingress requirements.Although mounted in an Ex e panel enclosure, theBA367E-SS remains Group II Category1G Ex ia IIC T5 Ga intrinsically safe apparatus andmust therefore be powered via a Zener barrier orgalvanic isolator as described in section 4.1 and 4.2of this manual.

Fig 6 Typical installation in Ex e panel enclosure

14

Some Zener barriers and galvanic isolators arecertified for mounting within a protective enclosurelocated in Zone 2 which may permit them to bemounted in the same Ex e enclosure as theBA367E-SS Counter. Zener barriers and galvanicisolators are not permitted in Ex e enclosureslocated in Zone 1.

The Counter terminals, the wiring to the Counter andthe intrinsically safe interface, if mounted within theenclosure, should be segregated from all other non-intrinsically safe wiring and equipment within thepanel enclosure as required by EN 60079-11Equipment protected by intrinsic safety and EN60079-14 Electrical installations design, selectionand erection.

The Ex e panel enclosure should be fitted with awarning label saying 'Do not open when non-intrinsically safe circuits are energised', alternativelyall bare live non-intrinsically safe parts within thepanel enclosure should have an IP30 cover carryinga warning label 'Do not open when energised'.

The power dissipation within an BA367E-SS fittedwith operational alarms and a backlight is normallyabout 350mW. In the very unlikely event that allthree circuits fail to the worst case condition at thesame time, the total power dissipation rises to 2.5Wwhich could raise the internal temperature of a smallthermally well insulated panel enclosure.

4.3.2 Installation in Ex p panel enclosure withinInstallation of a BA367E-SS Counter in anEx p IIC Gb or Ex p IIC Gc pressurised panelenclosure does not invalidate the Ex p panel'simpact and ingress protection as the front of theCounter complies with Ex p impact and ingressrequirements. Although mounted in an Ex p panelenclosure, the BA367E-SS remains Group IICategory 1G Ex ia IIC T5 Ga intrinsically safeapparatus and must therefore be powered via aZener barrier or galvanic isolator as described insection 4.1 and 4.2 of this manual to ensure that theinstrument's front panel push button switches arenonincendive.

When installed in an Ex p panel enclosure the fourvents at the rear of the Counter which are shown inFig 8 should not be obstructed.

Zener barriers and galvanic isolators may beinstalled in the same Ex p enclosure as theBA367E-SS. All may be mounted in an Ex pxenclosure installed in Zones 1 or 2, or in an Ex pzenclosure installed in Zone 2, both of which have anon-hazardous interior. Some Zener barriers andgalvanic isolators may have certification permittinginstallation within an Ex py enclosure which has aZone 2 interior. The Counter's terminals, the wiring to the Counterand the intrinsically safe interface, if mounted within

the enclosure, should be segregated from all othernon-intrinsically safe wiring and equipment within thepanel enclosure as required by EN 60079-11Equipment protected by intrinsic safety and EN60079-14 Electrical installations design, selectionand erection.

If live maintenance is anticipated, it is recommendedthat the Ex p panel enclosure should be fitted with awarning label saying 'Do not open when non-intrinsically safe circuits are energised', alternativelyall bare live non-intrinsically safe parts within thepanel enclosure should have an IP30 cover carryinga warning label 'Do not open when energised'.

Fig 7 Typical installation in Ex p panel enclosure

15

5. INSTALLATION

5.1 LocationThe BA367E-SS has a stainless steel case with a10mm thick toughened glass window. The caseprovides 7J and the window 4J front of panel impactprotection. The captive silicone gasket, which sealsthe joint between the instrument and the panelenclosure, ensures IP66 front of panel ingressprotection. The rear of the Counter has IP20protection.

Although the front of the BA367E-SS has IP66protection, it should be shielded from continuousdirect sunlight and severe weather conditions.

The BA367E-SS may be located in Zone 0, 1 or 2providing that the operating temperature is between–40°C and +60°C and the installation complies withthe certification requirements.

Installation in Ex e and Ex p panel enclosures aredescribed in sections 4.3.1 and 4.3.2.

Fig 8 show the overall dimensions of theBA367E-SS together with the recommended panelenclosure cut-out dimensions and terminal locations.

5.2 Installation Procedure

a. Cut the aperture specified in Fig 8 in the panelenclosure. Ensure that the edges of aperture arede-burred.

b. Inspect the Counter's captive gasket and ensurethat it is not damaged before inserting theCounter into the panel enclosure aperture.

c. If the enclosure panel is less than 1.0mm thick, oris non-metallic, an optional BEKA stainless steelsupport plate should be slid over the rear of theCounter before the panel clamps are fitted toevenly distribute the clamping force and preventthe enclosure panel being distorted or creeping.

d. Slide a panel clamp into the two grooves at eachcorner of the indicator housing with the M3 studprotruding through the hole at the rear of theclamp. Fit the stainless steel spring washer overthe stud and secure with the stainless steel wingnut.

e. Evenly tighten the four clamps to secure theinstrument. The recommended minimumtightening torque for each wing nut is 22cNm(1.95 lbf in).

f. Connect the panel enclosure wiring to the rearterminal blocks. To simplify installation, theterminals are removable so that wiring can becompleted before the instrument is installed.Cables should be mechanically secured toensure terminals are not damaged by vibration.

g. Finally, fit a silicone rubber push-on cap to theend of each M3 threaded rod.

Support panel wiring to prevent vibration damage

Note: Optional backlight is internally powered

Fig 8 Dimensions and terminals

16

Fig 9 Installation procedure

5.3 EMCThe BA367E-SS complies with the requirements ofthe European EMC Directive 2014/30/EU. Forspecified immunity all wiring should be in screenedtwisted pairs, with the screens earthed at one pointwithin the safe area.

Fig 10 Terminals for field wiring

5.4 Counter earthingThe BA367E-SS has an M4 earth stud on the rearpanel which should be electrically connected to thepanel enclosure in which the instrument is mounted,or to the plant equipotential conductor.

5.5 Scale cardThe Counter’s units of measurement are shown on aprinted scale card in a window at the right hand sideof the display. The scale card is mounted on aflexible strip that is inserted into a slot at the rear ofthe instrument as shown in Fig 11. Thus the scalecard can easily be changed without removing theCounter from the panel or opening the instrumentenclosure.

New Counters are supplied with a printed scale cardshowing the requested units of measurement, if thisinformation is not supplied when the instrument isordered a blank card will be fitted.

A pack of self-adhesive scale cards printed withcommon units of flow measurement is available asan accessory from BEKA associates. Customprinted scale cards can also be supplied.

To change a scale card, unclip the tapered end ofthe flexible strip at the rear of the instrument bygently pushing it upwards and pulling it out of theenclosure. Peel the existing scale card from theflexible strip and replace it with a new printed card,which should be aligned as shown below. Do not fita new scale card on top of an existing card.

Install the new scale card by gently pushing theflexible strip into the slot at the rear of the Counter,when it reaches the internal end-stop secure it bypushing the end of the flexible strip downwards sothat the tapered section is held by the rear panel.

Align the self-adhesiveprinted scale card onto theflexible strip and insert thestrip into the indicator asshown below.

Fig 11 Inserting flexible strip carrying scale card intoslot at the rear of the Tachometer.

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6.0 CONFIGURATION & CALIBRATIONThe BA367E-SS Counter is configured andcalibrated via four front panel push buttons. All theconfiguration functions are contained in an easy touse intuitive menu that is shown diagrammatically inFig 13.

Each menu function is summarised in section 6.3 ofthis manual and each summary includes a referenceto more detailed information.

When factory fitted optional dual alarms, pulseoutput or a 4/20mA output are included, additionalfunctions appear in the configuration menu whichare described separately in section 9.

All new BA367E-SS Counters are suppliedcalibrated as requested at the time of ordering. Ifcalibration is not requested, Counters will havedefault configuration as shown in the following table,but can easily be re-configured on-site.

Function Display DefaultInput

Input type inP . tYPE oP . CoL

Debounce dEbounCE dEFAuLt

Counting edge Cnt EdGE EdGE 1

Update uPdAtE 0.5

Upper display di5p-1 totAL

Lower display di5P-2 on

Decimal point dP Rate 00000 . 0

Total 00000000

Total scale factor 5CALE . t 001 . 00

Rate scale factor 5CALE . r 001 . 00

Timebase t-bA5E tb-01

Filter FiLter 24

Counter direction uP or dn uP

Clear value clr val 00000000

Local clearLocal total reset Clr tot oFF

Local grand total reset Clr Gtot oFF

Security code CodE 0000

Note: While the instrument is being configuredcounting continues so that any input pulsesoccurring during this time are recorded.

6.1 Configuration structureFig 12 shows the configuration structure of theBA367E-SS Counter. The pulse input is passed tothe 5CALE.r and 5CALE.t functions allowing theindependent rate and total displays to have differentengineering units.

5CALE.t is a dividing factor that converts the inputpulses into the required total display in engineeringunits. e.g. if the input is two pulses per pump strokeand it is required to display the total number of pumpstrokes in thousands of strokes, 5CALE.t should beset to 2000.

5CALE.r is a dividing factor that converts the inputpulses into a rate display with the requiredengineering units. e.g. if the input is two pulses perpump stroke and it is required to display the pumpstroke rate, 5CALE.r should be set to 2.0.

The timebase t-bA5E is a multiplying factor thatdetermines if the instrument displays pulse rate persecond, per minute or per hour.

