operating instruction - hitech technologies, inc ...drlevel.com/pdf/hitech_vega_cap_ek.pdf · 2...

Level and Pressure

Operating InstructionCapacitive electrodes EK4 … 20 mA - compact

2 Capacitive electrodes EK 4 … 20 mA - compact

Safety information

Safety information

The described module must only be installed andoperated as described in this operatinginstruction. Please note that other action cancause damage for which VEGA does not takeresponsibility.

Capacitive electrodes EK 4 … 20 mA - compact 3

Contents

Safety information ......................................................................... 2

1 Product description

1.1 Function and configuration ................................................... 4

1.2 Types and versions ............................................................... 5

1.3 Technical data ....................................................................... 7

1.4 Approvals ............................................................................ 12

1.5 Dimensions ......................................................................... 13

1.6 Type plate ........................................................................... 15

2 Mounting

2.1 Mounting instructions .......................................................... 16

3 Electrical connection

3.1 Connection instructions ...................................................... 21

3.2 Wiring plan .......................................................................... 21

4 Set-up

4.1 General adjustment ............................................................ 25

4.2 Adjustment - Oscillators CAP E32 Ex and CAP E32 H Ex ... 26

4.3 Adjustment with VVO ............................................................ 29

4.4 Adjustment with HART®-handheld ...................................... 35

5 Diagnosis

5.1 Simulation ........................................................................... 42

5.2 Maintenance ....................................................................... 42

5.3 Repair ................................................................................. 42

5.4 Failure removal .................................................................... 43

Contents


Product description

1 Product description

1.1 Function and configuration

Capacitive electrodes series EK detect levels ofvirtually any medium unaffected whetherliquids, powders or pastes. This is also valid foradhesive products.

The electrode measures also the levelcapacitance and the ohmic resistance(admittance processing). Hence alsoproblematic mediums and solids withfluctuating humidity contents can be detected.

By the use of screening tubes and screensegments, inactive areas can be provided onthe probe where pollution, condensation orpermanent build-up do not influence themeasuring result.

Measuring principleElectrode, medium and vessel wall form anelectrical capacitor.

The capacitance of the capacitor is mainlyinfluenced by three factors:- distance of the electrode plates (a)- size of the electrode plates (b)- kind of dielectricum between the electrodes

(c)

Fig. 1.1 Plate capacitor (schematicdemonstration)

Electrode and vessel wall are the capacitorplates. The medium is the dielectricum. Due tothe higher dielectric constant figure (DK-value)of the medium against air, the capacitance ofthe capacitor increases with raising covering ofthe electrode.

Fig. 1.2 Capacitance change with coveredelectrode

a

b

c

The capacitance change is processed by theoscillator and converted into a level proportio-nal measured value. The measured value isprovided analogue as standardized, floating4 … 20 mA-current signal, optionally also asHART®-communication protocol.The sensor can be adjusted via the integraloscillator. Optionally the adjustment withHART®-handheld or PC with VVO-adjustmentsoftware is also possible.

With the continuous level measurement theappropriate level is continuously detected andconverted into a level proportional signal whichis either directly displayed or further processed.

You require a capacitive electrode series EKwith oscillator CAP E32 Ex or CAP E32 H Ex.

The continuous measurement assumes acontant dielectric constant figure εr , i.e. themedium should have steady features.


Product description

1.2 Types and versions

Type*) EK EK EK EK EK

Version 11 21 24 31 42

continuous • • • • •

partly insulated • •

fully insulated • • •

Oscillators

CAP E32 Ex • • • • •

CAP E32 H Ex • • • • •

Approvals

PTB-no. Ex 98.E.2085 • • • • •

Overfill protectionacc. to WHG1) • • • • •

German Lloyd 1) • • • • •

Lloyds Register of Shipping 1) • • • • •

American Bureau of Shipping 1) • • • • •

Bureau Veritas 1) • • • • •

RINA 1) • • • • •

Mechanical connection

G 3/4 A • • • • •

G 1 A • • • • •

3/4" NPT • • • • •

1“ NPT • • • • •

Flange plated •

Electrode material

Steel •

StSt •2) •2) •3) •4) •3)

Isolating material 5)

PTFE • • •

FEP • •

PE • • •

Concentric tube

StSt (1.4435) • •

*) All instrument types also Ex01) applied2) 1.44353) 1.45714) 1.44015) For electrodes, which are certified for Ex-Zone 0, only PTFE and FEP are approved as isolating material.


Product description

Type*) EK EK EK EK EKVersion 11 21 24 31 42

Screening tube (option)StSt • • • •

Temperature adapter (option)

StSt (1.4435) • • •

Housing material

Plastic (IP 66) • • • • •

Aluminium - plastic coated(IP 66 / 67) • • • • •

Others

Overvoltage protection - Option(integrated) • • • • •

Bending ofelectrode 6) • •7)

*) All instrument types also Ex01) applied2) 1.44353) 1.45714) 1.44015) For electrodes, certified for Ex-Zone 0, only PTFE and FEP are approved as isolating materials by ATEX II 1/2

G EEx ia IIC T6.6) Bending max. 90°7) EK 21 only PTFE with 3,2 mm isolation thickness


Product description

1.3 Technical data

Housing

Housing material plastic PBT (Polyester) or Aluminiumplastic coated

Protection- plastic housing IP 66- Aluminium housing IP 66 and 67 (meets both protections)Cable entry 1 piece M20 x 1,5Terminals for max. 1,5 mm2 cross-section area of conductor

Mechanical connection

Material 1.4435 (316 L)Thread G 3/4 A or 3/4" NPT

G 1 A or 1“ NPTFlange flange version, plated

Electrode

Material (rod) EK 11 1.4435 (316 L)EK 21 steel (St 37), 1.4435 (316 L)EK 31 1.4401 (316 L)EK 24, 42 1.4571 (316 L)

Length- rod max. 3 m- cable max. 20 mIsolation see "Isolation materials"Max. tensile strength (cable)- EK 31 3 KN- EK 42 3 KN

Ambient conditions

Ambient temperature on the housing -40°C … +80°CMedium temperature see "Medium temperature and operating pressure"Storage and transport temperature -40°C … +80°COperating pressure see "Medium temperature and operating pressure"

Oscillators CAP E32 Ex, CAP E32 H Ex

Protection class IIOvervoltage category IIIMeasuring frequency 300 KHzCapacitance ranges 0 … 3000 pF


Oscillators in two-wire technology for capacitive electrodes EK

Type Application Meas. range Freguency Signalcond.instr.CAP E32 Compact electronics 4 … 20 mA for 0 - 3000 pF 300 KHz not requiredEx continuous level measurement,

according to the principle ofphase selective admittance processingParameter adjustment viakeys on the oscillator

CAP E32 H Compact electronics 4 … 20 mA for 0 - 3000 pF 300 KHz not requiredEx continuous level measurement,

according to the principle ofphase selective admittance processingParameter adjustment viakeys on the oscillator,VVO from V. 2.30 orHART®-handheld

Supply voltage 12 … 36 V DCfor Ex-applications note the stated permissibleelectrical connection values in the certificate.

Potential separation min. 500 V DC

Product description

12

200

600

800

18 24 30 36

1000

Load in Ω

Supplyvoltage in V

Accessory

Straining spring of 1.4571- length approx. 185 mm (stressed)- tensile load approx. 200 N

Weight

Basic weight (e.g. EK 24) approx. 0,8 kgRod weight ø 6 mm - 0,23 kg/m

ø 10 mm - 0,62 kg/m


Product description

+

– 0 % 5 % 10 %

15 % vol.

fully insulatedelectrode

partlyinsulatedelectrode

Solidhumidity (%)

Levelmeasuredvalue

Fig. 1.3 Humidity change

Oscillator

The oscillator CAP E32 (H) Ex with the patentedprocessing (phase selective admittanceprocessing) extends the application range ofcapacitive level measurement technology. Thisfunction can be switched on, see 4 Set-up.

