differential pressure transmitters dpt-dual...

Copyright HK Instruments 2017 www.hkinstruments.fi Installation version 6.0 2017

INSTALLATIONINSTRUCTIONS

DIFFERENTIAL PRESSURE TRANSMITTERS DPT-Dual-MOD Series

• READ THESE INSTRUCTIONS CAREFULLY BEFORE ATTEMPTING TO INSTALL, OPERATE OR SERVICE THIS DEVICE.

• FailuretoobservesafetyinformationandcomplywithinstructionscanresultinPERSONALINJURY,DEATHAND/ORPROPERTY DAMAGE.

• Toavoidelectricalshockordamagetoequipment,disconnectpowerbeforeinstallingorservicinganduseonlywiringwithinsulationratedforfulldeviceoperatingvoltage.

• Toavoidpotentialfireand/orexplosiondonotuseinpotentiallyflammableorexplosiveatmospheres.

• Retaintheseinstructionsforfuturereference.• Thisproduct,wheninstalled,willbepartofanengineeredsystemwhosespecificationsandperformancecharacteristicsarenotdesignedorcontrolledbyHKInstruments.Reviewapplicationsandnationalandlocalcodestoassurethattheinstallationwillbefunctionalandsafe.Useonlyexperiencedandknowledgeabletechnicianstoinstallthisdevice.

SPECIFICATIONS

ThankyouforchoosinganHKInstrumentsDPT-Dual-MODseriesdifferentialpressuretransmitter.DPT-Dual-MODcombinestwodif-ferentialpressuretransmittersintoonedevice.Itoffersapossibilitytomeasurepressurefromtwodifferentpoints.IthasaModbusin-terfaceandanInputterminal.

TheInputterminalenablesreadingofmultipleothersignalssuchastemperatureorcontrolrelaysoverModbus.TheInputterminalhastwo input channels designed to accept 0−10V,NTC10k, Pt1000,Ni1000/(-LG),andBININ(potentialfreecontact)signals.Forexam-ple,DPT-Dual-MODcanreadvaluesfromonedifferentialpressuremeasurementpointandtwotemperaturemeasurementpoints.

DPT-Dual-MODseriesdevicesarecommonlyusedinHVAC/Rsystems for:•fan,blowerandfiltermonitoring•pressureandflowmonitoring•valveanddampercontrol•pressuremonitoringincleanrooms

DPT-Dual-MOD-AHUcanalsobeusedfor:•airflowmonitoringacrosscentrifugalfansandblowers•in-ductairflowmonitoring•VAVapplications

SPECIFICATIONS

PerformanceAccuracy (from applied pressure):Model2500:Pressure<125Pa=1%+±2PaPressure>125Pa=1%+±1PaModel7000:Pressure<125Pa=1.5%+±2PaPressure>125Pa=1.5%+±1Pa (Including:generalaccuracy,temperaturedrift,linearity,hysteresis,longtermstabilityandrepetitionerror)Response time:1...20sselectableviamenuOverpressure:Proofpressure:25kPaBurstpressure:30kPa

CommunicationProtocol:MODBUSoverSerialLineTransmissionMode:RTUInterface:RS485Byteformat(11bits)inRTUmode: CodingSystem:8-bitbinary BitsperByte: 1startbit 8databits,leastsignificantbitsent first 1bitforparity 1stopbitBaudrate:selectableinconfigurationModbusaddress:1−247addressesselectableinconfigurationmenu

Zeropointcalibrationoptions:•Manualpushbuttonautozero•ViaModbuswritecoil

Technical SpecificationsMedia compatibility:Dryairornon-aggressivegasesMeasuring units on display (Selectable via menu): Pressure:Pa,kPa,mbar,inchWC,mmWC,psiFlow(AHUmodel):m3/s,m3/hr,cfm,l/s,m/s,ft/minMeasuring element:MEMSEnvironment:Operatingtemperature:-10...+50°CStoragetemperature:-20...+70°CHumidity:0to95%rH