The BA367E-SS uses ‘real’ decimal points. Movingthe position of a decimal point in a scale factor willaffect the instrument calibration.

Fig 12 Calibration structure

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6.2 Accessing configuration functionsThroughout this manual the instrument front panelpush buttons are shown as &, *, ( and ) andlegends displayed by the instrument are shown in aseven segment font as displayed by the Countere.g. FiLtEr and 5CALE . r.

Access to the configuration menu is obtained byoperating the ( and ) push buttonssimultaneously. If the instrument is not protected bya security code the first parameter inPut will bedisplayed. If a security code other than the defaultcode 0000 has already been entered, the instrumentwill display CodE. Press ( to clear this prompt andenter the security code for the instrument using the& or * push button to adjust the flashing digit,and the ( push button to transfer control to thenext digit. If the correct code has been enteredpressing ) will cause the first parameter inPut tobe displayed. If an incorrect code is entered, or apush button is not operated within ten seconds, theinstrument will automatically return to the displaymode.

All configuration functions and prompts are shownon the upper eight digit display.

Once within the configuration menu the requiredfunction can be selected by scrolling through themenu using the & and * push buttons. Theconfiguration menu is shown diagrammatically inFig 13.

When returning to the display mode followingreconfiguration, the BA367E-SS Counter will displaydAtA followed by 5AVE while the new information isstored in permanent memory.

If after accessing the configuration menu the intervalbetween operating any front panel push buttonexceeds one minute, the BA367E-SS willautomatically return to the display mode and anyconfiguration changes will not be stored inpermanent memory. When making changes tomultiple configuration functions, it is thereforesensible to occasionally return to the display modeto save the changes that have already been made.

6.3 Summary of configuration functionsThis section summarises all the configurationfunctions. When read in conjunction with Fig 13 itprovides a quick aid for configuring the Counter. Ifmore detail is required, each section contains areference to a full description of the function.

Display Summary of function

inPut Contains sub-menu with twofunctions:

inP . tYPE Select Input typedEbounCE Set debounce

See section 6.4

inP . tYPE Configures input to accept one of sixtypes of input:

oP . CoL Open collector *VoLt5 L Voltage pulse <1 >3VVoLt5 H Voltage pulse <3 >10VCoiL Magnetic pick-offPr . dEt Proximity detector *ContACt Switch contact *

* Link terminals 3 & 4See section 6.5

dEbounCE [[

Defines level of input debounceapplied to the pulse input to preventfalse counting:

dEFAuLt

HEAVY

LiGHt

See section 6.6

Cnt EdGE Input pulse counting edgeDefines whether the Counter isincremented/decremented on theleading or trailing edge of an inputpulse. See section 6.7

updAtE Display update intervalDefines the interval between displayupdates between 0.5 and 5seconds.See section 6.8

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di5P-1 Upper displayDefines whether rAtE or totAL areshown on the upper display. Theother variable will be shown on thelower display, providing the lowerdisplay is on in function dI5P-2.See section 6.9

di5P-2 Lower displayTurns the lower display, whichnormally shows rate, on or oFF.See section 6.10

dP Position of decimal pointsDefines the position of the decimalpoint in both the total and ratedisplays.See section 6.11

5CALE . t Total Scale Factor5CALE . T is a dividing factor thatconverts the number of input pulsesinto the required total display inengineering units. 5CALE . t may beadjusted between 0.0001 & 99999.e.g. if one input pulse represents 1centimetre of dispensed cable andthe total display is required inmetres, 5CALE . t should be set to100.0 which is the number ofcentimetres in a metre.The total display is independent ofthe rate display.See section 6.12

5CALE . r Rate scale factor5CALE . r is a dividing factor thatconverts the input pulse rate into therequired rate display in engineeringunits. 5CALE . r may be adjustedbetween 0.0001 and 99999. e.g. ifone pulse represents 2 pumpstrokes and the rate display isrequired in pump strokes, 5CALE . r

should be set to 2.0.The rate display is independent ofthe total display.See section 6.13


t-bA5E TimebaseSelectable multiplier allowing rate tobe displayed in units per second, perminute or per hour.Select:

tb-01 for rate / secondtb-60 for rate / minute

tb-3600 for rate / hourSee section 6.14

FiLtEr Display filterIs an adjustable digital filter toreduce the noise on the rate display.The filter has two parameters eachrepresented by a digit adjustablebetween 0 and 9. The first digitdefines the amount of filteringapplied to the display, the seconddigit the deviation from the displayedrate at which the filter will beoverridden and the rate display willmove rapidly to the new value.See section 6.15

uP or dn Direction of countDetermines whether input pulsesincrement or decrement the totaldisplay.See section 6.16

CLr VAL Reset valueDefines a preset number to whichthe total display will be set when theBA367E-SS Counter is locally orremotely reset. Enables theinstrument to count down from apreset number. See section 6.17

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LoC CLr Local clearContains sub-menu with twofunctions enabling the total and thegrand total to be reset via the frontpanel push buttons while theCounter is in the display mode.See section 6.18

Clr tot

When on is selected total display isreset when & and * buttons areoperated simultaneously for morethan three seconds in the displaymode.See section 6.19

Clr Gtot

When on is selected the grand totalmay be reset when ) and *

buttons are operated simultaneouslyfor more than 10 seconds in thedisplay mode - see section 2.2 fordetails.Note: Once reset, the grand totalcan not be restored.See section 6.20

Clr Gtot Resets grand total to zero fromwithin configuration menu.This function resets the grand totalto zero from within the configurationmenu when CLr YE5 is selected.Note: Once reset, the grand totalcan not be recovered.See section 6.21


CodE Access codeDefines a four digit alphanumericcode that must be entered to gainaccess to the configuration menu.Default code 0000 disables thesecurity function and allowsunrestricted access to allconfiguration functions. See section 6.22

r5Et dEF Reset to factory defaultsReturns the BA367E-SS Counter tothe factory defaults shown in section6.0 To prevent accidental use therequest must be confirmed byentering 5urE before the reset willbe executed. See section 6.23

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6.4 Input: inPut

The Input function contains two sub-functionsinP . tYPE and dEbounCE that define the type of inputand the amount of input noise rejection.

6.5 Input type: inP. tYPE

inP . tYPE is a sub-menu in the inPut function whichdefines the type of input sensor or input pulse thatthe instrument will count. To check or change thetype of input, select inPut in the configuration menuand press ( which will reveal the inP. tYPE prompt,pressing ( again will show the existing Inputsetting. If set as required press ) twice to return tothe configuration menu, or repeatedly press the &or * button until the required type of input isdisplayed and then press ) twice to return to theconfiguration menu.

One of following six types of input may be selected:

Switching thresholds Low High

oP . CoL Open collector 2 2 10kΩVoLt5 L Voltage pulse low 1 1 3VVoLt5 H Voltage pulse high1 3 10VCoiL Magnetic pick-off 0 40mVPr . dEt Proximity detector 2 1.2 2.1mAContACt Switch contact 2 100 1000Ω

Notes:1. Maximum voltage input +28V.

2. For sensors connected to the input thatrequire energising i.e. proximity detectors,switch contacts or open collector sensors,terminals 3 & 4 of the BA367E-SS should belinked together.

3. To count correctly, the input pulse must fallbelow the lower switching threshold and riseabove the higher switching threshold.

4. See section 6.6 for maximum countingfrequency.

6.6 Input debounce: dEbouncE

dEbouncE is an adjustable sub-menu in the inPut

function which prevents the input miscounting whenthe input pulse has noisy edges, such as thoseresulting from a mechanical contact closing andbouncing.

Three levels of protection may be selected. Theamount of debounce applied depends upon the typeof Counter input that has been selected in theinP . tYPE function.

Select inPut in the configuration menu and press( which will reveal the inP . tYPE prompt, press the& or * button to select dEbouncE followed by (to reveal the existing setting. Pressing the & or *button will scroll through the three levels. When therequired level has been selected, pressing ) twicewill enter the selection and return the display to theconfiguration menu.

The following table shows the minimum time that theinput pulse must be continuously above the upperinput switching threshold and continuously below thelower switching threshold to ensure that the Counterprocesses the input pulse. Input switchingthresholds are shown in section 4.1.2.

debouncelevel

Min input pulse width

Type of Input

Contact All others

Default 1600µs 40µs

Heavy 3200µs 350µs

Light 400µs 5µs

The maximum counting frequency of theBA367E-SS depends upon the debounce levelselected, the shape of the input pulse and itsamplitude. The following table assumes a squarewave input and is included for guidance. Themaximum counting frequency will be lower if theinput pulses have sloping edges and the pulseamplitude only slightly exceeds the input switchingthresholds.

ONLY FOR GUIDANCE

debouncelevel

Max counting frequency

Type of input

Contact All others

Default 250Hz 12kHz

Heavy 120Hz 2kHz

Light 1000Hz 100kHz

The minimum counting frequency is 0.01Hz. Belowthis frequency the rate display is forced to zero.

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6.7 Input pulse counting edge: Cnt EdgE

This function defines whether the BA367E-SSCounter is incremented/decremented on the leadingor trailing edge of an input pulse.

To check or change the input pulse edge on whichthe count occurs select Cnt EdGE from theconfiguration menu and press ( which will revealEdGE 1 or EdGE 2. If required press the & or *button to change the setting, followed by the )

button to return to the configuration menu.