In conjunction with a fully insulated rodelectrode, the oscillator compensates evenstrong conductive build-up.

Mounted in an individual rod or cable electrodetype EK, this oscillator ensures also the exactmeasurement in solids with varying humiditycontents.

The oscillator processes the measuringcurrents according to the phase position.Measuring currents with a defined phaseshifting as they occur with build-up or humiditychanges are filtered out.

Humidity change

A humidty change in solids causes a change ofthe dielectric constant figure (εr). In parallel theohmic value of the medium changes. Due to thechange also a phase shifting of the measuringcurrents is caused.

With a capacitive measurement already lowesthumidity changes cause measuring errors.Typical products are, e.g. sand, aggregate inthe cement industry, hop or plastic granules(after drying).

When using the oscillator CAP E32 (H) Exhumidity changes of 15 % vol. do not influencethe accuracy of the measurement. Evenlayering of product with different humidity donot play a role for the measuring accuracy.

1) Actual value level

1)

When the humidity contents exceeds 15 % vol.fully and partly insulated electrodes reactdifferently (see also "Fig. 1.3 Humiditychange“). Whereby the measured value on fullyinsulated electrodes raises with steady level,the measured value on partly insulatedelectrodes drops.


0–50 100

40

200 °C

bar

25

0–50 100

40

°C

bar

0–30 60 80

40

bar

°C

16

3

2

1EK 21 to 16 bar

Temperatureadapter

EK 42:to 16 barEK 24:from 100°C 6 bar,max. 150°C for30 mins.

Product description

PE

PT

FE

FE

P

Medium temperature and operatingpressure 1)

The figures in the tables relate to the figures onthis page. The statements on pressure are validfor screw connections G 3/4 A, 3/4“NPT,G 1 A, 1“NPT.With flange versions you have to note theirnominal pressure.All electrodes are also suitable for vacuum(-1 bar).

For electrodes certified for Ex-Zone 0, onlyPTFE and FEP are approved as isolatingmaterial.

Mechanical connection, 1.4571

Isolation

Electrode type

EK 11 1 3 -

EK 21 1 3 -

EK 21 with flange - 2 -

EK 24 - - 2

EK 31 1 3 -

EK 42 - - -

1) For Ex-applications the permissible temperatures and pressures stated in the certificate must benoted.Additionally note the table on the following page.


Product description

Electronics temperature

The following medium and ambienttemperatures must be kept, so that the limittemperature on the electronics is not exceeded.

Temperature class T4 (or no Ex)

Without temperature adapter- medium temperature -40°C … +135°C- ambient temperature1) -40°C … +90°CTemperature class T3

1) Ambient temperature on oscillator

With temperature adapterPlastic housing Metal housing

Medium temperature -40°C … 180°C 200°C 150°C 175°C 200°C

Ambient temperature1) -40°C … 80°C 75°C 80°C 69°C 58°C

Product description


Product description

Ship approvalsFor the use on ships, type approval certificatesare available of several ship classificationauthorities (GL, LRS, ABS, BV, RINA).

CE-approvalThe capacitive electrodes type EK meet theprotective regulations of EMVG (89/336/EWG)and NSR (72/23/EWG). The conformity hasbeen judged acc. to the following standards:EMVG Emission EN 50 081 - 1

Susceptibility EN 50 082 - 2NSR EN 61 010 - 1

Zone 2According to DIN VDE 0165, instruments canbe used in hazardous areas of zone 2 withoutapproval; they must meet the requirements insection 6.3 of this VDE. The compliance of theinstruments with these requirements isconfirmed by Messrs. VEGA in a manufacturerdeclaration.

1.4 Approvals

Explosion protectionOnly certified capacitive electrodes EK** Ex 0must be used in hazardous areas withcombustible gases, vapours or fog.Capacitive electrodes EK** Ex 0 are suitable forthe use in hazardous areas of zone 1 and zone0.Proof for the explosion protection of theseinstruments is the EC-type approval and theconformity certificate possibly with nationalzone 0 - annex issued by the approvalauthority. These documents are generallyattached to the instruments.When the capacitive electrodes are mountedand operated in hazardous areas, the Ex-installation regulations must be noted.The information and regulations of the suppliedcertificates (EC-type approval, conformitycertificate) of the capacitive electrodes as wellas of the appropriate instrument (signalconditioning instrument, separator, safetybarrier) must be noted.

• The mounting of Ex-systems must begenerally carried out by skilled staff.

• The capacitive electrodes must be poweredfrom an intrinsically safe circuit; thepermissible electrical values are stated in theappropriate certificate.

• Capacitive electrodes with electrosticallychargeable plastic parts are provided with awarning label informing about measureswhich must be taken to avoid dangerscaused by electrostatic discharges. Note thecontents of the warning label.

• The explosion protection of the instrumentused is only ensured when the limittemperatures stated in the certificate are notexceeded.

• In case of danger due to oscillation orvibration, the appropriate part of thecapacitive electrodes must be protected.

• After shortening of the electrode cable itmust be noted that the weight is sufficientlysecured by means of pins.


Type EK 31 (partly insulated)

L (min. 400 mm, max. 20000 mm)

5020

ø14

7

32

22,5

ø2,6

ø20

100

L34

M20x1,5

90

32,585

SW 41

G 3/4 A

Product description

1.5 Dimensions

Type EK 21 (fully insulated)Type EK 11 (partly insulated)

Type EK 24 (fully insulated,for adhesive products)

Dimensions of capacitive electrodes type EK … Ex 0

SW 41

5020

A

B

L35

M20x1,5

90

32,585

G 3/4 A

20

L35

ø14,4

M20x1,5

90

32,585

SW 41

G 3/4 A

20

AL35

M20x1,5

90

32,585

Isolation A BOuter-ø Rod-ø

PE 2,0 mm 14 mm 10 mmPTFE 2,0 mm 10 mm 6 mmPTFE 2,0 mm 14 mm 10 mm

L (min. 120 mm, max. 3000 mm)

L (min. 100 mm, max. 3000 mm) L (min. 100 mm, max. 3000 mm)

EK 11 with concentric tube

SW 41

G 3/4 A

EK 21 with concentric tube

L (min. 100 mm, max. 3000 mm)

20L

35

ø21,3

M20x1,5

90

32,585

SW 41

G 3/4 A

20L

35

ø21,3

M20x1,5

90

32,585

SW 41

G 3/4 A


2013

3

Product description

Housing

Temperature adapter

Housing of plastic / Aluminium

Concentric tube Screening tube

ø38

L

SW 41

of 1.4435

SW 41

10

ø38

L

of 1.4435 withclosing cone of PTFE

of 1.4435

M20x1,5

90

32,585

Closing coneø21,3

ø21,3

G 3/4 A or G1 A


ser. no. 10612892

Product description

1.6 Type plate

Before mounting and electrical connectionplease check if you use the suitable instrument.Therefore note the type plate which is locatedas follows:

1 Master data of the order no.2 Ex-certification number

Explosion protection version - note theinformation and regulations of the certificate

3 Data of the electronics / Approvals4 No. of the order confirmation /Pos.-no.5 Number of the electrode type6 Serial number7 Test mark when used as part of an overfill

protection for vessels storing waterendangering liquids - note the informationand regulations in the general type approval

8 Manufacturing year9 Number of the test authority

Type plate

The type plate contains important data requiredfor mounting and connection. The configurationand components of the type plate are henceexplained in the following example.

Configuration of the type plate (example)

Order codeDetailled information on the order you will findin the "Product Information Capacitive“ or in the"VEGA-Pricelist“.

