VEGA Conductive electrodes User Manual

Operating Instruction

Conductive electrodes

Level and Pressure

100

532 Ex

Safety information

The described module must only be installed and operated as described in this operating instruction. Please note that other action can cause damage for which VEGA does not take responsibility.

2 Conductive measuring system

Contents

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

1 Product description

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

1.2 Types and version ............................................................... 4

1.3 Technical data....................................................................... 5

1.4 Dimensions ......................................................................... 14

1.5 Approvals ........................................................................... 18

2 Mounting instructions

2.1 Conductive electrodes ...................................................... 19

2.2 VEGATOR 256C ................................................................. 20

2.3 VEGATOR 532 Ex ............................................................... 20

2.4 VEGATOR 631 Ex ............................................................... 22

3 Electrical connection

3.1 VEGATOR 256C ................................................................. 23

3.2 VEGATOR 532 Ex ............................................................... 23

3.3 VEGATOR 631 Ex ............................................................... 25

4 Set-up

4.1 VEGATOR 256C ................................................................. 27

4.2 VEGATOR 532 Ex ............................................................... 28

4.3 VEGATOR 631 Ex ............................................................... 32

5 Diagnosis

5.1 Fault signal on VEGATOR 532 Ex ..................................... 36

5.2 Fault signal on VEGATOR 631 Ex ..................................... 37

Conductive measuring system 3

1 Product description

Product description

1.1 Function and configuration

The conductive measuring principle is used for level detection of conductive liquids.

Function

When the probe (s) is covered by the medium, conductive electrodes detect the product resistance.

A low alternating current flows which is measured by the electronics of the signal conditioning instrument on amplitude and phase position and converted into a switching command.

The switching signal is determined by the length or the mounting position of the appropriate electrode (s).

Configuration

One or two conductive electrodes and a signal conditioning instrument VEGATOR 256C, 532 Ex or 631 Ex are required to implement a measuring system.

1.2 Types and version

VEGATOR 256C and electrode

Application:

- level detection, pump control (Min-Max) Series:

- module unit Power supply:

- 200 … 250 V AC

- 24 V, 42 V, 48 V, 100 … 130 V AC Input:

- 1 channel for probes with 1 … 3 electrodes Output:

- 1 relay (spdt)

VEGATOR 532 Ex and electrode

Application:

- 2 level detections, pump controls (Min-Max)

Series:

- 19"-module card, 5 TE

Power supply:

- 20 … 53 V AC

- 20 … 72 V DC

Inputs:

- 2 channels for probes with 1 … 5 electrodes

Outputs:

- 2 relays (1 spdt each)

- 2 transistors

Classification:

- [EEx ia] IIC

Approvals:

- CENELEC

- WHG

Fault monitoring:

- detection of line break

VEGATOR 631 Ex and electrode

Application:

- level detection, pump control (Min-Max)

Series:

- module unit

Power supply:

- 20 … 250 V AC

- 20 … 72 V DC

Input:

- 1 channel for probes with 1 … 3 electrodes

Output:

- 1 relay (1 spdt)

- 1 transistor

Classification:

- [EEx ia] IIC

Approvals:

- CENELEC

- WHG

Fault monitoring:

- detection of line break

4 Conductive measuring system

Product description

1.3 Technical data

Conductive electrodes

Conductive electrode type EL 1 and EL 2

Material

- connection housing 1.4571

- thread 1.4571

- welded socket (only with type EL 2) 1.4571

- rod electrode 1.4571 or Hastelloy C4

- isolation of the rod electrode PTFE Size of the thread G Length of the rod electrode

- type EL 1 40 … 4000 mm

- type EL 2 60 … 2000 mm Protection IP 67 Temperature range -50°C … +130°C Max. permissible vessel pressure 63 bar Electrical connection Pg 11 Basic weight

- type EL 1 approx. 0,4 kg

- type EL 2 approx. 0,7 kg Additional weight of the rod electrode approx. 0,04 kg per 100 mm