EdGE 1

Type of input Counting edgeVoltage Low to highSwitch contact Closed to openOpen collector Closed to openProximity detector High to low current

EdGE 2

Type of input Counting edgeVoltage High to lowSwitch contact Open to closedOpen collector Open to closedProximity detector Low to high current

6.8 Display update interval: uPdAtE

If either the rate or the total display is likely tochange rapidly, a longer interval between displayupdates may simplify reading. This function allowsone of six different display intervals between 0.5 and5 seconds to be selected. The selected displayupdate interval does not affect the update time ofany other instrument function.

To adjust the update interval select uPdAtE from theconfiguration menu and press ( to reveal thecurrent update interval. Pressing the & or *button will scroll through the six times. When therequired interval has been selected press ) toenter the selection and return to the configurationmenu.

6.9 Upper display: di5P-1

Usually the total count is shown on the larger uppereight digit display, but this function reverses thedisplay locations allowing rate to be shown on thelarger upper display and total on the smaller lowerdisplay.

To check the setting for the display, select dI5P-1

from the configuration menu and press ( which willreveal if the display is showing rAtE or totAL. Thesetting can be changed by pressing the & or *button followed by the ) button to enter theselection and return to the configuration menu.

6.10 Lower display: di5P-2

This function turns the lower display on or off.When turned off, the BA368E will only have oneeight digit display which may be configured in thedi5P-1 function to show the total count or rate.

To check the setting for the lower display, selectdi5P-2 from the configuration menu and press( that will reveal if the lower display is on or oFF.The setting may be changed by pressing the & or* button followed by the ) button to enter theselection and return to the configuration menu.

6.11 Position of the decimal points: dP

The upper and lower displays have eight and sixdigits respectively. This function enables theposition of the decimal point in both displays to beindependently positioned as shown below.

Upper display Total 0 0 0 . 0 . 0 . 0 . 0 . 0 1 of 5 positions or absent

Rate 0 0 . 0 . 0 . 0 . 0 1 of 4 positions or absent

Lower display Total 0 . 0 . 0 . 0 . 0 . 0 1 of 5 positions or absent

Rate 0 0 . 0 . 0 . 0 . 0 1 of 4 positions or absent

To adjust the position of the decimal points select dP

from the configuration menu and press (. Theupper display defined as the rate or total display byfunction di5P-1 (section 6.9) will be activated andidentified by the display annunciator as Rate orTotal. The decimal point, which may be positionedas shown in the table above, is moved by operatingthe & or * push button. The & button movesthe position of the decimal point to the left and the* button moves the decimal point position to theright.

When the decimal point in the upper display hasbeen positioned pressing the ( button will transfercontrol to the lower display variable, but it will beshown and annunciated on the larger upper display.The position of the decimal point may be positionedin the same way by operating the & and * pushbuttons. When both decimal points are positionedas required, enter the settings and return to theconfiguration menu by operating the ) button.

Note:Adjustment of a decimal point position willdisable the following outputs which must bere-enabled after the adjustment is complete:

Pulse output

Optional Alarm outputs.

Optional 4/20mA output.

25

6.12 Total scale factor: 5CALE . t

5CALE . t is a dividing factor adjustable between0.0001 and 99999 that enables the total to bedisplayed in engineering units. e.g. if one inputpulse represents 1 centimetre of dispensed cableand the total display is required in metres, 5CALE . t

should be set to 100.0 which is the number ofcentimetres in a metre. If a display of the totalnumber of input pulses is required, 5CALE . t shouldbe set to 1.0. The total display is independent of therate display.

To check or change the total scale factor select5CALE . t from the configuration menu and press (which will reveal the existing value with one digitflashing. The value of the flashing digit may bechanged by pressing the & or * button. Whenthis digit has been adjusted as required, pressing (will transfer control to the next digit. When all thedigits have been adjusted pressing ( will transfercontrol to the decimal point that may be positionedbetween any of the digits, or may be omitted bymoving it to the right of the least significant digit.When the total scale factor has been entered, press( to return to the 5CALE . T prompt in theconfiguration menu.

Note:Adjustment of 5cale . t will disable thefollowing outputs which must be re-enabledafter the adjustment is complete:

Optional Pulse output



6.13 Rate scale factor: 5CALE . r

5CALE . r is a dividing factor adjustable between0.0001 and 99999 that enables the rate display to bein engineering units. e.g. if one input pulserepresents 2 pump strokes and the rate display isrequired in pump strokes, 5CALE . r should be set to2.0. If just the rate of input pulses is required,5CALE . r should be set to 1.0. The rate display isindependent of the total display.

The units of the rate display are counts per unit oftime. The unit of time is the timebase of theinstrument which is determined by t-bA5E

described in section 6.14.

To check or change the rate scale factor select5CALE . r from the configuration menu and press (which will reveal the existing value with one digitflashing. The value of the flashing digit may beadjusted by pressing the & or * button.

When this digit has been adjusted as required,pressing ( will transfer control to the next digit.When all the digits have been adjusted pressing( will transfer control to the decimal point that maybe positioned between any of the digits, or may beomitted by moving it to the right of the leastsignificant digit. When the required rate scale factorhas been entered, press ) to return to the 5CALE . r

prompt in the configuration menu.

Note:Adjustment of 5cale . R will disable thefollowing outputs which must be re-enabledafter the adjustment is complete:

Optional Pulse output



6.14 Timebase: t-bA5E

The timebase multiplies the rate display by 1, 60 or3,600 depending upon whether the BA367E-SSCounter is required to display rate per second, perminute or per hour. See Fig 12.

To check or change the timebase, select t-bA5E

from the configuration menu and press ( which willreveal the current setting. Pressing the & or *button will scroll through the three options:

tb-1 for pulses / secondtb-60 for pulses / minute

tb-3600 for pulses / hour

When the required multiplier is displayed press )to return to the t-bA5E prompt in the configurationmenu.

6.15 Display filter: FiLtEr

The digital display filter has two independentadjustable parameters enabling the rate displayresponse to be tailored for optimum performance.The filter parameters are controlled by a two digitnumber. The first digit defines the amount of filteringapplied to the display as shown below.

First digit Filter time constantSeconds

0X 01X 1.32X 4.33X 6.54X 8.75X 11.36X 15.77X 20.98X 25.29X 31.5

26

The second digit defines the deviation from thedisplayed rate at which the filter will be overriddenand the rate display will move rapidly to the newvalue.

Seconddigit

Magnitude of stepchange which willproduce a rapid

response

X0 OffX1 1%X2 2%X3 4%X4 8%X5 12%X6 16%X7 24%X8 32%X9 64%

By careful adjustment of the two parameters a stabledisplay with an acceptable input step response canbe obtained for most applications.

During commissioning it is recommend that initiallythe second digit is set to 0 (off) and the first digit isadjusted to provide acceptable rate display stability.The second digit should then be increased until theselected step size is greater than the noise on thedisplay signal, at which setting the rate display willbecome stable. These will be the optimum filterparameters for acceptable rate display stability and afast response to a large rate signal change.

To check or change the filter select FiLtEr in theconfiguration menu and press ( which will revealthe current settings with the first digit flashing.Pressing the & or * button will adjust the flashingdigit and ( will transfer control to the second digit.While making adjustments the filtered rate display isshown on the lower display so that stability can beassessed while adjustments are being made. Whenset as required, press the ) button to enter therevised parameters and return to the FiLtEr promptin the configuration menu.

6.16 Direction of count: uP or dn

This function defines whether input pulses incrementor decrement the total display. i.e. whether theBA367E-SS is an up-counter or a down-counter.

When configured as a down-counter with a non-zeronumber entered for the reset value CLr VAL, theBA367E-SS will count down from the reset value tozero.

To check or change the count direction selectuP or dn from the configuration menu and press( which will reveal the present setting. uP

indicates that the instrument is an up-counter and dn

that it is a down counter. Pressing the & or *buttons will toggle the instrument between the twosettings. When set as required, press the ) buttonto enter the setting and return to the configurationmenu.

6.17 Reset value: CLr VAL

This function defines the value to which the totaldisplay is reset when the local or remote reset areoperated. This allows the BA367E-SS to be used asa preset down-counter.

When the instrument is used as an up-counter, CLr

VAL is normally set to zero.

To check or change the reset value select CLr VAL

from the configuration menu and press ( which willreveal the current setting with one digit flashing. Theflashing digit may be adjusted by pressing the & or* button. When this digit is correct, pressing( will transfer control to the next digit.

When all the digits have been adjusted press the )button to enter the revised number and return to theconfiguration menu.

6.18 Local reset: LoC CLr

The Local reset function contains two sub-functionsClr tot and Clr Gtot which when enabled allow thetotal display and grand total to be reset via theinstrument front panel push buttons while theBA367E-SS Counter is in the display mode.

27

6.19 Local total reset: Clr tot

Clr tot is a sub-menu in the LoC CLr function. Whenactivated it allows an operator to reset the totaldisplay to the reset value [see section 6.17] whilethe BA367E-SS Counter is in the display mode byoperating the & and * push buttonssimultaneously for more than three seconds.

To check or change the setting select LoC CLr in theconfiguration menu and press ( which will revealthe Clr tot prompt, operating ( again will show ifthe local total reset is on or oFF. If set as requiredoperate the ) button twice to return to theconfiguration menu, or the & or * button tochange the setting followed by the ) button twiceto enter the change and return to the LoC CLr promptin the configuration menu.

