Possible Causes: Corrective Action:
Variable Speed Drive interference
·
Follow Drive manufacturers wiring and
Grounding instructions
·
Relocate Flowmeter electronics, Sensor and
wiring away from VSD
METER READING DOES NOT TRACK FLOW
Sensor and GND wires reversed or not properly
connected
·
Check Sensor connections
Improper AC power input Ground
·
Use direct connection with 12 AWG wire to
nearest Ground pole (<1 ohm resistance).
Page 21
DFM-IV Doppler Flow Meter
Manual Series A.6
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