Conductive rod electrode type EL 1 Ex and EL 2 Ex

Temperature range -20°C … +100°C Classification EEx ia IIC T6 Max. permissible ambient temperature

- temperature class T6 85°C

- temperature class T5 100°C all other technical data like EL 1 and EL 2

/2 A

Conductive multiple rod electrode type EL 3 (2 … 5 rod electrodes)

Material

- connection housing 1.4571

- thread 1.4571

- rod electrodes 1.4571, Hastelloy C4 or Titanium

- isolation of the rod electrodes PTFE

- distance holder PP Size of the thread G 1

/2 A Length of the rod electrodes 100 … 4000 mm Number of rod electrodes 2 … 5 Protection IP 67 Temperature range -50°C … +130°C Max. permissible vessel pressure 63 bar Electrical connection Pg 16 Basic weight approx. 0,9 kg Additional weight of the rod electrodes approx. 0,04 kg per 100 mm

Conductive measuring system 5

Conductive multiple rod electrode type EL 3 Ex (2 … 5 rod electrodes)

Temperature range -20°C … +100°C Classification EEx ia IIC T6 Max. permissible ambient temperature

- temperature class T6 85°C

- temperature class T5 100°C all other technical data like type EL 3

Conductive multiple rod electrode type EL 4 (2 … 5 rod electrodes)

Material

- connection housing PP

- thread PP

- rod electrodes 1.4571, Hastelloy C4 or Titanium

- isolation of the rod electrodes PP

- distance holder PP Size of the thread G 1

/2 A Length of the rod electrodes 100 … 4000 mm Number of rod electrodes 2 … 5 Protection IP 67 Temperature range -20°C … +100°C Max. permissible vessel pressure 6 bar Electrical connection Pg 16 Basic weight approx. 0,4 kg Additional weight of the rod electrodes approx. 0,04 kg per 100 mm

Conductive multiple cable electrode type EL 5 (2 … 5 cable electrodes)

Material

- connection housing 1.4571

- thread 1.4571

- cable electrodes 1.4571

- isolation of the cable electrodes PTFE / FEP

- gravity weight 1.4571 Size of the thread G 1

/2 A Length of the cable electrodes 300 … 20000 mm Number of cable electrodes 2 … 5 Protection IP 67 Temperature range -50°C … +100°C Max. permissible vessel pressure 63 bar Electrical connection Pg 16 Basic weight approx. 1 kg Additional weight of the cable electrodes approx. 0,01 kg per 100 mm

Product description

Conductive multiple cable electrode EL 5 Ex (2 … 5 cable electrodes)

Temperature range -20°C … +100°C Classification EEx ia IIC T6 Max. permissible ambient temperature

- temperature class T6 85°C

- temperature class T5 100°C all other technical data like type EL 5

6 Conductive measuring system

Product description

Conductive multiple cable electrode type EL 6 (2 … 5 cable electrodes)

Material

- connection housing PP

- thread PP

- cable electrodes 1.4571

- isolation of the cable electrodes PP / FEP

- gravity weight 1.4571 Size of the thread G 1

/2 A Length of the cable electrodes 300 … 20000 mm Number of cable electrodes 2 … 5 Protection IP 67 Temperature range -20°C … +120°C Max. permissible vessel pressure 6 bar Electrical connection Pg 16 Basic weight approx. 0,5 kg Additional weight of the cable electrodes approx. 0,01 kg per 100 mm

Conductive rod electrode type EL 8

Material

- connection housing plastic

- thread 1.4305

- rod electrode 1.4571

- isolation of the rod electrode PE Size of the thread G

/2 A Length of the rod electrode 30 … 1000 mm Protection IP 50 Temperature range -10°C … +60°C Max. permissible vessel pressure 6 bar Basic weight approx. 0,1 kg Additional weight of the rod electrode approx. 0,04 kg per 100 mm