6

VEGA® EK 11type EK11EXO.XGBVSTXXVKXX

see PTB Nr. EX-98.E.2085 EEx ia IIC T6 0032

PTB 98 ATEX 2086 II 1/2G EEx ia IIC T6

techn. data see document. / certificates 1998

protection: IP 66/67 Insp.

length: 400mm VVO: 02

Ord. no. 123456/000

3

1

4

2

® D-77757 Schiltach

5

8

9

Z-65.13.XXX

7


Mounting

Fig. 2.1 Lateral load

2 Mounting

2.1 Mounting instructions

GeneralDifferent mediums and requirements to themeasurement require various installations.Hence the following instructions should benoted.

Lateral loadNote that the electrode is not subjected tostrong lateral forces. Mount the electrode in aposition in the vessel where no interferinginfluences such as e.g. stirrers, filling openingetc. occur. This is mainly valid for very long rodand cable electrodes.

Extraction forcesIn case of strong extraction forces e.g. duringfilling or settling of solids, high tensile loads canbe caused.

In these cases use for short measuringdistances a rod electrode, as a rod is generallymore stable. If due to the length or themounting position a cable electrode should benecessary, the electrode should not bestrained, but only equipped with a gravityweight as then the cable can more easily followthe product movements. Note that the electrodecable does not touch the vessel wall.

PressureIn case of gauge or low pressure in the vessel,the mounting boss must be sealed on thethread. Use the attached seal ring. Check if theseal ring is resistant against the medium.

Isolating measures such as e.g. the covering ofthe thread with Teflon tape can interrupt theelectrical connection in case of metal vessels.Hence earth the electrode on the vessel.


Mounting

Fig. 2.2 Shortening of the electrode

Shortening of the electrodeThe dimensions of fully insulated electrodes arefixed and must hence not be modified. Eachmodification will destroy the instrument.

Partly insulated cable or rod electrodes can beshortened afterwards.The electrode basic capacitance isautomatically compensated during adjustment.It is hence possible to shorten the electrodesindividually.

Cable electrode EK 31 can also be shortenedafterwards (see fig. 2.2). Loosen the two pinson the gravity weight (hexagon) and remove thetwo pins. Pull the cable out of the gravityweight.

To avoid splicing of the steel cable (EK 31)during cutting, you have to tin the cable aroundthe cutting position with a copper bit or stronglytighten the cable with a wire. Shorten theelectrode cable with a metal cutting saw or acutting-off wheel by the requested length.

Carry out the adjustment. The instruction isunder "4.1 Adjustment“.

Filling openingInstall the electrode such that it does notprotrude directly into a strong filling stream.Should such an installation place be necessary,mount a suitable sheet above or in front of theelectrode e.g. L 80 x 8 DIN 1028, etc.

Humidity from outsideTo avoid humidity ingress, the connection line tothe electrode housing on vertically installedelectrodes should be looped directly behind thecable entry to the bottom so that rain andcondensation water can drain off.

This is mainly valid for mounting outside, inareas where humidity must be expected (e.g.by cleaning processes) or on cooled or heatedvessels (see fig. 2.3).

Cable entries

Fig. 2.3 Humidity

When mounting outside, on cooled vessels or inhumid areas where cleaning is made e.g. withsteam or high pressure, the seal of the cableentry is very important.

Use cable with a round cross-section area ofconductor and tighten the cable entry. Thecable entry is suitable for cable diameters of5 mm to 9 mm.

Metal vesselsNote that the mechanical connection of the


Fig. 2.4 Cable electrode in solids

Mounting

electrode is electrically conductive connectedwith vessel to ensure sufficient earth.

Use conductive seals such as e.g. copper, leadetc. Isolating measures such as covering thethread with Teflon tape can interrupt thenecessary electrical connection. In this caseuse the earth terminal on the housing toconnect the electrode to the vessel wall.

Non-conductive vesselsIn non-conductive vessels, e.g. plastic tanks,the second pole of the capacitor must beprovided separately, e.g. by a concentric tube.

When using a standard electrode, a suitableearth plate is necessary. Hence provide apossibly large earth plate, e.g. wire braidinglaminated into the vessel wall or metal foil whichis glued to the vessel. Connect the earth platewith the earth terminal on the housing.

Rod electrodeMount the rod electrode such that the electrodeprotrudes into the vessel. When mounting in atube or a socket, build-up can be caused whichcan influence the measurement. This isparticularly the cause with viscous or adhesiveproducts.

Cable electrodes in solidsDependent on the kind of solid and position orkind of filling, the cable electrode can "float“despite of the gravity weight. The electrode(cable) is pushed by the solid to the vessel wallor to the top and wrong measured values arecaused. This should be avoided withcontinuous level measurement.In this case use a fixing weight or a fixinginsulator to fasten the electrode (fig. 2.4).

When fastening the cable electrode avoid hightensile strenghts. An appropriate fixing springavoiding overloading of the cable is listed in ourpricelist as accessory.

Lateral installationWith electrodes, delivering continuousmeasured values, the electrode must only be


L

Fixing weight

Mounting

installed vertically. Should the installation fromtop not be possible, the electrodes can also bemounted laterally (fig. 2.5)

Under the accessory in our pricelist you find ascreening tube and a closing cone or a bentrod electrode by which the electrode can bealso mounted laterally. Choose the length (L) ofthe screening tube such that no productbridges can be caused between cable andvessel wall and that the electrode cable cannottouch the vessel wall due to prodcutmovements. Use a fixing weight or a fixinginsulator.

Fig. 2.5 Continuous electrodes


Mounting

Filling

d

d

d 10

d 10

Emptying

Fig. 2.6 Material cone, filling and emptying centered

d

3

1

2

d 6

Filling Emptying

1 Emptying2 Filling opening3 Capacitive

electrodeFig. 2.7 Material cone, filling centered, emptying laterally

Material coneNote when installing the electrodes into thevessel, that material cones can be caused withsolids which can change the switch point. Werecommend to choose an installation placewhere the electrode detects an average valueof the material cone.

According to the position of the filling andemptying opening in the vessel, the electrodemust be installed appropriately. To compensatethe measuring errors caused by the materialcone, you should install the electrode at adistance of d/6 from the vessel wall.

6 6


4321+-

80 2

6 4

Electrical connection

3 Electrical connection

3.1 Connection instructions

NoteSwitch off the power supply before startingconnection work.

Connect supply voltage according to thefollowing connection diagrams.

NoteIf strong electromagnetic interferences have tobe expected, we recommend to use screenedcable. The screening of the cable should onlybe earthed at one sensor end (electrode).

Generally connect the electrode with vesselground (PA). For this purpose there is a terminallaterally on the housing. This connection isadditionally for the mass reference potential aswell as to drain off electrostatic charges.

3.2 Wiring plan

NoteThe oscillator is independent of the electrodeand can be exchanged locally.

+

–4 … 20 mA

+ - + -

mAU = 12 … 36 V

Terminalssensor

analogue / digitalindicating instrument

UK UH

UA

4 … 20 mAU = 12 … 36 V

SPS

4321+ - + -

Ri < 250

+

–

with bridge: 12…36 Vwithout bridge:13 … 36 V



Skilled staffInstruments operated in Ex-areas must only bemounted by skilled staff. They must note themounting regulations and the supplied EC-typeapprovals and conformity certificates.

When capacitive electrodes are mounted onvessels which must be protected according toTRbF 100 no. 8, para.1 against inflammationdue to lightning, they have to be equipped withthe external overvoltage arrester typeB 62-36 G or the internal overvoltage protectionunit type CB 2-36.