Note:The total display may also be remotely resetto the reset value by connecting terminalsRS1 and RS2 together for more than onesecond. See sections 3.6; 4.1.8 and 4.2.8 ofthis manual.

6.20 Local grand total reset: Clr Gtot

The grand total is a separate sixteen digit counterwhich is incremented or decremented in parallel withthe total display, but is not reset when the totaldisplay is reset. The grand total may be viewed inthe display mode in two eight digit sections asdescribed in section 2.2 of this manual.

Clr Gtot is a sub-menu in the LoC CLr functionwhich when activated allows the operator to resetthe grand total display to zero from the display modeby operating the ) and * push buttonssimultaneously for more than ten seconds.

To check or change setting select LoC CLr in theconfiguration menu and press ( which will revealClr tot. Using the & or * button select Clr Gtot

and press ( which will show if local grand totalreset is on or oFF. If set as required operate the )button twice to return to the configuration menu, orthe & or * button to change the setting followedby the ) button twice to enter the change andreturn to the LoC CLr prompt in the configurationmenu.

Note: Once reset, the grand total can not berecovered.

6.21 Reset grand total from configuration menu: Clr Gtot

The grand total is a separate sixteen digit counterwhich is incremented or decremented in parallel withthe total display, but is not reset when the totaldisplay is reset. The grand total may be viewed inthe display mode in two eight digit sections asdescribed in section 2.2 of this manual.

To zero the grand total from within the configurationmenu select CLr Gtot and press ( which will causethe instrument to display Clr . no with no flashing.Using the & or * push button change Clr no toclr ye5, pressing ( will result in the instrumentdisplaying 0000 with the first digit flashing. This is arequest to confirm the reset instruction by entering5urE. Using the & or * button set the firstflashing digit to 5 and press ( to transfer control tothe second digit which should be set to u. When5urE has been entered pressing the ) button willreset the grand total which will be confirmed by abrief display of Gt Clrd, the instrument willautomatically return to the Clr Gt prompt in theconfiguration menu.

Note: Once reset, the grand total can not berecovered.

6.22 Security code: CodE

Access to the instrument configuration menu may beprotected by a four digit security code which must beentered to gain access. New instruments areconfigured with the default security code 0000 whichallows unrestricted access to all configurationfunctions.

To enter a new security code select CodE from theconfiguration menu and press ( which will causethe BA367E-SS Counter to display 0000 with onedigit flashing. The flashing digit may be adjustedusing the & and * push buttons, when set asrequired operating the ( button will transfer controlto the next digit. When all the digits have beenadjusted press ) to return to the CodE prompt. Therevised security code will be activated when theBA368E Counter is returned to the display mode.

Please contact BEKA associates sales department ifthe security code is lost.

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6.23 Reset configuration to factory defaults: r5Et dEF

This function returns the BA367E-SS Counter to thefactory defaults shown in section 6.0. To preventaccidental use the request must be confirmed byentering 5urE before the configuration change will beexecuted.

Select r5Et dEF from the configuration menu andpress ( the instrument will display 0000 with thefirst digit flashing. To confirm the instruction to resetall the configuration functions to factory defaults5urE must be entered. Using the & or * buttonset the first flashing digit to 5 and press ( totransfer control to the second digit which should beset to u. When 5urE has been entered pressing the) button will reset all the configuration functions tothe factory default settings and zero both the totaldisplay and the grand total. While resetting theBA367E-SS Counter will display - - - - - - - -

before automatically returning to the display modewhen the operation is complete.

6.24 Display overflowThe BA367E-SS Counter total has a maximumdisplay range of -9999999 to 99999999 when shownon the eight digit upper display. If this range isexceeded the display will be as shown below with allof the decimal points flashing:

Underrange -9 . 9 . 9 . 9 . 9 . 9 . 9

Overrange 9 . 9 . 9 . 9 . 9 . 9 . 9 . 9

When the total is shown on the lower six digit displaythe maximum display range is -99999 to 999999.

When a total overflow occurs the actual total may beobtained from the instrument's grand total displaywhich has sixteen digit - see 2.3.

To prevent future total display overflows occurringthe total scale factor 5CALE . t and the position of thedecimal point in the total display dP should bereviewed.

7. CONFIGURATION EXAMPLEA BA367E-SS Counter is required to display the totalnumber of strokes that a reciprocating pump makesin thousands of strokes on the larger upper displayand to show the speed of pumping in strokes perhour on the lower display. The stroke sensor is aproximity detector which produces four pulses perstroke. The total display is only to be resettable byan external contact, not from the BA367E-SSCounter front panel. Similarly the grand total is notto be resettable from the BA367E-SS Counter frontpanel. To simplify reading the BA367E-SS display isto be updated every 3 seconds and to preventtampering the instrument configuration menu is to beprotected by security code 1209.

The BA367E-SS may be configured on-site withoutdisconnection from the power supply or from theproximity detector. This example assumes that theBA367E-SS initially has default factory configuration.

If after accessing the configuration menu the intervalbetween operating any front panel push buttonexceeds one minute the BA367E-SS willautomatically return to the display mode and anyconfiguration changes will not be stored inpermanent memory. When making multiplechanges it is therefore sensible to occasionallyreturn to the display mode to save the changes thathave already been made.

Step 1 Enter the configuration menuPut the BA367E-SS Counter in theconfiguration mode by simultaneouslypressing the ( and ) push buttons.Assuming a security code has notalready been entered the instrument willrespond by displaying inPut which is thefirst parameter in the configuration menu.See Fig 13.

Step 2 Select the type of inputsWith InPut displayed; press ( to revealthe inPut . tYPE submenu and press( again to enter the function. Using the& or * button select Pr.dEt, the inputfor a 2-wire proximity detector and thenreturn to the inPut prompt in theconfiguration menu by pressing )twice. A proximity detector requiresenergising therefore terminals 3 and 4 ofthe BA367E-SS should be linkedtogether.

29

Step 3 Select display updateTo aid reading the display theBA367E-SS is only to be updated every3 seconds. Select uPdAtE from the configurationmenu and press (. Using the & or *button select 3 and press ) to return tothe uPdAtE prompt in the configurationmenu.

Step 4 Define function of upper displayIn the example the total number ofstrokes is required on the larger eightdigit upper display. Select dI5P-1 from the configurationmenu and press ( which will reveal ifthe upper display is showing rAtE ortotAL. Using the & or * button selecttotAL followed by the ) button to enterthe selection and return to theconfiguration menu.

Step 5 Activate lower rate displayA rate display is required so the lowerdisplay must be activated. Select di5PLAY . 2 from the main menuand press ( to show the existingsetting. Using the & or * buttonselect on followed by ) to enter theselection and return to the configurationmenu.

Step 6 Position of decimal pointIn this example the BA367E-SS isrequired to display total and rate with nodecimal points.

Select d.P. from the configuration menuand press (. The BA367E-SS willshow and identify the total display with allthe digits activated. Using the & or *button position the decimal point to theright of the least significant digit i.e. notvisible. Operating the ( button will show andidentify the rate display with all the digitsactivated, Again using the & or *button position the decimal point to theright of the least significant digit i.e. notvisible. Finally press ) to return to theconfiguration menu.

Step 7 Enter the total scale factorIn this example the proximity detectorproduce four pulses per pump stroke.The BA367E-SS is required to displaythousands of pump strokes therefore thetotal scale factor 5CALE.t should be set to(4 x 1000) = 4000.

Select 5CALE.t from the configurationmenu and press ( to view the currentvalue with one digit flashing. Use the& or * button to adjust the flashingdigit and the ( button to transfer controlto the next digit and to the decimal point.Enter 4000.0 and return to the 5CALE.t

prompt in the configuration menu bypressing ).

Step 8 Enter the rate scale factorThe proximity detector produces fourpulses per pump stroke and the ratedisplay is required in strokes per hour,therefore the rate scale factor 5CALE.r

should be set to 4.0.

Select 5CALE.r from the configurationmenu and press ( to view the currentvalue with one digit flashing. Use the &or * button to adjust the flashing digitand the ( button to transfer control tothe next digit and to the decimal point.Enter 4.0 and return to the 5CALE.r promptin the configuration menu by pressing).

Step 9 Set the display timebase In this example the rate display isrequired in pump strokes per hour.Select t-bA5E from the configurationmenu and press ( to reveal the currentsetting. Using the & or * button scrollthrough the three options and selecttb-3600. Return to the t-bASE prompt inthe configuration menu by pressing ).

Step 10 Adjust the rate display filter The rate display filter parameters shouldbe adjusted experimentally afterinstallation to provide a stable ratedisplay with an acceptable stepresponse.

During commissioning it is recommendthat initially the second digit of the rateparameters is set to 0 (step response off)and the first digit (amount of filtering) isadjusted to provide acceptable ratedisplay stability.

30

The second digit should then beincreased until acceptable rate displaystability is once again achieved.To adjust the filter parameters selectFiLtEr from the main menu and press( to reveal the current setting. The firstdigit will be flashing and may be adjustedusing the & or * button. The (button will transfer control to the seconddigit. When both are set as required,return to the FiLtEr prompt in theconfiguration menu by pressing ).

Note: While adjusting the filter, the rate isshown on the lower display so thatstability can be assessed.

