FSM4000 ELECTROMAGNETIC FLOWMETER | OI/FSM4000-EN REV. E 31
Routing the signal and magnetic coil cable
Observe the following points when routing cables:
•
The signal and magnetic coil cable carries a voltage signal
of only a few millivolts and therefore must be routed the
shortest distance possible. The maximum permissible
signal cable length is 50 m or 200 m, if the flowmeter
primary is equipped with a preamplifier.
• Avoid the vicinity of electrical equipment or switching
elements that can create stray fields, switching pulses
and induction. If this is not possible, run the signal /
magnet coil cable through a metal pipe and connect this
to the station ground.
• All lines must be shielded and connected to operational
ground.
• Do not run the signal cable and the magnetic coil cable
over junction boxes or terminal blocks.
• To shield against magnetic interspersion, the cable
contains outer shielding that is attached to the SE clamp.
• Make sure during installation that the cable is provided
with a water trap
1. For vertical installation, align the
cable glands pointing downward.
29: Water trap
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