PhysicalDimensions: Case:102.0x71.5x36.0mmWeight: 150g,withaccessories290gMounting: 2each4.3mmscrewholes,oneslottedMaterials: Case: ABSLid:PCPressure inlets: BrassDuctconnectors:ABSTubing:PVCProtection standard: IP54Display:2-linedisplay(12characters/line)Line1:activemeasurement,inletALine2:activemeasurement,inletBIfinputsareselected,thelinesshowalsoinputinformation(forexampletemperature)

Electrical Connections:4+4springloadterminals,max1.5mm2

CableEntry:M20Pressure connections:Male 5,0mmand6,3mm

ElectricalSupply voltage: 24VACorVDC±10%Power consumption:<1.3WOutput signal:viaModbus ConformanceMeetsrequirementsforCEmarking:EMCdirective2014/30/EURoHSDirective2011/65/EUWEEEDirective2012/19/EU

INTRODUCTION WARNING

APPLICATIONS

COMPANY WITHMANAGEMENT SYSTEMCERTIFIED BY DNV GL

= ISO 9001 = ISO 14001 = RoHS 22011/65/EU


SCHEMATICS

DIMENSIONAL DRAWINGS

Figure 1a - Mounting orientation

Figure 1b - Application connections

Display connection

A

B

24 V

GND

LEDs

Joystick 1

Joystick 2

Joystick 3

Select

Up

Down

Menu buttons

Terminal blocks

Pressuresensors

Input terminalconfiguration

jumpers

Input 1

Input 2

GND

GND

InputOutput

Pressure inlet A

Pressure inlet B

YES NO NO

Static pressure Filter/Dampermonitoring

Fan/Blowermonitoring

Notconnected

INSTALLATION

1)Mountthedeviceinthedesiredlocation(seestep1).2)Openthelidandroutethecablethroughthestrainreliefandconnectthewirestotheterminalblock(s)(seestep2).

3)Thedeviceisnowreadyforconfiguration.

WARNING!Applypoweronlyafterthedeviceisproperlywired.

Pressure

Flow

Thepressuretubesareconnectedtoaflowmeasurementprobe(i.e.FloXact),ortothemeasurementportsspecifiedbythefanmanufacturer.PleaseseetheFloXactinstallationguideorthefanmanufacturer’stechnicalspecificationsformoreinformation.

STEP 1: MOUNTING THE DEVICE

1)Selectthemountinglocation(duct,wall,panel).2)Usethedeviceasatemplateandmarkthescrewholes.3)Mountwithappropriatescrews.

MOUNTING THE DEVICE CONTINUED

STEP 2: WIRING DIAGRAMS

ForCEcompliance,aproperlygroundedshieldingcableisrequired.1)Unscrewthestrainreliefandroutethecable(s).2)Connectthewiresasshowninfigure2aand2b.3)Tightenthestrainrelief.

Figure 2a - Wiring diagram

Figure 2b - Wiring diagram example for input signals

Input 1

Input 2GND

GND

Pt1000

NTC10k

J1

J2

J3

IN1 IN2

Input 1 Pt1000 temperature:Function 04 - Read input register 3x0005Input 2 NTC10k temperature:Function 04 - Read input register 3x0008

AB

24 V

GND+ Power Supply

24VDC / 24VAC

Input 1

Input 2GND

GND

Modbus


NOTE! Always zero the device before use.Supplyvoltagemustbeconnectedonehourbeforethezeropointadjustmentiscarriedout.AccessviaModbusorbypushbutton.

1)Loosebothtubesfromthepressureinlets+and-.2)Regularmodel:Presstheselectbuttonbriefly.AHUmodel:Presstheselectbuttonfor3sectoenterthemenuandselectzero sensors.3)WaituntiltheLEDturnsoffandtheninstalltubesagainforthepressureinlets.

CONFIGURATION CONTINUED STEP 3: CONFIGURATION

9)SelecttheaddressforModbus:1...247.

BAUD RATE 9600

SELECT

UP

DOWN

ADDRESS 99

SELECT

UP

DOWN

PARITY BIT NONE

SELECT

UP

DOWN

10)Selectthebaudrate:9600/19200/38400.

11)Selecttheparitybit:None/Even/Odd.