Step 11 Define the security codeDefining an access security codeprevents unauthorised access to theconfiguration menu. Select CodE in theconfiguration menu and press ( whichwill reveal the existing security code withthe first digit flashing. Enter the newcode 1209 using the & or * button toadjust the flashing digit and the( button to transfer control to the nextdigit. When the new code has beenentered, press ) to return to theconfiguration menu.

Step 12 Return to the display modeFollowing completion of configuration,return the BA367E-SS to the displaymode by pressing ). The instrumentwill display dAtA followed by 5AVE whilethe configuration changes are stored inpermanent memory.

The BA367E-SS was assumed to initially havefactory default configuration, therefore the countingedge, counting direction, local total and local grandtotal resets were not reconfigured as they alreadycomplied with the requirements for this example.

During commissioning the debounce and filterfunctions may need adjustment to obtain a stabledisplay.

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8. MAINTENANCE

8.1 Fault finding during commissioningIf a BA367E-SS Counter fails to function duringcommissioning the following procedure should befollowed:

Symptom Cause Check:No display No power supply,

or incorrectwiring.

Note: Terminals 2,6 & RS2 are

interconnectedwithin the

instrument.

That there isbetween 10 and

28V on terminals1 & 2 withterminal 1positive.

Counter isreceiving powerbut pulse inputindicator not

rotating.No input pulses,incorrect inputconfiguration,

incorrect linking ofterminals 3 & 4.

Inputconfiguration.

Linking ofterminals 3 & 4.

That input signalpolarity is correct.

Pulse inputindicator rotatingbut incorrect rate

display.

Incorrect ratedisplay calibration 5CALE.r

t-bA5E

Pulse indicatorindicator rotatingbut incorrect total

display.

Incorrect totaldisplay

calibration.

Remote resetswitch contacts

closed.

5CALE.t

That RE5ET

annunciator is notactivated. If it is,check reset wiring

and switch.

Unstable ratedisplay

Noisy pulse inputsignal

Eliminate sourceof electrical noise.

Increasedebounce and/or

display filter.Unable to enter

configurationmenu.

Incorrect securitycode

That the correctsecurity code is

being used.

Contact BEKA ifcode is lost.

Optional 4/20mAor pulse outputdo not function

Output has beendisabled following

configurationchange

Re-enable output

Optional alarmsdo not function

Alarms have beendisabled following

configurationchange.

Re-enable bothalarms.

8.2 Fault finding after commissioning

ENSURE PLANT SAFETY BEFORESTARTING MAINTENANCE

Live maintenance is permitted onintrinsically safe equipment installed in ahazardous area, but only certified testequipment should be used unless a gasclearance certificate is available.

If a BA367E-SS Counter fails after it has beenfunctioning correctly, the following table may help toidentify the cause of the failure.

Symptom Cause Check:No display No power supply. That there is

between 10 and28V on terminals

1 & 2 withterminal 1 positive

Pulse inputindicator not

rotating.

No input pulses Output fromsensor.

Wiring betweensensor andBA367E-SS

Counter.Unstable rate

displayNoisy pulse input

signalLocate source of

electrical noise, orincrease

debounce andrate display filter.

If this procedure does not reveal the cause of thefault, it is recommended that the instrument isreplaced.

8.3 ServicingWe recommend that faulty BA367E-SS Counters arereturned to BEKA associates or to our local agent forrepair.

8.4 Routine maintenanceThe mechanical and electrical condition of theinstrument should be regularly checked. Inspectionfrequency should be adjusted to suit theenvironmental conditions.

8.5 GuaranteeInstruments which fail within the guarantee periodshould be returned to BEKA associates or our localagent. It is helpful if a brief description of the faultsymptoms is provided.

8.6 Customer commentsBEKA associates is always pleased to receivecomments from customers about our products andservices. All communications are acknowledged andwhenever possible, suggestions are implemented.

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9. ACCESSORIESAccessories for the BA367E-SS Counter are shownbelow, all except the scale card are factory fitted andshould be specified when the instrument is ordered:

Scale card

Tag number

Backlight 1

Isolated pulse output 2

orIsolated 4/20mA output 2

orIsolated dual alarms 2

Notes:1. Internally powered

2. Only one of the three output options canbe fitted to a BA367E-SS.

9.1 Scale cardThe BA367E-SS has a window on the right handside of the display through which to view a scalecard showing the units of measurement such asStrokes or Metres. New Counters are fitted with ascale card showing the units of measurementspecified when the instrument was ordered, if theunits are not specified a blank scale card will befitted. A pack of scale cards pre-printed withcommon units of measurement is available as anaccessory. These can easily be fitted on-site to theCounter without opening the instrument enclosure orremoving it from the panel, See section 5.5 of thisinstruction manual.

Custom scale cards for applications requiring lesscommon units of measurement are also available.

9.2 Tag informationA tag number or application information can the laseretched onto the rear panel adjacent to the terminals.This information is not visible from the front of theinstrument after installation.

9.3 AlarmsOnly one of the following accessories may befitted: dual alarms, pulse output or 4/20mAoutput.

The BA367E-SS Counter can be supplied withfactory fitted dual solid state single pole alarmoutputs that may be independently configured ashigh or low, rate or total alarms with normally openor normally closed outputs.

Configurable functions for each alarm includeadjustable setpoint, alarm delay time and alarmsilence time. Hysteresis may be applied to ratealarms.

WARNING

Alarm outputs should not be used forcritical safety applications such as a shutdown system.

When the BA367E-SS power supply is turned off ordisconnected, alarm outputs will open irrespective ofwhether normally open or normally closed outputshave been selected. When designing a system anopen output should therefore be chosen for thealarm condition.

Alarm annunciators on the instrument displayindicate the status of each alarm. If an alarm delayor silence time has been selected the annunciatorwill flash during the delay or silence period.

The BA367E-SS internal counters are up-dated andcompared with the alarm setpoint twice per second,irrespective of the display update time selected.This may result in an alarm being delayed for up tohalf a second after the rate or total has exceeded thesetpoint.

9.3.1 Solid state output Each alarm has a galvanically isolated single polesolid state switch output as shown in Fig 14. Theoutputs are polarised and current will only flow inone direction. Terminals A1 and A3 should beconnected to the positive side of the supply.

Ron = less than 5 + 0.7VRoff = greater than 1M

Note: Because of the series protection diode sometest meters may not detect a closed alarmoutput

Fig 14 Equivalent circuit of each alarm output

9.3.2 Intrinsic safetyEach alarm output is a separate galvanically isolatedintrinsically safe circuit with output safety parameterscomplying with the requirements for simpleapparatus. This allows the alarm output terminalsA1 & A2 and A3 & A4 to be connected to almost anyintrinsically safe circuit protected by a Zener barrieror galvanic isolator providing the output parametersof the circuit do not exceed:

Uo = 28V dcIo = 200mAPo = 0.84W

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The maximum equivalent capacitance andinductance between each set of alarm terminals is:

Ci = 22nFLi = 8µH (Effectively 0)

To determine the maximum permissible cablecapacitance Ci should be subtracted from themaximum permitted external capacitance Cospecified by the certificate for the intrinsically safeinterface powering the alarm circuit, such as thesolenoid driver and switch transfer galvanic isolatorsshown in Fig 15.

Fig 15 Typical alarm application

9.3.3 Configuration summaryWhen a BA367E-SS Counter is supplied with alarmsthe configuration menu is extended as shown inFig 16. Each alarm may be configured to operateon the rate or total display.

For simplicity Fig 16 only shows the configurablefunctions on the rate option of alarm AL1, the totaloptions is identical except that the total alarms cannot have hysteresis. Configuration of alarm AL2 isidentical to alarm AL1.

The following table summarises each of the alarmconfiguration functions and includes a crossreference to more detailed information. Again onlythe functions on alarm AL1 are listed.


EnbL Alarm enableEnables or disables the alarm withoutchanging the alarm parameters.See section 9.3.4

tYPE Type of alarmDefines whether the alarm operates onthe rate or total display.See section 9.3.5

5P1r Alarm setpoint 1 or Adjusts the alarm setpoint. The5P1t alarm is activated when the rate or

total display equals the setpoint.Note: 5P1r is displayed for a rate alarmand 5P1t for a total alarm.See section 9.3.6

HI. LO Alarm functionDefines whether the alarm has a high orlow function.See section 9.3.7

no . nc Normally open or normally closedoutput.Determines whether the single polealarm output is open or closed in thenon-alarm condition.See section 9.3.8

H5tr HysteresisAdjusts the alarm hysteresis. Onlyavailable on a rate alarm.See section 9.3.9

dELA Alarm delay timeAdjusts the delay between the displayequalling the alarm setpoint and thealarm output being activated. See section 9.3.10

5IL Alarm silence timeDefines the time that the alarm outputremains in the non-alarm conditionfollowing acceptance of an alarm.See section 9.3.11

FL5H Flash display when alarm occursWhen enabled, alternates the rate ortotal display between process value andalarm reference AL1 or AL2 when analarm output is activated.See section 9.3.12

AC5P Access setpointSub-menu that enables direct access tothe alarm setpoints from the displaymode and defines a separate securitycode.See section 9.3.13

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9.3.4 Alarm enable: EnbL

This function allows the alarm to be enabled ordisabled without altering any of the alarmparameters. Using the & or * push button selectAL1 or AL2 from the configuration menu and press( to reach EnbL in the alarm sub-menu. Pressing( will then reveal the existing setting. The functioncan be changed by pressing the & or * pushbutton followed by the ) button to return to thealarm sub-menu.

