Level Probe LGC2
Electrical Connection
2017
-0
2
33
6.7
Connecting the Measuring Unit
6.7.1
Overvoltage Protection
To protect the device and the temperature head transmitter from large interference voltage
peaks, Fuchs recommends installing overvoltage protection upstream and
downstream of the display and/or evaluation unit as shown in the graphic.
Figure 6.4
A
Power supply, display and evaluation unit with one input for Pt100 resistance
thermometer
B
Power supply, display and evaluation unit with one input for 4 to 20 mA
C
Power supply, display and evaluation unit with two inputs for 4 to 20 mA
1
Level probe LGC2
2
Connection for integrated Pt100 resistance thermometer in the device
3
4 to 20 mA (temperature)
4
4 to 20 mA (level)
5
Overvoltage protection, not for use in hazardous areas
6
Power supply
1
3
4
3
4
5
5
5
5
5
5
5
6
6
6
2
A
B
B
C
2