12)Selectthepressureunitfordisplay:Pa/inchWC/mmWC/psi/mbar.(Not for AHU model)

PRESS. UNIT Pa

SELECT

UP

DOWN

13)Selecttheresponsetime:1...20s.

RESPONSETIME 20 s

SELECT

UP

DOWN

14)Pushtheselectbuttontoexitmenu.

SELECT EXIT MENU

SELECT

STEP 4: ZERO POINT ADJUSTMENT

SELECT

1)ActivatethedeviceMenubypushingthetheselectbuttonfor2seconds.

Points 2–8 for AHU model only:

3)Ifcommonprobeselected:selectmeasurementunitsusedintheformula(akaFormulaunit)(i.e.l/s)

FORMULA UNIT l/s

SELECT

UP

DOWN

4)SelectK-valueEach application has a specific K-value. Select the K-value from themanufacturer’sspecifications.AvailableK-valuerange:0.001...9999.000

K-VALUE 9000.000

SELECT

UP

DOWN

5)Selectpressureunitfordisplayandoutput:Pa,kPa,mbar,inWCormmWC

PRESS.UNIT Pa

SELECT

UP

DOWN

6)Selectflowunitfordisplayandoutput:Flowvolume:m3/s,m3/h,cfm,l/sVelocity:m/s,f/min

FLOW UNIT m3/s

SELECT

UP

DOWN

2)Selectthefunctioningmodeofthedevice:-SelectManufacturerwhenconnectingDPT-Dual-MOD-AHUtoafanwithpressuremeasurementpoints

-SelectCommon probe whenusingDPT-Dual-MOD-AHUwithacommonmeasurementprobethatfollowstheformula:

q=k∙√∆P(i.e.FloXact)

7)Selectthethetypeofsensorforinput1:NTC10k, Ni1000-LG, Ni1000, Pt1000, VINPUT (voltage 0–10 V),none(sensor1willnotbeshownondisplay)

SENSOR 1 NTC10K

SELECT

UP

DOWN

7)Selectthethetypeofsensorforinput2:NTC10k, Ni1000-LG, Ni1000, Pt1000, VINPUT (voltage 0–10 V),none(sensor2willnotbeshownondisplay)

SENSOR 2 NONE

SELECT

UP

DOWN

MANUFACTURER Common probe

SELECT

UP

DOWN

Common probe Flakt Woods

SELECT

UP

DOWN


Thesellerisobligatedtoprovideawarrantyoffiveyearsforthedeliv-eredgoodsregardingmaterialandmanufacturing.Thewarrantyperiodisconsideredtostartonthedeliverydateoftheproduct.Ifadefectinrawmaterialsoraproductionflawisfound,thesellerisobligated,whentheproductissenttothesellerwithoutdelayorbeforeexpirationofthewarranty,toamendthemistakeathis/herdiscretioneitherbyre-pairingthedefectiveproductorbydeliveringfreeofchargetothebuy-eranewflawlessproductandsendingittothebuyer.Deliverycostsfortherepairunderwarrantywillbepaidbythebuyerandthereturncostsbytheseller.Thewarrantydoesnotcomprisedamagescausedbyaccident, lightning,floodorothernaturalphenomenon,normalwearandtear,improperorcarelesshandling,abnormaluse,overloading,im-properstorage,incorrectcareorreconstruction,orchangesandinstal-lationworknotdonebythesellerorhis/herauthorizedrepresentative.Theselectionofmaterialsfordevicespronetocorrosionisthebuyer’sresponsibility,unlessotherwiseislegallyagreedupon.Shouldtheman-ufactureralterthestructureofthedevice,thesellerisnotobligatedtomakecomparablechangestodevicesalreadypurchased.Appealingforwarrantyrequiresthatthebuyerhascorrectlyfulfilledhis/herdutiesarisenfromthedeliveryandstatedinthecontract.Thesellerwillgiveanewwarrantyforgoodsthathavebeenreplacedorrepairedwithinthewarranty,howeveronlytotheexpirationoftheoriginalproduct’swarrantytime.Thewarrantyincludestherepairofadefectivepartordevice,or ifneeded,anewpartordevice,butnot installationorex-changecosts.Undernocircumstance is theseller liable fordamagescompensationforindirectdamage.

