PULSAR MEASUREMENT
31
POSSIBLE CAUSES:
CORRECTIVE ACTION:
NO FLOW INDICATION
Not enough suspended particles or gases in the
fluid
Relocate sensor in more turbulent pipe
section.
Mount sensor at 12 o'clock position on
horizontal pipe
Coupling compound washed out, or sensor loose
on pipe
Remount sensor
Use Super Lube ®
Power interruption. No flow.
Check fuse/breaker. Confirm flow
METER READING TOO HIGH
Calibration error
Review UNITS/MODE menu and Pipe ID
Pipe is not full
Remount Sensor on vertical pipe
Nearby velocity increasing device (pump, valve,
orifice plate)
Relocate sensor >30 pipe diameters from
velocity increasing device
Local electrical noise
Ensure all Flowmeter wiring is in METAL
conduit and sensor cable shield is connected
to Ground stud
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).