Conductive cable electrode type EL 9

Material

- connection housing 1.4571

- thread 1.4571

- cable electrode 1.4571

- isolation of the cable electrode FEP

- gravity weight 1.4571 Size of the thread G

/2 A Length of the cable electrode 500 … 25000 mm Protection IP 67 Temperature range -50°C … +100°C Max. permissible vessel pressure 63 bar Electrical connection Pg 11 Basic weight approx. 0,6 kg Additional weight of the cable electrode approx. 0,01 kg per 100 mm

Conductive measuring system 7

Conductive cable electrode type EL 9 Ex

Temperature range -20°C … +100°C Classification EEx ia IIC T6 Max. permissible ambient temperature

- temperature class T6 85°C

- temperature class T5 100°C all other technical data like type EL 9

Signal conditioning instrument VEGATOR 256C

General

Series module unit Mounting 2 holes for M3 or carrier rail mounting

acc. to DIN 46 277, Bl. 3 Dimensions W = 37 mm, H = 69 mm, D = 80 mm Weight approx. 160 g

Power supply

Operating voltage

- standard 200 … 250 V AC, 50/60 Hz

- option 24 V, 42 V, 48 V, 100 … 130 V AC

+10 %, –15 %, 50/60 Hz Power consumption 1 VA

Product description

Measuring data input

Number 1 (1 x level detection or

Response resistor 1 … 200 kOhm adjustable Meas. circuit approx. 12 V eff, approx. 1 mA Switching hysteresis approx. 20 %

Relay output

Number 1 (1 x level detection) Mode overfill protection (A) Contact spdt Contact material Turn-on voltage min. 10 mV

Switching current min. 10 µA

Breaking capacity max. 750 VA or 54 W

Integration time

Fixed value approx. 500 ms

8 Conductive measuring system

1 x pump control -Min-Max.)

max. 250 V AC or 250 V DC

max. 5 A AC or 1 A DC

Product description

Ambient conditions

Permissible operating temperature -20°C … +50°C Storage and transport temperature -40°C … +70°C

Electrical protective measures

Protection IP 20 Protection class II

Electrical connection

Screw terminal max. for 1,5 mm

CE-conformity

VEGATOR 256C signal conditioning instrument meets the protective regulations of EMVG (89/336/EWG) and NSR (72/23/EWG). The conformity has been judged acc. to the following standards: EMVG Emission EN 50 081 - 1

Susceptibility EN 50 082 - 2

NSR EN 61 010 - 1

Signal conditioning instrument VEGATOR 532 Ex

General

Series 19"-module card, multipoint connector acc. to

Dimensions B = 25,4 mm (5 TE), H = 128,4 mm, D = 162 mm Weight approx. 170 g

DIN 41 612 incl. transparent cover

Power supply

Operating voltage 20 … 53 V AC, 50/60 Hz

20 … 72 V DC Power consumption max. 2 W, 3 VA Fuse

- supply range T 1 A, 250 V

- switching power min. 35 A at 250 V AC or 125 V DC

Measuring data input (channel)

Number 2 (2 x level detection or

2 x pump control -Min-Max) Response resistor 1 … 200 kOhm adjustable Parallel resistor

- for fault monitoring 220 kOhm Meas. circuit max. 5 V eff, max. 1 mA Permissible line capacitance 1 x 100 nF or

2 x 70 nF with Min-Max.-control Switching hysteresis approx. 15 %

Conductive measuring system 9

Product description

Measuring data input, Ex-technical data

Signal circuits in classification intrinsic safety EEx ia IIC Max. values

-U

-I

- P 20 mW

10,6 V 8 mA

Characteristics linear Inner effective inductance negligible Inner effective capacitance negligible Max. permissible outer inductance 5 mH Max. permissible outer capacitance 570 nF

The intrinsically safe circuits are reliably galvanically separated from the not-intrinsically safe circuits up to a peak value of the nominal voltage of 375 V. The intrinsically safe circuits of channel 1 and channel 2 are reliably galvanically isolated.