Register Parameter description Data Type Value Range

3x0001 Programversion 16bit 0...1000 0,00...99,00

3x0002 PressurereadingA 16bit -250...2500/7000 -250...2500/7000(Pa)

3x0003 PressurereadingB 16bit -250...2500/7000 -250...2500/7000(Pa)

3x0004 Input1:0...10V 16bit 0...1000 0...100%

3x0005 Input1:Pt1000 16bit -500...500 -50...+50°C

3x0006 Input1:Ni1000 16bit -500...500 -50...+50°C

3x0007 Input1:Ni1000-LG 16bit -500...500 -50...+50°C

3x0008 Input1:NTC10k 16bit -500...500 -50...+50°C

3x0009 Input2:0...10V 16bit 0...1000 0...100%

3x0010 Input2:Pt1000 16bit -500...500 -50...+50°C

3x0011 Input2:Ni1000 16bit -500...500 -50...+50°C

3x0012 Input2:Ni1000-LG 16bit -500...500 -50...+50°C

3x0013 Input2:NTC10k 16bit -500...500 -50...+50°C

AHU model only:

3x0014 Flowm3/s 16bit 0...10000 0...100m3/s

3x0015 Flowm3/h 16bit 0...30000 0...30000m3/h

3x0016 Flowcfm 16bit 0...30000 0...30000cfm

3x0017 Flowl/s 16bit 0...3000 0...3000l/s

3x0018 Velocitym/s 16bit 0...1000 0...100m/s

3x0019 Velocityf/min 16bit 0...5000 0...5000f/min

Function04-Readinputregister

The parts left over from installation should berecycled according to your local instructions.Decommissioned devices should be taken to arecyclingsitethatspecializesinelectronicwaste.STEP 6: MODBUS REGISTERS

RECYCLING/DISPOSAL

WARRANTY POLICY

Functioncode03-Readinputholdingregister-AHU model only


4x0001 Manufacturer 16bit 0...7 0...7

4x0002Formulaunit(Manufac-

turer=7)16bit 0...5

0=m3/s,1=f/min,2=m/s,3=l/s,4=cfm,

5=m3/h

4x0003 K-FactorInteger 16bit 0...9999 0...9999

4x0004 K-FactorDecimal 16bit 0...999 0...999

4x0005 ResponseTime 16bit 0...20 0...20s

MODBUS REGISTERS CONTINUED

Functioncode02-Readinputstatus


1x0001 Input1:BININ Bit0 0...1 On-Off

1x0002 Input2:BININ Bit0 0...1 On-Off

Function05-Writesinglecoil


0x0001 Zeroingfunction Bit0 0...1 On-Off

Functioncode06-Writesingleregister-AHU model only


4x0001 Manufacturer 16bit 0...7 0...7

4x0002Formulaunit(Manufac-

turer=7)16bit 0...5

0=m3/s,1=f/min,2=m/s,3=l/s,4=cfm,

5=m3/h

4x0003 K-FactorInteger 16bit 0...9999 0...9999

4x0004 K-FactorDecimal 16bit 0...999 0...999

4x0005 ResponseTime 16bit 0...20 0...20s

STEP 5: INPUT SIGNAL CONFIGURATION

InputsignalscanbereadoverModbusviaDPT-MODRS485interface.

Signals Accuracy for measurement Resolution

0...10V <0,5% 0,1%

NTC10k <0,5% 0,1%

Pt1000 <0,5% 0,1%

Ni1000/(-LG) <0,5% 0,1%

BININ(potentialfreecontact)

Thejumpersshouldbesetaccordingtotheinstructionsbelowandthevalueshouldbereadfromtherightregister.Bothinputscanbeconfig-uredindependently.

Figure 3 - Input signal configuration

J1

J2

J3

IN1 IN2

J1

J1

J1

J2

J2

J2

J3

J3

J3

NTC10k / BIN IN

Pt1000 / Ni10007(-LG)

0...10 V

differential pressure transmitters dpt-dual...

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