RWG 5020 Ex, Ex potentiometer
Technical data Electronic position transmitter/potentiometer
RWG 5020 Ex
On the basis of the actual potentiometer value, the RWG generates a current signal for signalling the valve position.
Data
2-wire system
Output current IA
4 – 20 mA
1)
V
10 – 28.5 V DC
Supply voltage U
1)
K
< 200 mA
Short-circuit current I
Power P1)
< 0.9 W
(UV – 10 V)/20 mA
Max. load RB
Impact of power supply
≤ 0.1 %
Load influence
≤ 0.1 % (RB = 0...600 Ω)
Temperature impact
< 0.1 ‰/K
Transmitter potentiometer
5 kΩ
3)
Ambient temperature
– 60 °C /–40 °C to +60 °C2)
Explosion protection
II2G Ex ib IIC T4
EC type test certificate
PTB 03 ATEX 2176
Notes on table
1) Power supply
Power supply via external, intrinsically safe (Ex ia or Ex ib) power supply unit with type test certificate meeting
the technical requirements of RWG 5020 Ex.
2) Ambient temperature
Depending on temperature range of the actuator: Refer to name plate
3)
For heater in switch compartment
Wiring
2-wire system
RWG 5020
Connector XK for
Customer connection
21 22 23 24
4 – 20 mA
8”9
3”:
CC
,”P$
T = -40..60 °C
BK
YE
RD
0344
Riester GmbH & Co.KG
D-79379 Muellheim
RWG 5020.2 Ex
II2G Ex ib IIC T4
PTB 03 ATEX 2176
Ser.Nr.:
1 2
Setting:
3 4 5
Refer to the operation instructions relating to actuator.
We reserve the right to alter data according to improvements made. Previous documents become invalid with the issue of this document.
Y007.184/003/en
Issue 1.15
Page 1/2
RWG 5020 Ex, Ex potentiometer
Technical data, Ex potentiometer
Potentiometer
Travel sensor for recording the valve position.
Data
Wire potentiometer
Independent linearity
≤ 1 %
Widerstand (Option)1)
0.1 kΩ
0.2 kΩ
0.5 kΩ
1 kΩ
5 kΩ
Resistance tolerance
+/– 5 %
Rated power
1.2 W
– 30 °C3)/–20 °C to +60 °C2)
Ambient temperature
Enclosure protection according to IEC 60529
IP 54
Explosion protection
II2G Ex db IIC Gb T4
I M2 Ex db Mb
EC type test certificate
PTB 03 ATEX 1025 U
Notes on table
1) Resistance (option)
Further variants on request
2) Ambient temperature
Depending on temperature range of the actuator: Refer to name plate
3)
For heater in switch compartment
The position of the valve can be transmitted as a continuous signal by a potentiometer. The potentiometer is installed in the control unit of the actuator.
We recommend:
Using the potentiometer as voltage divider. Depending on the supply voltage, suitable series resistors are to be provided. Please observe max. rated power.
We reserve the right to alter data according to improvements made. Previous documents become invalid with the issue of this document.
Y007.184/003/en
Issue 1.15
Page 2/2