Titan Metraflow 240-020, Instruction Manual

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©Titan Enterprises Ltd 2018 www.flowmeters.co.uk MetraflowManual_v1219
Symptom Cause Solution
No LCD Display Power supply too low Ensure >10VDC supply connected
Erratic Flow Reading Too low a signal Check Advanced Tab for signal
strength
Back Pressure inadequate Increase Back Pressure to
5 2xvapor pressure of
the liquid
Gas in flow meter Increase flow to purge line
Ensure position optimum for
ensuring no gas can be entrained
in the flowmeter
Erratic or Cycling Flow Rates at
constant liquid flow Pulsating flow causing aliasing of
the flow meter sampling in relation
to the flow pulsation Remove or Dampen pulsation to
below 10Hz
Noisy flow reading at low flow Gas in flow meter Increase flow to purge line
Ensure position optimum for
ensuring no gas can be entrained
in the flowmeter
Flow reading incorrect after period
of shut down Flow Signal incorrectly positioned Reset the meter – power cycle
Gas lock in pipe Purge line with high flow and
restart meter
Calibration incorrect Zero set at wrong temperature Remove Null by power cycling
meter or using Titan Interface
Software
Calibration incorrect at start up.
After minutes of operation system
corrects itself Speed of sound of fluid
significantly faster/slower than
water Check signal using Titan Interface
Software and manually adjust to
ensure meter starts up looking in
correct time window.
No Pulse Output on Wire but
output showing on Interface
Software Incorrect Wiring Check Pull up or Pull Down
resistor are wired correctly
according to the diagrams in the
manual
No Pulse Output on output or
showing on Titan Interface
Software Reverse Flow 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
Troubleshooting 6