9.3.5 Type of alarm: tYPE

Alarm 1 and Alarm 2 are totally independent, bothmay be rate or total alarms, or one may beconditioned for rate and the other for total.Using the & or * push button select tYPE from theselected alarm sub-menu and press ( to check orchange the function. The & or * push button willtoggle the selection between rAtE and totAL, whenset as required press the ) button to return to thealarm sub-menu.

Note: When tYPE is changed, the alarmconfiguration is automatically reset to thedefault values and the alarm is disabled. Itmust therefore be reconfigured before use.

35

9.3.6 Setpoint adjustment: 5P1x & 5P2xThe rate alarm setpoints 5P1r and 5P2r may bepositioned anywhere between -99999 and 999999,and the total alarm setpoint 5P1t and 5P2t anywherebetween -9999999 and 99999999.

All the setpoints are adjusted in the same way, forexample, to adjust the setpoint of Alarm 1 which hasbeen configured to operate on the rate display.Using the & or * push button select 5P1r in theAL1 sub-menu and press ( which will reveal theexisting setpoint with one digit flashing. Therequired setpoint can be entered using the & or *push button to adjust the flashing digit and the( button to transfer control to the next digit. Whenset as required press ) to enter the value andreturn to the 5P1r prompt in the alarm 1 sub-menu.

9.3.7 Alarm function: Hi. Lo

Alarm 1 and Alarm 2 are totally independent, bothmay be Hi or Lo, or one may be conditioned as a Hialarm and the other as a Lo alarm. Using the & or * push button select Hi. Lo fromthe selected alarm sub-menu and press ( to checkor change the function. The & or * push buttonwill toggle the alarm function between Hi and Lo,when set as required, press the ) button to returnto the Hi. Lo prompt in the alarm sub-menu.

9.3.8 Alarm output status: no . nC

Each single pole alarm output may be open orclosed in the non-alarm condition. When theBA367E-SS power supply is turned off ordisconnected, the alarm output(s) will openirrespective of whether normally open or normallyclosed outputs have been selected. Therefore,when designing an alarm system normally closed nc

should be selected so that the output opens when analarm occurs or if the power supply fails.

Using the & or * push button select no . nC fromthe selected alarm sub-menu and press ( to checkor change the function. The & or * push buttonwill toggle the contact status between no and nC,when set as required, press the ) button to returnto the no . nC prompt in the alarm sub-menu

9.3.9 Hysteresis: H5tr

Hysteresis is only available on rate alarms so theH5tr function only appears in the configuration sub-menu when alarm tYPE has been set to rAtE. Duringconfiguration hysteresis is shown in the units of ratepreviously configured for the rate display.

Using the & or * push button select H5tr in theselected alarm sub-menu and press ( which willreveal the existing hysteresis with one digit flashing.

The required hysteresis can be entered using the &or * push button to adjust the flashing digit and the( button to transfer control to the next digit. Whenset as required press ) to enter the value andreturn to the H5tr prompt in the alarm sub-menu.

e.g. A BA367E-SS Counter configured to display arate of 0 to 5000, with a high alarm set at 4000 andhysteresis of 100 will perform as follows:

High alarm will be activated when rateequals or exceeds 4000, but will not resetuntil the rate falls below 3900.

9.3.10 Alarm delay: dELA

This function enables activation of the alarm outputto be delayed for a fixed time following the alarmcondition occurring. The delay can be set in 1second increments up to 3600 seconds. If a delay isnot required zero should be entered.

To adjust the delay select dELA using the & or *push button in the selected alarm sub-menu andpress ( which will reveal the existing delay time inseconds with one digit flashing. The required delaytime can be entered using the & or * push buttonto adjust the flashing digit and the ( button totransfer control to the next digit. When set asrequired press ) to enter the value and return tothe dELA prompt in the alarm sub-menu.

The alarm annunciator will start flashing immediatelyan alarm occurs and will continue for the delay time,after which the alarm output will be activated and thealarm annunciator will be permanently activated.

9.3.11 Alarm silence time: 5IL

The alarm silence function is primarily intended foruse in small installations where the alarm outputdirectly operates an annunciator such as a sounder.When the alarm silence time is set to any figureother than zero, the ( push-button becomes analarm accept button.

After an alarm has occurred, operating the( button will cause the alarm output to revert to thenon-alarm condition for the alarm silence time.When an alarm is silenced the alarm annunciator willflash until the silence time expires.

To adjust the alarm silence time select 5iL using the& or * push button in the selected alarm sub-menu and press ( which will reveal the existingalarm silence time in seconds with one digit flashing.The required silence time can be entered using the& or * push button to adjust the flashing digit andthe ( button to transfer control to the next digit.When set as required press ) to enter the valueand return to the 5iL prompt in the alarm sub-menu.

36

9.3.12 Flash display when alarm occurs: FL5H

In addition to the two alarm annunciators on the lefthand side of the BA367E-SS Counter display whichshow the status of both alarms, this functionprovides an even more conspicuous indication thatan alarm condition has occurred.

When enabled, this function alternates the rate ortotal display between the numerical value and thealarm identification AL1 or AL2 when an alarmoccurs.

Using the & or * push button select FL5H from theselected alarm sub-menu and press ( to check orchange the function. The & or * push button willtoggle the function between oFF and on, when set asrequired, press the ) button to return to the FL5H

prompt in the alarm sub-menu.

9.3.13 Access Setpoint: AC5P

This function activates a separate menu thatprovides direct access to the alarm setpoints fromthe display mode by simultaneously operating the( and * buttons. An operator can thereforeadjust the alarm setpoints without having access tothe configuration and alarm sub-menus. Protectionagainst unauthorised or accidental adjustment isprovided by a separate security access code.

Using the & or * push button select AC5P from theconfiguration menu and press ( to reach theenable function EnbL. Pressing ( will reveal theexisting setting which can be toggled between on

and oFF by pressing the & or * push button.When set as required, press the ) button to returnto the EnbL prompt from which a separate securityaccess code can be entered using the ACCd functionwhich can be selected using the & or * pushbutton.

To enter a new security code select ACCd from thesub-menu and press ( which will cause theBA367E-SS Counter to display 0000 with one digitflashing. The flashing digit may be adjusted usingthe & and * push buttons, when set as requiredoperating the ( button will transfer control to thenext digit. When all the digits have been adjustedpress ) to return to the ACCd prompt. The revisedsecurity code will be activated when the BA367E-SSCounter is returned to the display mode. Defaultsecurity access code 0000 will disable the securitycode allowing direct access to the setpoints in thedisplay mode by pressing the ( and * buttonssimultaneously.

Please contact BEKA associates sales department ifthe security code is lost.

9.3.14 Adjusting alarm setpoints from the display modeAccess to the two alarm setpoints from theBA367E-SS Counter’s display mode is obtained byoperating the ( and * push buttonssimultaneously as shown in Fig 17. If the setpointsare not protected by a security code the alarmsetpoint prompt 5P1r or 5P1t will be displayeddepending upon whether a rate or total alarm hasbeen configured. If the setpoints are protected by asecurity code, CodE will be displayed first. Pressing( again will allow the alarm setpoint security codeto be entered digit by digit using the & or * buttonto adjust the flashing digit and the ( push button tomove control to the next digit. If the correct code isentered pressing ) will then cause alarm setpointprompt 5P1x to be displayed. If an incorrect securitycode is entered, or a button is not pressed within tenseconds, the instrument will automatically return tothe display mode.

Once within the menu pressing the & or * buttonswill toggle the display between the two alarmsetpoint prompts 5P1x and 5P2x.

Fig 17 Setpoint adjustment from the display mode

37

To adjust an alarm setpoint select 5P1x or 5P 2x andpress ( which will reveal the current setting. Theflashing digit of the setpoint may be adjusted usingthe & and * push buttons and the ( button tomove control to the next digit. When the requiredsetpoint has been entered, pressing ) will returnthe display to the 5P1x or 5P 2x prompt from whichthe other setpoint may be selected, or the instrumentmay be returned to the display mode by pressing )again.

Note: Direct access to the alarm setpoints fromthe display mode is only available whenthe AC5P menu is enabled - see section9.3.13

9.4 Pulse output

Only one of the following accessories may befitted: dual alarms, pulse output or 4/20mAoutput.

The BA367E-SS Counter can be supplied with afactory fitted opto-isolated solid state pulse output.The output is an open collector having the followingelectrical parameters:

Ron = 60 + 3VRoff = 1MImax = 10mA

The output pulse may be a duplicate of the inputpulse for re-transmission applications, or it may bederived from the total display. When derived fromthe total display the output pulse frequency may bedivided and the output pulse width defined.

The retransmitted RTx annunciator on theinstrument display shows the status of theretransmitted pulse output. Annunciator activationdepends upon the setting of 5ource in the pulseoutput configuration menu.

5caled:

Annunciator activated each time pulse outputopen collector is on, i.e. Ron is less than60Ω + 3V.

direct:

Annunciator continuously activated

9.4.1 Intrinsic safetyThe pulse output is an optically isolated separateintrinsically safe circuit that has zero output safetyparameters. The output therefore complies with therequirements for simple apparatus. This allowspulse output terminals P1 and P2 to be directlyconnected to any intrinsically safe circuit protectedby a certified Zener barrier or galvanic isolatorproviding the output parameters do not exceed:


The equivalent capacitance and inductance of thepulse output are both zero which allows themaximum permissible cable parameters specified bythe certificate for the Zener barrier or galvanicisolator powering the pulse output circuit to be used.