A

B

2 1

E2

E1

A2

A1

2 1A

2A

1E

2E

1

Vessel with cathodic corrosion protection

(Ex)

-are

a Z

one

1N

ot (

Ex)

-are

aO

verv

olta

ge

pro

tect

ion

unit

mou

nted

on

osci

llato

r

Osc

illat

or

b)C

apac

itive

ele

ctro

des

with

ext

erna

l ove

rvol

tage

prot

ectio

n un

it

Scr

een

Cat

hod

ic ta

nk p

rote

ctio

n2

… 2

4 V

(ob

ject

vol

tag

e)

CB

2-36

CAP

E32(

H)E

X

Ext

erna

l ear

th te

rmin

al

Inte

rnal

ear

th te

rmin

alVe

ssel

Zon

e 0

Li, C

i of t

he o

scill

ator

with

over

volta

ge

pro

tect

ion

unit

Li =

0,2

7 m

HC

i = 8

,5 n

F

Con

trol r

oom

eith

er: O

verv

olta

ge

pro

tect

ion

inse

rtS

igna

lco

nd.

inst

ru-

men

tor sa

fety

bar

rier

Typ

B62

-36G

Li=

0,15

mH

Ci=

2,5

nF

Ove

rvol

tage

pro

tect

ion

inse

rt

Ove

rvol

tag

e p

rote

ctio

nin

stru

men

t in

met

alho

usin

g o

r p

last

icho

usin

g. T

he m

etal

hous

ing

mus

t be

mou

nted

ear

th fr

ee

Ext

erna

l ear

th te

rmin

al

Inte

rnal

ear

th te

rmin

al

Cat

hod

ic ta

nk p

rote

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n2

… 2

4 V

(ob

ject

vol

tag

e)

Isol

ated

line

min

.4

mm

2

Vess

elZ

one

0

Osc

illat

orLi

=0,

12 m

HC

i=6

nF

Scr

een

CA

PE

32(H

)Ex

Typ

B62

-36G

Li=

0,15

mH

Ci=

2,5

nF

Bet

wee

n co

ntro

l roo

m a

nd o

verv

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pro

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syst

em a

sui

tab

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able

mus

t be

used

, if

nece

ssar

y w

ith m

etal

cov

er o

r sc

reen

. Met

alco

ver

or s

cree

n -

if ne

cess

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- m

ust b

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lyco

nnec

ted

to th

e ov

ervo

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on th

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mus

t hav

e an

oute

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ion.

Tes

t vol

tag

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the

cab

le A

: ⊕ 5

00V

AC

Bet

wee

n ov

ervo

ltag

e p

rote

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n sy

stem

and

cap

aciti

ve e

lect

rod

e a

suita

ble

cab

le w

ith m

etal

cove

r, sc

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or

a su

itab

le c

able

with

met

alp

rote

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n tu

be

mus

t be

used

(m

etal

cov

er o

rp

rote

ctio

n tu

be

mus

t not

be

eart

hed

).Te

st v

olta

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of th

e ca

ble

B: ⊕

150

0 V

AC

a)C

apac

itive

ele

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des

with

inte

gral

ove

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prot

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n un

it ty

pe C

B 2

-36

A B



Vessel without cathodic corrosion protection

A

B

A2

A1

E2

E1

2 12 1

E2

E1

A2

A1

Ove

rvol

tag

ep

rote

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n un

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ount

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nos

cilla

tor

Osc

illat

or

CB

2-36

CAP

E32(

H)E

X

Vess

elZ

one

0

Osc

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orLi

=0,

12 m

HC

i=6

nF

Ext

erna

l ear

th te

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al

Inte

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th te

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al

Vess

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one

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32(H

)Ex

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Set-up

4 Set-up

4.1 General adjustment

With the set-up the electrode must be alreadyadjusted with the original medium.In certain cases also a dry adjustment can becarried out.

The electrode can be adjusted in three differentways:• with integrated oscillator• with operating software VEGA Visual

Operating (VVO from V. 2.30)• with HART®-handheld

CAP E 32 ExAdjustment - directly on the oscillator.

CAP E 32 H ExAdjustment - directly on the oscillator

- via PC with adjustmentprogram VVO1)

- via HART®-handheld

OscillatorThe capacitive electrodes EK can be directlyadjusted on the oscillators CAP E32 Ex andCAP E32 H Ex.All sensor basic functions can be carried outwith the two keys and the rotating switch.

PC with adjustment program VVO 1)

With the adjustment program VVO V. 2.30(VEGA Visual Operating) on the PC you canadjust the capacitive electrode in conjunctionwith oscillator CAP E 32 H Ex very comfortably.Beside the sensor basic functions, also additio-nal functions are available.

You require an interface adapter VEGACON-NECT 2, which you can connect to anyindividual position of the signal line or directlyon the sensor.

System requirements:- IBM-compatible PC with a free standard

interface. We recommend a PC with Pentium-processor with a clock frequency of100 MHz.

- Memory: 16 MB- Software requirements: Windows 95

HART®-handheldThe capacitive electrodes EK with oscillatorCAP E32 H Ex are suitable for HART®-protocolsand can be adjusted with a HART®-handheld.All relevant sensor functions are possible withthe HART®-standard menus. A manufacturerspecific DDD (Data-Device-Description) is notrequired.

1) When you want to adjust a sensor with the PC, youhave to connect the PC-lines on the signal lineoutside the Ex-zone.The intrinsic safety must be ensured with theconnection. Use a suitable interface converter e.g.VEGACONNECT 2


4321+-

80

2

6 4

4.2 Adjustment -OscillatorsCAP E32 Ex and CAP E32 H Ex

Set-up

Functional description

0 OperateBasic positionThe instrument should be in this position duringmeasurement. In mode Operate the actualmeasured value is transmitted. The plus andminus keys do not function.

1 Min. adjustmentThis function is used to carry out the min.adjustment. Empty the vessel to min. level(0 % - level).Push the plus and minus key together to set thecurrent value for the actual level to 4 mA.When you want to coordinate a certain currentvalue to a known level, you can modify thecurrent with the plus and minus keys. Everytime you push the key, the current value will bechanged in 10 µA-steps. When you keep thekey pushed, the value modifies with increasingspeed.Example: When you know that your vessel isfilled to 10 %, then you can enter under min.adjustment a value of 5,6 mA.

20 mA - 4 mA = 16 mA16 mA * 10% = 1,6 mA1,6 mA + 4 mA = 5,6 mA

It is recommended to connect an amperemeter,see 3.2 Electrical connection. You can monitorthe current value during modification. When youkeep the key pushed, the value changesautomatically and with increasing speed. Thedifference between min. and max. adjustmentshould be at least 20% or 3,2 mA.

(+/-) set 4 mA(+) increase current(-) lower current

2 Max. adjustment

Rotating switch (2)With the rotating switch (10 steps) you choosethe appropriate mode.As soon as you continue to turn the rotatingswitch, the modified value is taken over.

0 Operate1 Min. adjustment2 Max. adjustment3 Integration time4 Reverse characteristics5 Linearisation6 Sensor optimization7 Simulation current8 Reset9 Offset correction

Plus and minus keys (3 and 1)With the keys + and - you can modify the valuesof the parameters and choose out of severalpossibilities.When you push both keys together, the value ofthe appropriately chosen function is reset tofactory setting(except min./max. adjustment)

4321+ - + -

mA

U = 12 … 36 V

1 2 3

1 Minus switch2 Rotating switch3 Plus key


Set-up

You use this function to carry out the max.adjustment. Fill the vessel to max. level (100 %level). Push the plus and minus key together.You can set the current value for the actual levelto 20 mA.When you want to coordinate a certain currentvalue to a known level, you can modify thecurrent with the plus and minus keys. Each timeyou push the key, the current value changes in10 µA-steps.When you keep the key pushed, the valuechanges with raising speed.Example: When you know that your vessel isfilled to 90 % and should be filled to 100 %,then you can enter under the min. adjustment avalue of 18,4 mA.

20 mA - 4 mA = 16 mA16 mA * 90% = 14,4 mA14,4 mA + 4 mA = 18,4 mA

It is recommended to connect an amperemeter,see 3.2 Electrical connection. You can monitorthe current value during modification. When youkeep the key pushed, the value changesautomatically and with increasing speed. Thedifference between min. and max. adjustmentshould be at least 20% or 3,2 mA.

