Wiring
Micropilot M FMR 231 with HART/4...20 mA
24
E Hauser
Supply voltage
The following values are the voltages across the terminals directly at the instrument:
Power consumption
Normal operation: min. 60 mW, max. 900 mW
Current consumption
Communication
Current
consumption
Terminal voltage
minimal
maximal
HART
standard
4 mA
16 V
36 V
20 mA
7.5 V
36 V
EEx ia
4 mA
16 V
30 V
20 mA
7.5 V
30 V
EEx em
EEx d
4 mA
16 V
30 V
20 mA
11 V
30 V
Fixed current,
adjustable e.g. for
solar power operation
(measured value
transferred at HART)
standard
11 mA
10 V
36 V
EEx ia
11 mA
10 V
30 V
Fixed current for HART
Multidrop mode
standard
4 mA
1)
1)
Start up current 11 mA.
16 V
36 V
EEx ia
4 mA
1)
16 V
30 V
Communication
Current consumption
HART
3.6...22 mA