9.4.2 System designThe BA367E-SS Counter pulse output is a passivecircuit i.e. not powered, but it is totally isolated fromall other Counter circuits. Subject to complying withintrinsic safety interconnection requirements, theterminals P1 and P2 may be connected to anotherinstrument with a open collector input. The pulseoutput may also be transferred to the safe area via agalvanic isolator or a Zener barrier.

Fig 18 shows how Zener barriers may be used toproduce a voltage pulse in the safe area that couldbe used to drive a safe area counter. The positiveterminal of the pulse output circuit P1 is connectedto the BA367E-SS Counter’s positive supply terminal1 at the instrument. When an output pulse occursand the open collector output 'closes', P2 isconnected to P1 and a pulse current flows throughthe diode return barrier and R1 in the safe area. Thecurrent flowing in the circuit is determined by resistorR1 which should be chosen to limit the pulse outputcurrent to less than 10mA. For a 24V supply R1should be greater than 2,200Ω.

38

Fig 18 Transferring pulse output to safe area usingZener barriers

9.4.3 ConfigurationWhen a BA367E-SS Counter is supplied with anoptional pulse output the configuration menu isextended as shown in Fig 19.

The pulse output sub-menu allows the source of theoutput pulse to be selected in the 5ourCE sub-function. For re-transmission applications the outputpulse may be a synchronous duplicate of the inputpulse by selecting dirECt in the 5ourCE sub-function.

Selecting 5CALEd derives the output pulse from thetotal display and introduces two additional functions,diVidE and durAtion to the sub-menu allowing theoutput pulse frequency to be divided and the outputpulse width (duration) to be defined. The totaldisplay is read every half second and any increasesince the last reading copied into the pulse outputcounter. After dividing by the diVidE function,pulses of width defined by the durAtion function areasynchronously output from this counter as quicklyas possible.

If the diVidE and durAtion functions are configuredsuch that the output pulse frequency with thespecified pulse width can not be output in real time,the number of pulses will be stored and transmittedat the maximum possible speed.When the total display is reset to zero or the powersupply to the BA367E-SS Counter is disconnectedor turned off, any stored pulses will not be retained

9.4.4 Access Pulse output sub-menu: PuL5E oP

Access to the BA367E-SS Counter configurationmenu as described in section 6.2. Using the & and* push buttons scroll though the menu until PuL5E .

oP is displayed, pressing ( will then access thepulse output sub-menu which is shown in Fig 19.

Fig 19 Pulse output configuration sub-menu

9.4.5 Enable pulse output: EnbL

This function allows the pulse output to be disabledor enabled without altering any of the pulse outputparameters. Using the & or * push button selectEnbL in the pulse output sub-menu and press (. toreveal the existing setting on or oFF. The functioncan be changed by pressing the & or * pushbutton followed by the ) button to return to EnbL

prompt.

39

9.4.6 Source of pulse output: 5ourCE

The output pulse may be derived from:

dirECt Output is a duplicate of the inputpulse.

5CALEd Output is derived from the totaldisplay. When 5CALEd isselected two additional functions,diVidE and durArion, appear inthe pulse output sub-menu.

Using the & or * push button select 5ourCE in thepulse output sub-menu and press (. to reveal theexisting pulse source. The function can be changedby pressing the & or * push button followed bythe ) button to return to 5ourCE prompt.

9.4.7 Divide output pulse frequency: diVidE

When the output pulse is derived from the totaldisplay the output pulse frequency may be dividedby:

1

10

100

1000

10000

Using the & or * push button select diVidE in thepulse output sub-menu and press ( to reveal theexisting divisor. The value can be changed bypressing the & or * push button to select therequired value followed by the ) button to return todiVidE prompt.

Note: This function only appears in the sub-menuwhen the output pulse is derived from thethe total display.

9.4.8 Output pulse width: durAtion

When the output pulse is derived from the totaldisplay, the pulse width is defined by this function.One of 11 pulse widths may be selected inmilliseconds:

0.1

0.5

1

2.5

5

10

25

50

100

250

500

Using the & or * push button select durAtion inthe pulse output sub-menu and press ( to revealthe existing pulse duration. The value can bechanged by pressing the & or * push button toselect the required value followed by the ) buttonto return to durAtion prompt.

Note: This function only appears in the pulseoutput sub-menu when the output pulse isderived from the total display.

9.5 4/20mA output

Only one of the following accessories may befitted: dual alarms, pulse output or 4/20mAoutput.

The BA367E-SS Counter can be supplied with afactory fitted galvanically isolated 4/20mA currentsink which may be configured to represent the rateor total display.

9.5.1 Intrinsic safetyThe 4/20mA output has been certified as a separategalvanically isolated intrinsically safe circuitcomplying with the requirements for simpleapparatus. This allows terminals C1 and C3 to beconnected to any intrinsically safe circuit protectedby a certified Zener barrier or galvanic isolatorproviding the output parameters do not exceed:


The maximum equivalent capacitance andinductance of the 4/20mA output is:

Ci = 13nFLi = 4µH

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To determine the maximum permissible cableparameters, these figures should be subtracted fromthe maximum cable capacitance and inductancespecified by the certificate for the Zener barrier orgalvanic isolator powering the 4/20mA output circuit.

9.5.2 System designThe optional 4/20mA output is a passive current sinki.e. not powered, but it is totally isolated from allother Counter circuits. It is effectively a 2-wire4/20mA transmitter requiring a minimum supply of10V with the current being controlled by theBA367E-SS rate or total display. Subject tocomplying with intrinsic safety interconnectionrequirements, terminals C1 and C3 may be directlyconnected to another instrument located in the samehazardous area which will accept a 4/20mA looppowered transmitter input. The 4/20mA current maybe transferred to the safe area via a galvanic isolatoror Zener barriers.

Fig 20 shows how a 2-channel Zener barrier may beused to power the 4/20mA current output from thesafe area, alternatively a galvanic isolator may beused.

Fig 20 Application of 4/20mA output

9.5.3 Configuration When a BA367E-SS Counter is supplied with anoptional 4/20mA output the configuration menu isextended as shown in Fig 20. The 4/20mA outputsub-menu is accessed via the 4-20 oP function.

The 4/20mA output sub-menu allows the 4/20mAoutput to be controlled by the rate or the totaldisplay.

9.5.4 Access 4/20mA output sub-menu: 4-20 oP

Access the BA367E-SS Counter configuration menuas described in section 6.2. Using the & and *push buttons scroll though the menu until 4-20 oP isdisplayed, pressing ( will then access the 4/20mAoutput sub-menu which is shown in Fig 21.

Fig 21 4/20mA output configuration sub-menu

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9.5.5 Enable 4/20mA output: EnbL

This function allows the 4/20mA output to bedisabled or enabled without altering any of the4/20mA output parameters. Using the & or *push button select EnbL in the 4-20 oP sub-menuand press ( to reveal the existing setting on or oFF.The function can be changed by pressing the & or* push button followed by the ) button to returnto EnbL prompt.

Note 1: When the 4/20mA output is disabled byselecting oFF, the output is a constant3.5mA irrespective of the instrumentdisplay.

9.5.6 Select rate or total source: 4-20tYPE

The 4/20mA output current can represent theBA367E-SS Counter’s rate or total display and thisshould be defined before any other 4/20mA currentoutput functions are configured.

Using the & or * push button select 4-20tYPE inthe 4/20mA output sub-menu and press ( to revealthe existing setting totAL or rAtE. The function canbe changed by pressing the & or * push buttonfollowed by the ) button to return to 4-20tYPE

prompt.

Note : If the controlling source of the 4/20mAoutput is changed i.e. from rate to total, the4/20mA output will be disabled and theoutput will be a constant 3.5mAirrespective of the instrument display. The4/20mA output must always be re-enabledand reconfigured following the controllingsource being changed.

9.5.7 Display which corresponds to 4mA output: 4 . 000

The BA367E-SS Counter display which correspondsto a 4.000mA output current is defined by thisfunction. Using the & or * push button select4 . 000 in the 4/20mA output sub-menu and press( to reveal the existing rate or total display withone digit flashing. The required display can beentered using the & or * push button to adjust theflashing digit and the ( button to transfer control tothe next digit. When set as required press ) toenter the value and return to the 4 . 000 prompt in the4/20mA output sub-menu.

9.5.8 Display which corresponds to 20mA output: 20.000

The BA367E-SS Counter display which correspondsto a 20.000mA output current is defined by thisfunction. Using the & or * push button select20 . 000 in the 4/20mA output sub-menu and press(. to reveal the existing rate or total display withone digit flashing. The required display can beentered using the & or * push button to adjust theflashing digit and the ( button to transfer control tothe next digit. When set as required press ) toenter the value and return to the 20 . 000 prompt inthe 4/20mA output sub-menu.

Note : If the BA367E-SS Counter and the 4/20mAcurrent sink output are powered fromseparate supplies, the 4/20mA outputcurrent will continue to flow when theBA367E-SS Counter supply fails or isturned off. Powering both from a commonsupply eliminates this effect.