(+/-) set 20 mA(+) increase current(-) reduce current

3 Integration timeWhen you want to adjust the integration time(damping), set the rotating switch to position 3.With the plus and minus keys you can doubleor halve the value of the integration time stepby step. As a standrd feature an integrationtime of 0,5 seconds is adjusted. Count howoften you have pushed the key, so that you canadjust the time correctly. If you are not sure, setthe integration time to the preadjusted value of0,5 s by pushing both keys together. Thenrepeat the adjustment.After the adjusted integration time 63 % of themeasured value change are available at theoutput.The following integration times can be chosenon the oscillator: 0,5; 1; 2; 4; 8; 16; 32; 64; 128;256 (s)

(+/-) 0,5 s(+) increase time

(-) reduce timeExample: To adjust an integration time of 8seconds, you have to push the key "+“ 4 times.

4 Reverse characteristicsWith this function you can reverse thecharacteristics of the current output. Thereverse characteristics is visible on theamperemeter.

(+/-) 4 ... 20 mA(-) 4 ... 20 mA(+) 20 ... 4 mA

5 LinearisationWith this function you can activate the savedlinearisation curve. As a standard feature thecurve for cylindrical tank is saved. OnCAP E 32 H you can enter other linearisationcurves via VVO. In this case there is nopreadjustment necessary on the oscillator.

(+/-) linearisation off(+) linearisation on(-) linearisation off

6 Sensor optimizationMode 1 = Phase angle 90 °Mode 1 is a pure capacitance measurement,the ohmic resistance is not considered in themeasuring result.Application:- standard adjustment- non-conductive liquids up to approx. 50 µS- compensation of the resistance changes in

liquids- generally on partly insulated electrodes in

liquids- non-conductive solids without humidity

contents- with bad product earth- with electrodes in conjunction with a

concentric tube- in non-conductive vessels with ground plate

provided from outsideMode 2 = Phase angle 45 °The capacitance and the ohmic resistance aremeasured separately, the capacitance value is


Set-up

corrected by calculation with the ohmicresistance, so that measuring errors due tobuild-up or change in the product humidity arecompensated.Application:- high conductivity products- adhesive, conductive products- solids with fluctuation humidity contents

For use in conductive, adhesive liquids, asuitable electrode of type EK 24 or EL 24should be used.

(+/-) Mode 1 (90°)(+) Mode 1 (90°)(-) Mode 2 (45°)

7 Simulation currentWith this function you can simulate the level. Assoon as you set the rotating switch to position 7,the simulation is active. The actual current valueof the actual level is taken over for simulation.With the plus and minus keys you can modifythe current value in a range of 3,8 mA to 22 mA.Every time you push the key, the current valuechanges in 10 µA-steps.When you keep the key pushed, the valuemodifies automatically and with increasingspeed.

(+) increase current(-) reduce current

8 ResetAll adjusted values are reset to factory setting.Note that also the adjustment is deleted. Tagnumber, measurement loop designation etc.from the HART® or VVO-adjustment howeverremain unchanged.

(+/-) Factory setting

Factory setting0 Operate ---1 Min. adjustment 4 mA at 0 pF

2 Max. adjustment 20 mA at 3000 pF3 Integration time 0,5 s4 Reverse characteristics 4 ... 20 mA5 Linearisation off6 Sensor optimization mode 1 (90°)7 Simulation current off8 Reset ---9 Offset correction already savedvalues

remain

9 Offset correctionThis function is required when an adjustmentshould be carried out in m. This is only possiblewith an oscillator CAP E 32 H Ex. With thisfunction the initial capacitance in theelectronics is saved. Requirement is that theelectrode is mounted in the vessel andcompletely uncovered.

On electrodes with concentric tube this functionis already carried out as factory setting as thevessel does not influence the measurement.The offset correction must only be repeatedwhen exchanging the oscillator.

(+/–) Initial capacitance is saved


4.3 Adjustment with VVO

When an oscillator CAP E 32 H Ex is mounted,the electrode can be also adjusted via a PCwith adjustment software VVO (from version2.30).

When you get no sensor connection, check thefollowing:- The supply voltage must be at least 20 V.- When VEGACONNECT 2 is directly

connected to the sensor line, the load resistormust be 250 ... 350 Ohm.

- You have to use a VEGACONNECT 2. Olderversions of VEGACONNECT are notcompatible.

The following adjustment steps are described intheir sequence and should be carried out in thissequence with the initial set-up.

Further information are stated in the operatinginstruction of the adjustment program VEGAVisual Operating (VVO).

Configuration

Display Diagnostics Instrument data Configuration Services Quit Help

Measuring systemMeasurement loop >Program > Language

User accessCommunication

Under the menu point Configuration you canchoose the following functions:• Measuring system• Measurement loop• Program

The electrode is preadjusted by VEGA. Themeasuring system must only be re-configuredwhen the oscillator is exchanged.Measuring system

Set-up

NoteWhen the resistance of the voltage supply isless than 250 Ω , a resistor must be looped intothe signal/connection line during adjustment.The digital adjustment and communicationsignals would be shortcircuited via too smallresistors e.g. of the supply current source of theprocessing system so that the sensorcommunication would not be ensured. Theeasiest way would be to connect the requiredadjustment resistor in parallel to the connectionsockets of the HART®-handheld (see fig. 1).

• Switch on the power supply of the connectedsensor.

• Start the adjustmetn software VVO (VEGAVisual Operating) on your PC.

• In the entrance window you choose with thearrow keys or the mouse the point Planningand click to OK.You should only choose Planning when youare authorized to modify instrumentparameters. Otherwise choose Operator orMaintenance.In the window User identification you areasked for the name and the password.

• For set-up (planning) enter under name:VEGA and under password again: VEGA. Itdoes not matter if you use capital or smallletters.

VVO determines automatically the kind of theconnected sensor and shows a little later towhich sensor the connection exists.

4321+ - + - PC with VVO

mA

approx.250 Ω

VEGACONNECT 2


In this window you can choose your appropriateelectrode. You can see the electrode type onthe type plate of the instrument.Choose the correct electrode out of the list, e.g.EK 21 14 mm PTFE. In front of the listedelectrodes you see the number of the electrodetype. The number to your electrode is stated onthe type plate. See also 1.6 Type plate. Whenyour electrode is not stated in the list, choose´not configured´. Push the button for saving toconfirm the choice.

In this window you can carry out additionally areset. All adjusted values are then reset tofactory setting. Note that also the adjustmentwill be deleted.Tag number, measurement loop designationetc. from the HART® or VVO-adjustmenthowever remain unchanged.

Factory Setting0 Operate ---1 Min. adjustment 4 mA at 0 pF2 Max. adjustment 20 mA at 3000 pF3 Integration time 0,5 s4 Reverse characteristics 4 ... 20 mA5 Linearisation off6 Sensor optimization mode 1 (90°)7 Simulation current off8 Reset ---9 Offset correction already saved

values remain

Measurement loopIn this window you can make the measurement

loop designation.

Measurement loop no. (Sensor-TAG)In this field you can enter a measurement loopnumber, e.g. Tank 15 - 3. Max. 16 positions areavailable.

Measurement loop descriptionIn this field you can specify your measurementloop in detail, e.g. level measurement - cleaningsolution.Up to 80 positions can be entered.

ApplicationFor capacitive electrodes Level measurement isfixed adjusted and cannot be modified.

ProgramIn this menu point you can modify theadjustments for the program.

LanguageHere you can modify the language of the pro-gram.

User accessWith this function you can modify the user nameand the password or deactivate the passwordrequest.

CommunicationYou can determine the adjustments for datatransmission.

OptionsIn this function, programm adjustments such as

Set-up


activate sound, backup etc. are available.

Instrument data


Parameter adjustment

Under the menu point instrument data you canchoose the function:• Parameter adjustment.

Parameter adjustmentThe following functions are available:

- adjustment- conditioning- outputs- sensor optimization- additional functions

Adjustment - Min./Max. adjustmentWith this function you can adjust the electrode(min./max. adjustment).You can choose if you want to carry out theadjustment with or without medium.

