Omega Engineering FLR 1000 Series User Manual page 27

Symptom Possible Cause
Flow indication is not Attempting to measure
linear and output too flows below the specified
low at lower flows minimum for the unit
Moisture or liquid in sensor
Mechanical sensor assembly
damaged
Flow reading accuracy Gas has a specific gravity
is outside the other than Air at 20°C
specification
Moisture in sensor
Mechanical sensor assembly
damaged
Pressure drop issue
Flow indication is fixed The maximum rated flow for
at one value the unit is being exceeded.
Output circuits may be
damaged
Method of Correction
Use higher flow rates
Remove moisture and allow
sensor to dry out
Unit must be returned for
repair (see Section J)
Calculate the flow reading
error / offset as explained in
section C6
Allow sensor to dry out.
Ensure gas is dry.
Unit must be returned for
repair (see Section J)
Correct for the pressure
drop ( ΔP )
Reduce the flow
Unit must be returned for
repair (see Section J)
pg. 27 of 29