9.6 Display backlightThe BA367E-SS Counter can be supplied with afactory fitted backlight that produce greenillumination enhancing display contrast and enablingit to be read at night or in poor lighting conditions.The backlight is internally powered from theinstrument therefore no additional wiring orintrinsically safe interface are required, but theBA367E-SS supply current increases as shownbelow.

BA367E-SS Maximum current consumption

Without backlight 10.0mAAddition for backlight 22.5mA

Addition with terminals 3 & 4 linked 6.0mA ----------

Total current 38.5mA max

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Appendix 1Dust certification

A1.0 ATEX dust certificationIn addition to ATEX certification permittinginstallation in explosive gas atmospheres which isdescribed in the main section of this instructionmanual, the BA367E-SS Counter has ATEXcertification permitting installation in combustibledust atmospheres.

This appendix describes ATEX installations inexplosive dust atmospheres conforming withEN 60079-14 Electrical installations design,selection and erection. When designing systems forinstallation outside the UK the local Code of Practiceshould be consulted.

The Counter's dust input and output safetyparameters are identical to its gas parameters,therefore all the electrical circuits shown in the mainsection of this manual may also be used for dustapplications. Intrinsically safe systems in dustatmospheres only have to comply with IIBrequirements. Apparatus certificates for intrinsicallysafe interfaces usually specify Co and Lo for IICgases, but for use with apparatus in dustatmospheres these may be increased to the IIBfigures. For a IIC interface with a Uo of 28V and anIo of 93mA, Co increases from 83nF to 650nF andLo increases by a factor of 4 for IIB.

A1.1 Zones, and Maximum SurfaceTemperature

The BA367E-SS has been ATEX certified as GroupII, Category 1D Ex ia IIIC T80ºC Da apparatus, Ta -40 to 60°C.

When connected to a suitable system the Countermay be installed in:

Zone 20 explosive atmosphere in the form of acloud of combustible dust in air iscontinuously present, or for longperiods or frequently.

Zone 21 explosive atmosphere in the form of acloud of combustible dust in air islikely to occur occasionally in normaloperation.

Zone 22 explosive atmosphere in the form of acloud of combustible dust in air is notlikely to occur in normal operation, butif it does occur, will only persist for ashort period.

Be used with dust in subdivisions:

IIIA combustible flyings

IIIB non-conductive dust

IIIC conductive dust (For use with IIIC conductive dusts special conditions for safe use apply – see section A1.4)

Having a Minimum Ignition Temperature of:

Dust cloud 120°C

Dust layer on indicator 155°Cup to 5mm thick

Dust layer on indicator Refer toover 5mm thick. EN 60079-14

At an ambient temperature between -40 and +60°C

A1.3 Maintenance

ENSURE PLANT SAFETY BEFORESTARTING MAINTENANCE

Live maintenance is permitted onintrinsically safe equipment installed in ahazardous area, but only certified testequipment should be used.

The BA367E-SS has IP66 front of panel protectionand a gasket is provided to seal the joint betweenthe instrument and the mounting panel thuspreventing dust ingress from the outside. The rearof the instrument has IP20 protection therefore whenused in any dust application the panel enclosure inwhich the instrument is mounted should provide atleast IP54 ingress protection. For applications in IIICconductive dusts, IP6X protection is required.

A1.4 Special conditions for safe useThe ATEX certificate has an ‘X’ suffix indicating thatspecial conditions for safe use are required forinstallation dust atmospheres, the certificate states:

• For use in group III explosive dust atmospheres the BA367E-SS shall be mounted such that the rear of the instrumenthas at least IP54 protection.

• For use in group IIIC conductive explosive dust atmospheres the BA367E-SS shall be mounted such that the rear terminals have at least IP6X protection.

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A1.5 Installation in an Ex t panel enclosure within Zone 21 or Zone 22. Installation of a BA367E-SS Counter in an Ex t IIICpanel enclosure does not invalidate the Ex t panel'scertification as the front of BA367E-SS complies withEx t impact and ingress requirements. Althoughmounted in an Ex t panel enclosure, the BA367E-SSremains Group II, Category 1D Ex ia IIIC T80ºC Daintrinsically safe apparatus and therefore should bepowered via a Zener barrier or galvanic isolator asdescribed in section 4.1 and 4.2 of this manual.

Fig 22 Typical installation in Ex t panel enclosure

The Zener barrier, galvanic isolator or associatedapparatus is usually installed in the safe area, but ifsuitably certified may be mounted in the same Ex tcpanel enclosure as the Counter for Zone 22applications providing the surface temperature of theenclosure is not exceeded.

The Counter terminals, the wiring to the Counter andthe intrinsically safe interface, if mounted within theenclosure, should be segregated from all other non-intrinsically safe wiring and equipment within thepanel enclosure as required by EN 60079-11Equipment protected by intrinsic safety andEN 60079-14 Electrical installations design,selection and erection.

If live maintenance is anticipated, it is recommendedthat the Ex t panel enclosure should be fitted with awarning label saying 'Do not open when non-intrinsically safe circuits are energised', alternativelyall bare live non-intrinsically safe parts within thepanel enclosure should have an IP30 cover carryinga warning label 'Do not open when energised'.

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Appendix 2 IECEx certification

A2.0 The IECEx Certification SchemeIECEx is a global certification scheme for explosionprotected products which aims to harmoniseinternational certification standards. For additionalinformation about the IECEx certification schemeand to view the BEKA associate certificates, pleasevisit www.iecex.com

A2.1 IECEx Certificate of ConformityThe BA367E-SS Counter has been issued with anIECEx Certificate of Conformity numberIECEx ITS 16.0004X which specifies the followingcertification code:

Ex ia IIC T5 Ga Ex ia IIIC T 80ºC Da -40ºC ≤ Ta ≤ +60ºC

When installed as purely intrinsically safe apparatusi.e. when not relying upon the ingress and impactresistance of the Counter front in an Ex e, Ex p, Ex nor Ex t panel enclosure the ambient temperaturerange is increased to -40ºC ≤ Ta ≤ +70ºC

The IECEx certificate may be downloaded fromwww.beka.co.uk, www.iecex.com or requested fromthe BEKA sales office.

A2.2 InstallationThe IECEx intrinsic safety parameters are identicalto the ATEX safety parameters described in the mainsection of this manual and both refer to the samestandards. Therefore the ATEX installationrequirements specified in section 5 and Appendix 1of this manual may be used for IECEx installations,but the local code of practice should also beconsulted.

A2.3 Special conditions for safe useThe IECEx intrinsic safety certificate number has an‘X’ suffix indicating that for some applications specialconditions apply for safe use.

• For use in group III explosive dust atmospheres the BA367E-SS shall be mounted such that the rear of the instrumenthas at least IP54 protection.

• For use in group IIIC conductive explosive dust atmospheres the BA367E-SS shall be mounted such that the rear terminals have at least IP6X protection.

This means that when installed in an Ex e, Ex n,Ex p or Ex t panel enclosure the BA367E-SSremains an intrinsically safe instrument and mustcomply with the installation requirements shown inthis manual.

The certificate also states:

The front of the stainless steel enclosurecomplies with the requirements for Ex e, Ex nEx p & Ex t type of protection.

Therefore when correctly installed in a certified panelenclosure the BA367E-SS Counter will not invalidatethe Ex e, Ex n, Ex p or Ex t panel enclosurecertification.

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Appendix 3 ETL & cETL certification forinstallations in USA and Canada

A3.0 cETL MarkFor installations in the USA and Canada, theBA367E-SS rugged Counter has ETL and cETLintrinsic safety and nonincendive approval, ControlNumber 4008610. Copies of the Authorisation toMark are available from the BEKA associates salesoffice and www.beka.co.uk

A3.1 Intrinsic safety approvalThe US and Canadian standards used forassessment and certification of the BA367E-SS arelisted on the cETL Authorisation to Mark.

Installations must comply with BEKA associatesControl Drawing CI330-52, which is attached to thisappendix.

The ETL and cETL safety parameters are the sameas the ATEX and IECEx parameters, the systemsshown in sections 3 and 4 of this manual maytherefore also be used for US and Canadianinstallations subject to compliance with local codesof practice.

ETL and cETL intrinsic safety codes

CL I Div 1 Groups A, B, C, D T5 (US IS gas, Div cert) CL II Div 1 Groups E, F, G. CL III (US IS dust, Div cert)

Class I Zone 0 AEx ia IIC T5 Ga (US IS gas, Zone cert)Zone 20 AEx ia IIIC T80ºC Da (US IS dust, Zone cert)

Ex ia IIC T5 Ga (Canadian IS gas, Zone cert)Ex ia IIIC T80ºC Da (Canadian IS dust, Zone cert)

-40ºC Ta 60ºC

A3.2 Nonincendive approvalThe BA367E-SS rugged Counter also has ETL andcETL nonincendive approval allowing installation inDivision 2 hazardous (classified) locations withoutthe need for Zener barriers or galvanic isolators.

Installations must comply with BEKA associatesControl Drawing CI330-53, which is attached to thisappendix and the local codes of practice.

ETL and cETL nonincendive codes US & Canada

CL I Div 2 Groups A, B, C, D T5CL II Div 2 Groups F, G CL III Div 2-40ºC Ta 70ºC

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ba367e-ss rugged one input intrinsically safe counter...3.1 atex gas certification 3.2 zones, gas...

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