Adjustment with mediumMin. adjustmentThere must be min. level in the vessel. Whenyou push the button Save, the current value forthe actual min. level is set to 4 mA.You can also coordinate a certain percentagevalue to a known level.When you know e.g. that your vessel is filled to10 %, this can be entered under min.adjustment.

Max. adjustmentThere must be max. level in the vessel. Whenyou push the button Save, the current value forthe actual max. level is set to 20 mA.You can also coordinate a certain percentagevalue to a known level.When you know e.g. that your vessel is filled to90 %, this can be entered under max.adjustment.

The difference between min. and max.adjustment should be at least 20% or 3,2 mA.

Adjustment without medium (dryadjustment)

By means of the adjustment software VVO youcan carry out under certain requirements anadjustment without medium.

The requirements for an adjustment in m are:In conductive medium:

- electrode is fully insulated

For conductivity the following criteria are valid:

Mode 1 (90°) Mode 2 (45°)with conc.tube > 50 µS/cm >150 µS/cmwithout conc. tube >100 µS/cm >300 µS/cm

In non-conductive medium:- concentric tube electrode- you know the DK-value of the medium

When you know already the electrodecapacitance of a second similar measurementloop (same electrode, same installationconditions, same medium) you can also carryout the dry adjustment in pF.

First carry out an offset correction withuncovered electrode (only with adjustment in m:

Set-up


Instrument data - Parameter adjustment - Addi-tional functions).Move to function Adjustment without medium.You can choose if you want to carry out theadjustment in pF or in m. When you havechosen the adjustment in m, you have to enterwhether your medium is conductive or non-conductive. When the medium is non-conductive you must additionally enter thedielectric constant figure.

In the previous table you can see which criteriaare valid for the conductivity with the capacitivemeasurement and if you have to chooseConductive or Non-conductive.

When you have chosen m, you can coordinateto the current or percentage values anappropriate value in metres.Example

0% = 4,00 mA = 0,2 m100 % = 20,00 mA = 3,2 m

When you have chosen pF, you can coordinateto the current or percentage values anappropriate value in pico-faradExample

0% = 4,00 mA = 97,2 pF100 % = 20,00 mA = 1428,0 pF

When you push the button OK, the values aretaken over for adjustment.

ConditioningIn this window the following functions areavailable:

- scaling- linearisation- integration time

ScalingWith this command you can scale the

measured value for your indication.You can choose out of 16 volume, height andmass units or just dimensionless.The indication values can be between -10000and +10000.

LinearisationIn this window you can linearize unlinearvessels such as e.g. cylindrical tanks.The following linearisation curves are available:- linear- cylindrical tank- spherical tank- user programmable curve

On oscillator CAP E32 H you can enter under"user programmable curve“ also ownlinearisation curves for special vessels, e.g.vertical cylindrical tanks with large conicaloutlet.Push the button Edit. You can enter the valuepairs (percentage value - volume value) for 32index markers.Push the button Transfer, to enquire furtherlinearisation curves.

Integration timeChoose this function when you want to adjustan integration time (damping).The possible integration time is between 0,5and 300 seconds. As a standard feature anintegration time of 0,5 seconds is adjusted. Foran integration time of 0,5 s you have to enterthe value 0.After the adjusted integration time, a measuredvalue change of 63 % is available on theoutput.

Output - Current outputIn this window you can change thepreadjustments for the current output. Push thebutton Save to tranfer the modified values.

Failure modeThe capacitive sensor delivers in case of failure

Set-up


generally 22 mA. This value cannot bemodified.

The current output corresponds toThe parameter of the current output is alwayspercent with capacitive electrodes.

Invert current outputWith this function you can reverse thecharacteristics of the current output (4 ... 20 or20 ... 4 mA).

Sensor optimisationIn this window you can adjust the mode of thesensor.Hence the phase angle of the phase selectiveadmittance processing (PSA) is modified."Mode 1“ is preadjusted.

Mode 1 = Phase angle 90 °Mode 1 is a pure capacitance measurement,the ohmic resistance is not considered in themeasuring result.Application:- standard adjustment- non-conductive liquids up to approx. 500 µS- compensation of resistance changes in

liquids- generally with partly insulated electrodes in

liquids- non-conductive solids without humidity

contents- in case of bad earth of the medium- with electrodes in conjunction with a

concentric tube- in non-conductive vessels with earth plate

provided from outside.

Mode 2 = Phase angle 45 °The capacitance and the ohmic resistance aremeasured separately, the capacitance value iscorrected by calculation with the ohmicresistance, so that measuring errors byconductive build-up or modifications of theproduct humity are compensated.Application:- high conductivity products- adhesive, conductive products- solids with fluctuating humidity contents

Additional functionsOffset correction

This function is required when an adjustmentshould be carried out in m. This is only possiblein conjunection with oscillatorCAP E 32 H Ex. With this function the initialcapacitance is saved in the electronics.Requirement is that the electrode is mounted inthe vessel and completely uncovered.The offset correction is necessary when anadjustment should be carried out withoutmedium.On electrodes with concentric tube, thisfunction is already carried out as factory settingas the vessel does not influence themeasurement.The offset correction must only be repeatedwhen the oscillator is exchanged.

Display


Display of measured value

Under the menu point display you can choosethe function:• Display of measured value.

Display of measured valueIn this window the actual measured value isdisplayed digitally and as bargraph.The upper bar shows the actual measuredvalue in percent, pF or scaled in theappropriate unit.The lower bar shows the actual sensor currentvalue in mA.

Diagnostics


StatusSimulation

Under the menu point diagnostics you canchoose the following functions:• status• simulation

StatusThis function is not available.

Set-up


SimulationWith this function you can simulate a level. Pushthe start button to activate the simulation. Shiftthe scrollbar to the requested current value orenter a certrain current value. The scaledindication bar is modified in parallel.Push the button Stop to interrupt the simulation.When you quit the window Simulation, thesimulation is automatically interrupted.

Services


PrintView

Backup >Restore configuration >Edit database

User levelConnection F8Modem F7

Signal conditioning instrumentsSensors

Under the menu point services you can choosethe following functions:• print• view• backup• restore configuration• edit database• user level• connection• modem

PrintWith this function you can print a protocol withthe adjustments of the sensor.

ViewWith this function you can have the protocolwith the sensor adjustments displayed.

Backup - SensorsIn this window you can save the adjustments ofthe sensor in a database.

Restore configuration - SensorsIn this window you can enquire the adjustmentsof the sensor from the database.

Edit databaseIn this window you can edit the saved sensordata of the database.

Set-up

User levelIn this window you can choose the user level.The following user levels are available:

- operator- maintenance- planning

OperatorThis user level is for the operator. Indicationor print out of measured values and sensordata. For this level there is no passwordrequired.

MaintenanceWhen you use the level maintenance, you canchoose all functions except configuration.The password for this level is: VEGA.

PlanningWhen you choose the level planning allfunctions are accessible.The password for the planning level are:VEGA - VEGA.

ConnectionWith this function you can start a newconnection. This function can also be activatedwith key F8.

ModemThis window enables the adjustments for datatransmission with a modem. This function canalso be activated with key F7.No special requirements necessary for themodem used.


4.4 Adjustment with HART ®-handheld

The capacitive electrodes EK with oscillatorCAP E32 H Ex are suitable for HART®-protocolsand can be adjusted with a HART®-handheld.

All relevant sensor functions can be carried outwith the HART®-standard menus. Amanufacturer specific DDD (Data-Device-Description) is not necessary.Connect the HART®-handheld to the signal lineafter you have connected the sensor to thesupply voltage.

Multidrop-operationWith the HART®-handheld the Multidrop-operation can be chosen.Hence several HART®-sensors can becomposed on one two-wire line.The sensor provides beside the 4 … 20 mA-signal also a digital (HART®) level signal.• When you enter address 0 (factory setting),

the sensor takes a level independent 4 … 20mA-current and delivers a digital (HART®)level signal. In this line e.g. also an indicatinginstrument (4 … 20 mA) can be looped.

