Electrical Connection; General - Siemens SITRANS FM100 Operating Instructions Manual

SITRANS FM100

8. Electrical Connection

8.1 General

Attention! Make sure that the voltage values of your system
correspond with the voltage values of the measuring unit.
 Make sure that the supply wires are de-energised.
 Connect the supply voltage and the output signal to the plug PIN's as stated
below.
 We recommend the use of wires with cross sectional area of min. 0.25 mm².
Attention! The measuring electrodes are galvanically connected
with the reference potential of the supply voltage and the signal
output.
8.1.1
If the device is installed in a continuously grounded / earthed metallic pipe, no
additional grounding / earthing of the housing is generally necessary. When
installing in a plastic pipe or any ungrounded pipe, the housing must be earthed
at the side threaded hole (M4) to ensure proper functionality of the FM100. A M4
screw (thread length max. 8 mm), a matching washer, a ring cable lug and a
toothed lock washer are required for correct installation.
These mechanical parts are not part of the delivery.
page 8
Grounding/ Earthing
A5E48762204-AB