Relay outputs

Number 2 Mode overfill protection (A) and dry run protection (B)

changeover for each output (channel) separately Contact 1 spdt per output Contact material AgCdO and Au plated Turn-on voltage min. 10 mV

max. 250 V AC or 250 V DC Switching current min. 10 µA

max. 3 A AC or 1 A DC Breaking capacity max. 750 VA or 54 W

Transistor outputs

Number 2 (synchronously switching with relay outputs) Galvanic isolation floating Turn-on voltage U Switching current IB = max. 60 mA Voltage loss on the transistor U Blocking current I

= max. 36 V DC

= approx. 1,5 V at IB = 60 mA

< 10 µA

Integration time

Fixed value approx. 500 ms

Ambient conditions

Permissible ambient temperature -20°C … +60°C Storage and transport temperature -40°C … +70°C

10 Conductive measuring system

Product description

Electrical protective measures

Protection

- not mounted IP 00

- mounted into carrier BGT 596 Ex front side completely equipped IP 30

upper and lower side IP 20 wiring side IP 00

- mounted into housing type 505 Ex IP 30

Protection class II Overvoltage category II

Electrical connection

Mounted into

- carrier BGT 596 Ex 33-pole multipoint connector, series F (d, b, z)

- housing type 505 Ex screw terminal, max. for 1,5 mm

with coding holes

CE-conformity

VEGATOR 532 Ex signal conditioning instrument meets the protective regulations of EMVG (89/336/EWG) and NSR (72/23/EWG). The conformity has been judged acc. to the following standards: EMVG Emission EN 50 081 - 1

Susceptibility EN 50 082 - 2

NSR EN 61 010 - 1

Signal conditioning instrument VEGATOR 631 Ex

General

Series module unit with plug-in socket including

Dimensions W = 36 mm, H = 118,5 mm, D = 134 mm Weight approx. 170 g Mounting carrier rail mounting acc. to DIN 46 277, Bl 3

Power supply

Operating voltage 20 … 250 V AC, 50/60 Hz

Power consumption max. 1,5 W, approx. 1 … 9 VA Fuse

- supply range T 315 mA, 250 V

- switching power min. 35 A at 250 V AC or 125 V DC

Conductive measuring system 11

transparent cover, cover of the probe terminals, coded pin, 2 bridges

20 … 72 V DC

Product description

Measuring data input (channel)

Number 1 (1 x level detection or

1 x pump control -Min-Max) Response resistance 1 … 200 kOhm adjustable Parallel resistance

- for fault monitoring 220 kOhm Meas. circuit max. 5 V eff, max. 1 mA Permissible line capacitance 1 x 100 nF or

2 x 70 nF at Min-Max.-control Switching hysteresis approx. 15 %

Measuring data input, Ex-technical data

Signal circuit in classification intrinsic safety EEx ia IIC Max. values

-U

-I

- P 20 mW

10,6 V

8 mA

Characteristics linear Inner effective inductance negligible Inner effective capacitance negligible Max. permissible outer inductance 5 mH Max. permissible outer capacitance 570 nF

The intrinsically safe circuits are reliably galvanically isolated from the not-intrinsically safe circuits up to a peak value of the nominal voltage of 375 V.

Relay outputs

Number 1 Mode overfill protection (A) and dry run protection (B)

changeable Contact 1 spdt per output Contact material AgCdO and Au plated Turn-on voltage min. 10 mV

max. 250 V AC or 250 V DC Switching current min. 10 µA

max. 3 A AC or 1 A DC Breaking capacity max. 750 VA or 54 W

Transistor outputs

Number 1 (synchronuously switching with relay outputs) Galvanic isolation floating Turn-on voltage U Switching current I Voltage loss on transistor U Blocking current IO < 10 µA

= max. 36 V DC

= max. 60 mA

= approx. 1,5 V at IB = 60 mA

Integration time

Adjustable 0,2 … 20 s

12 Conductive measuring system

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