• When you enter an address from 1 to 15, thesensor takes permanently a current of 4 mAand delivers a digital (HART®) level signal.

Burst-operation

4321+ - + -

mA

250 Ω

HART®-handheld

Set-up

Normally the sensor signals the measuredvalues to the processing unit only on request.When you switch on Burst-operation, the sensorsignals the measured values without request.

Connection to a VEGA-signal conditioninginstrument(fig. 3, page 36)When you operate a sensor suitable for HART®-

on a VEGA-signal conditioning instrument, youhave to provide the sensor connection on thesignal conditioning instrument with a resistor ofthe following table for the duration of theHART®-adjustment.

VEGA-signal conditioninginstrument Rx

VEGAMET 513, 514, 515, 602VEGATRENN 544VEGATOR 521…527 50 … 100 Ω

VEGAMET 614 no additionalVEGADIS 371 resistor

required

VEGAMET 601 200 … 250 Ω

VEGASEL 643 150 … 200 Ω

VEGAMET 513 S4, 514 S4515 S4 100 … 150 Ω

NoteWhen the resistor of the supply voltage is lessthan 250 Ω , a resistor must be looped into thesignal/connection line during adjustment. Thedigital adjustment and communication signalswould be shortcircuited via too small resistore.g. of the current source or the processingsystem so that the sensor communicationwould no more be ensured. The easiest waywould be to connect the required resistor inparallel to the socket of the HART®-handheld(see fig. 1, page 36).


Ri > 250

+

–

Fig. 2

DCS

Fig. 3

+

–

VEGALOG VEGAMET

250

Ri < 250

+

–

Fig. 1

DCS

Set-up

250 Ω


Set-up

Adjustment steps

On the following pages you see the menu planto the HART®-handheld in relation withcapacitive electrodes.The most important adjustment steps aremarked in the menu plan with the figuresA … D.

General information to the HART®-handheld:

When you enter or modify parameters, youhave to push the key "ENTER“. Hence theadjustment is saved in the handheld but not in

the sensor itself.After you have pushed "ENTER“, you have topush "SEND“, to transfer the adjustment to the

sensor.After pushing of "SEND“ a warning is displayed.When you push "OK“, the adjustment istransmitted to the sensor.

Another safety enquiry asks you to switch overyour system from manual to automaticoperation. Push "OK“

With "HOME“ you reach again the initial menu.

Generic: SENSORPV LRV

0.000 m 10.000

HELP DEL ABORT ENTER

4.1(5.1)

Empty adjustment withoutmedium

Generic: SENSOR1 PV LRV2 PV URV

HELP SEND HOME

Generic: SENSOR- WARNING-

Pressing ”OK“ willchange device output.

Put loop in manual

ABORT OK

Generic: SENSOR

- WARNING-

Return control loop toautomatic control.

OK

Generic: SENSOR1 PV LRV2 PV URV

HELP HOME


Set-up

HART®-menu plan

A

1

2

3

4

5

1.1

4.1(5.1)

4.2(5.2)

Less importantmenu windows

Not required,unimportant or blockedmenu windows

Important andnecessary menuwindows

B

Switch on:

after approx.20 s

Set-up the sensor in the sequence ofthe figures A, B, C and D (adjustmentwithout medium).In case of adjustment with medium, set-up the sensor in the sequence A1, B1,C and D.

continue like under Afigure 4.1(5.1)

Empty adjustmentwithout medium

Fulladjustmentwithoutmedium

continue under figure 4

Hart Communicator

Self Testin Progress

Firmware Rev: F2.2Module Rev: 3.6

01992-96 FRSI

Generic: SensorPV

2,56 m

HELP EXIT

Generic: SensorDevice setup

1 Process variables2 Diag/Service3 Basic setup4 Detailed setup5 Review

SAVE HOME

Generic: SensorPV URV

100.000 m 90.300

HELP DEL ESC ENTER

Generic: SensorProcess variables

1 Snsr 2,56 m2 AI % rnge3 AO1

HELP SAVE HOME

Generic: SensorOnline(Generic)

1 Device setup2 PV3 PV AO4 PV LRV5 URV

HELP SAVE

Generic: SensorAO1

16.952 mA

HELP EXIT

Generic: Sensor1 PV LRV2 URV

HELP SEND HOME

Generic: SensorPV LRV

0.000 m10.000

HELP DEL ESC ENTER

Generic: Sensor1 PV LRV2 URV

HELP SEND HOME


Set-up

blocked menu. Thefollowing window isdisplayed but notsupported by the sensor.Saving of adjustmentscarried out here, is hencenot possible

6 PV Damping

1.1.3

1.2

1.3

1.41.5

1.1.2

1.1.1

1.3.1

1.3.2

1.3.3

1.3.4

1.3.6

6 Write protect None7 Descriptor8 Message9 PV Snsr s/n

Final asmbly numRevision’s

1.2.3

1.2.2

Individual current values fortest purposes (simulation ofmeasured values)

Empty and fulladjustmentwith medium(see nextpage)

seenextpage

see nextpage

C

D new enteredmeasuring loopdesignation to beconfirmed withENTER and SEND

seenextpage

Transmission function(linear)

Confirmsafetyenquiry

A1B1

Generic: SensorDetailed setup

1 Sensors2 Signal condition3 Output condition4 Device information

SAVE HOME

Generic: SensorPV

0,2 m

HELP EXIT

Generic: SensorPV % rnge

8.945 %

HELP EXIT

Generic: SensorAO1

5.952 mA

HELP EXIT Generic: SensorPV Snsr unitm

mbblincm

ESC ENTER

Generic. SensorRange values

1 PV LRV2 URV3 PV LSL4 USL

HELP HOME

Generic: SensorPV Damp

1.000 s2 .000 s

HELP DEL ESC ENTER

Generic: SensorBasic setup

1 Tag2 PV Unit3 Range values4 Device information5 PV Xfer fnctn

HELP SAVE HOME

Generic: SensorReview

ModelGeneric

HELP PREV NEXT EXIT

Generic: SensorCalibration

1 Apply values2 Enter values

HELP SAVE HOME

Generic: SensorChoose analog output level

1 4 mA2 20 mA3 Other4 End

ABORT ENTER

Generic: SensorDiag/Service

1 Test device2 Loop test3 Calibration4 D/A trim

SAVE HOME

Generic: SensorDevice information

1 Distributor2 Model Generic3 Dev id4 Tag5 Date 10/01/97

HELP SAVE HOME

Generic: SensorTag

SensorSensor

HELP DEL ESC ENTER


Set-up

1.3.3

1.3.4

6 Write protect None7 Descriptor8 Message9 PV Snsr s/n

Final asmbly numRevision’s

1.4

like menu 1.3.4

1.2.3.2

as display 4.1as display 4.2

1.2.3

1.2.3.1Confirmsafetyenquiry

Indication of sensormeas. range limits

Indication of sensormeasuring range limits

(1.3.4.5) Date

Individual text

Measured valueChange unit

Info on lower and upper meas.range limit as well as the min.span (also sensorcharacteristics values)

1.4.1

1.4.2

Adjustment of the integration timeAdjustment of zero and span

Adjustment of zero and spanlinear

Level indication in % of theadjusted span

1.4.3

Menu field with broken line:Repetition from previous page

1.3.3.1

1.3.3.2

Indication of the sensor serial number (as menu window 1.3.4.3)

unknown (Unknown Enumerator)General

Individual text

None

Empty adjustment withmedium

Full adjustment withmedium

(1.3.4.4) Measurement loop designation as under 1.3.1(1.3.4.3) Indication of the sensor serial number

A1

B1

1.2.3.1

HART®-menu plan (continuation)

