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6
Troubleshooting
Symptom
No LCD Display
Erratic Flow Reading
Erratic or Cycling Flow Rates at
constant liquid flow
Noisy flow reading at low flow
Flow reading incorrect after period
of shut down
Calibration incorrect
Calibration incorrect at start up.
After minutes of operation system
corrects itself
No Pulse Output on Wire but
output showing on Interface
Software
No Pulse Output on output or
showing on Titan Interface
Software
©Titan Enterprises Ltd 2018
Cause
Power supply too low
Too low a signal
Back Pressure inadequate
Gas in flow meter
Pulsating flow causing aliasing of
the flow meter sampling in relation
to the flow pulsation
Gas in flow meter
Flow Signal incorrectly positioned
Gas lock in pipe
Zero set at wrong temperature
Speed of sound of fluid
significantly faster/slower than
water
Incorrect Wiring
Reverse Flow
www.flowmeters.co.uk
Solution
Ensure >10VDC supply connected
Check Advanced Tab for signal
strength
Increase Back Pressure to
500mbar + 2xvapor pressure of
the liquid
Increase flow to purge line
Ensure position optimum for
ensuring no gas can be entrained
in the flowmeter
Remove or Dampen pulsation to
below 10Hz
Increase flow to purge line
Ensure position optimum for
ensuring no gas can be entrained
in the flowmeter
Reset the meter – power cycle
Purge line with high flow and
restart meter
Remove Null by power cycling
meter or using Titan Interface
Software
Check signal using Titan Interface
Software and manually adjust to
ensure meter starts up looking in
correct time window.
Check Pull up or Pull Down
resistor are wired correctly
according to the diagrams in the
manual
Check Settings installation
If reverse flow is required to give a
pulse output, check the Decrease
Total for -ve Flow box in the User
Settings
MetraflowManual_v1219
29
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