10
TROUBLESHOOTING
MEASUREMENT IS NOT ACCURATE
PROBABLE CAUSE
SOLUTION
Debris/particles in liquid
Need proper filtration
Air in liquid - No back pressure
Increase back pressure on
meter to eliminate air
Air in liquid - Plumbing installation
Install meter away from other fittings
or flow obstructions. Do not allow
meter to discharge to atmosphere.
Air in liquid - Pump cavitation
Install meter away from pump
Pipe not full - No back pressure
Increase back pressure on
meter to eliminate air.
Pipe not full - Plumbing installation
Install meter where pipe is always
full of liquid. Do not allow meter
to discharge to atmosphere.
Conductivity of fluid too low
Consult liquid properties
Operating outside meter limits
Increase/decrease flow rate
to proper meter specification.
Review temperature limits.
Electrical noise
Install meter away from
devices that emit EMF.
Ground loop
Meter may need to be
earth grounded
Electrodes not clean
Clean electrode tips
Interface device not
properly calibrated
Consult device instructions
and specifications.
NORMAL FLOW BUT METER DOES NOT WORK
PROBABLE CAUSE
SOLUTION
Wiring not correct
Consult wiring diagrams.
Review installation.
Operating outside meter limits
Review voltage requirements
Meter installed backwards
Check to see if the direction
of the arrows on the meter
match flow direction.