Generic: SensorRange values

1 PV LRV2 PV URV3 PV LSL4 USL

HELP HOME

Generic: SensorDevice information

1 Distributor2 Model Generic3 Dev id4 Tag5 Date 01/01/97

HELP SAVE HOME

Generic: SensorDetailed setup

1 Sensors2 Signal condition3 Output condition4 Device information

SAVE HOME

Generic: SensorPV LRV

0.000 mbar10.000

HELP DEL ESC ENTERGeneric: SensorPV URV

100.000 m 90.300

HELP DEL ESC ENTER

Generic: SensorSensors

1 PV2 PV Snsr unit3 Sensor information

HELP SAVE HOME

Generic: SensorSignal condition

1 Snsr Damp 1.000 s2 URV3 AI LRV4 Xfer fnctn Linear5 AI % rnge

HELP SAVE HOME

Generic: SensorOutput condition

1 Analog output2 HART output

SAVE HOME

Generic: SensorEnter values

1 PV LRV 2 URV 3 PV USL4 PV LSL

HELP SEND HOME

Generic: SensorCalibration

1 Apply values2 Enter values

HELP SAVE HOME Generic: SensorApply new 20 mA input

ABBR. OK

Generic: SensorApply new 4 mA input

ABORT OK

Generic: SensorSet the:

1 4 mA2 20 mA3 Exit

ABORTENTER


Set-up

1.2.3.1.1

1.2.3.1.2

Note:After adjustment of a parameter push ”ENTER“ and then ”SEND“.Confirm the message to switch over the meas. circuit to manual operation with”OK“.Confirm the message to change over to automatic operation also with ”OK“.Only then the adjustment is written in the sensor and is effective.

Menu windows are displayed but notsupported by the sensor.Saving of the adjustments carried outhere, is hence not possible.

1.4.3.1.3

1.4.3.1.2

High: Current output goes to < 3,6mA

in case of failure

1.4.3.2

1.4.3.1

OffOnNot usedNoneUnknownSpecial

Sensor signals measured values onlyupon requestSensor signals measured valuesunsolicited

Choice is not supported

1.4.3.2.3

1.4.3.2.4

Burst mode should be off

Choice is not supported

1.2.3.1.1.1

1.2.3.1.2.1

1.4.3.1.3 1.4.3.1.3.1

Generic: SensorCurrent appliedprocess value: 10.945mbar

1 Set as 4 mA value2 Read new value3 Leave as found

ABORT ENTER

Generic: SensorCurrent appliedprosess value :85.281mbar

1 Set as 20 mA value2 Read new value3 Leave as found

ABORT ENTER

Generic: SensorChoose analog outputlevel

1 4 mA2 20 mA3 Other4 End

ABORTENTER

Generic: SensorWARN - Loop should beremoved fromautomatic control

ABORT OK


1 4 mA2 20 mA3 Exit

ABORT ENTER


1 4 mA2 20 mA3 EXIT

ABORT ENTER

Generic: SensorAO Alrm typHi

EXIT

Generic: SensorHART output

1 Poll addr2 Num req preams3 Burst mode4 Burst option

HELP SAVE HOME

Generic: SensorAnalog output

1 AO1 13.4672 AO Alrm typ3 Loop test4 D/A trim5 Scaled D/A trim

HELP SAVE HOME

Generic: SensorFld dev output isfixed at 4.000 mA

ABORT OK

Generic: SensorBurst modeOff

OffOnNot UsedNone

ESC ENTER

Generic: SensorBurst option*********

PV% range/currentProcess vars/crnt

HELP ESC ENTER


Diagnosis

5 Diagnosis

5.1 Simulation

To simulate a certain filling, you can enquire thefunction simulation on the oscillator, in theadjustment program VVO or in the HART®--handheld.Then you simulate a certain current. Note thatconnected instruments such as e.g. a DCSreact according to their adjustment and triggerif necessary alarm functions or activate systemfunctions.

5.2 Maintenance

The instrument is maintenance free.

5.3 Repair

Due to safety and guarantee reasons repairwork beside the wiring must only be made byVEGA-staff.

In case of a defect, please return theappropriate instrument with a short descriptionof the error to our repair department.

Failures are shortterm malfunctions of theinstrument which are caused by wrongadjustment or defects on the sensor or theconnection lines.

Failures, possible reasons and their removal arestated under "5.4 Failure removal“.


28

30

32

+

–+

–

+

–

mA V

4 … 20 mA 12 … 20 V

Sensor

Diagnosis

5.4 Failure removal

Failure Measure, failure removalCurrent value Check the sensor inputs on the following failures:⊕ 22 mA - shortcircuit on the input

- sensor not correctly connectedsensor line interrupted- supply voltage too low or too high

Measure the current on the connection line to the sensor.

The terminal voltage on the sensor in standard condition is at least 12 V.

Note with Ex-systems that the Ex-protection is not influenced bythe measuring instruments.

Current value > 22 mA- Check all connections and the connection line to the sensor.- Loosen the two small screws with a screwdriver and remove the

oscillator out of the plug connection.- Measure the current.

• When the current value remains > 22 mA, the oscillator is defect.Exchange the oscillator.

• When the current value is < 22 mA, the electrode is defect. Returnthe electrode for repair.

z.B. VEGATOR

12 … 36 mA


Diagnosis

Failure Measures, failure removalSensor defect, Test of the internal connections:measurement does • Loosen the 4 screws of the housing cover with a screwdriver andnot react to level remove the housing cover.changes • Loosen the two small screws with a screwdriver and pull the oscillator

out of the housing.• Measure with an Ohm-Meter (range MΩ) the resistance values between the following contacts:

CM - Meas. capacitor

4

6CM

1 M

Screen

Contact 4 against middle pin (1)The resistor must be 1 MΩ .If the resistor is less, this means humidity in the housing or a failure in theelectrode isolation. A possible reason could be a not isolated electrodewhich is used in conductive (humid) product.If the resistor is higher or if the connection is interrupted, the reason ismainly a bonding failure in the adapter plate or a defect resistor due tostrong electrostatic discharge.In both cases the electrode must be repaired at VEGA.


Diagnosis

Contact 4 against vesselThe connection between contact 4 and the metal vessel (not instrumenthexagon or electrode flange) should be as good as possible. Measure withan ohmmeter (range very low) the resistance value between contact 4 andthe vessel.• Shortcircuit (0 … 3 Ω ), optimum connection• Resistance > 3 Ω

- corrosion on the mounting boss or flange- probably the mounting boss was covered with Teflon tape or similar

Check the connection to the vessel. If there is no connection, you canconnect a line from the earth terminal outside to the vessel.Note that coated flanges must be in any case connected via the earthterminal to the vessel.

Contact 4 against 6In case of values > 3 Ω there is a defect.

When you cannot find a failure in the electrode, then exchange theoscillator against a similar replacement type (if available) or send theelectrode for repair to VEGA.After insertion of the new electronics, carry out an adjustment.See 4 Set-up.

VVO-failure messageMeas. value invalid

Measured value invalidThe actual measured value is not within the valid measuring range.Reasons can be e.g. extreme modifications of the dielectric constant valueor wrong adjustments.Modify the actual measuring conditions.


Diagnosis

Instrument failureNo failure detected on the sensor.

Possible reasons are:- supply voltage outside the tolerance- defect oscillator- damage of the electrode or the isolation- electrode shortcircuited with the vessel wall

• Separate the sensor from the supply voltage and then connect voltageagain (cold start).

• If the fault signal does not extinguish, check the sensor line and thecorrect supply voltage.

• If the fault signal does not extinguish, check the sensor on damages.If you cannot detect any failure, call our service department.

VVO-failure messageInstrument failure


Notes

HiTECH Technologies, Inc. 301 Oxford Valley Road - Building 505

Yardley, PA 19067-7706 Tel: 215. 321. 6012; Fax: 215. 321. 6067

Tech Support (Toll Free) 866-DrLevel or 888-NIVELCO Email: [email protected] or [email protected] Web Site: www.DrLevel.com or www.hitechtech.com

A TECHNOLOGY FOR EVERY LEVEL APPLICATION

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