TTFM 6.1 INSTRUCTION MANUAL
72
FIELD TROUBLESHOOTING
POSSIBLE CAUSES:
CORRECTIVE ACTION:
METER READING WHEN THERE IS NO FLOW?
Erratic measurement (set
damping to 0% to check) due to
electrical noise or poor signal
quality.
Set
Calibration/ Damping
to
0%
with zero flow
use
Setup / Tare
function.
Ensure all Flowmeter wiring is in METAL conduit and
sensor shield is properly connected to Ground.
Ensure correct power input Ground connection (<1 ohm
resistance).
Ensure 4-20mA Shield connected to Instrument Ground
stud.
Adjust
Calibration / Min Flow
setting.
Contact Pulsar Measurement for further assistance.
Variable Speed Drive interference
Follow Drive manufacturers wiring and Grounding
instructions
Relocate Flowmeter electronics, Sensor and wiring away
from VSD
METER READING LOWER THAN EXPECTED?
Calibration Error
Review calibration menu. Pipe dimensions and fluid
selection/fluid velocity.
Lower flow rate than expected
Investigate pump/valves. Compare velocity with alternate
instrument.
Erratic measurement (set
damping to 0% to check) due to
electrical noise or poor signal
quality.
Ensure all Flowmeter wiring is in METAL conduit and
sensor shield is properly grounded.
Ensure correct power input Ground connection (<1 ohm
resistance).
Ensure 4-20mA Shield connected to Instrument Ground
stud.
Contact Pulsar Measurement for further assistance.
NO ECHO INDICATION Icon: No Echo
Improper Installation
Check Setup menu to ensure pipe material, size, thickness,
liner type, thickness, fluid type, and fluid temperature and
configured properly. Check transducer mounting method
and spacing matches Setup menu values.
Sensors not mounted to Pipe or
mounted improperly
Apply coupling compound and mount sensors to pipe with
proper sensor spacing.
Empty pipe or partially filled
Pipe must be fluid filled and acoustically transparent in
order to obtain echoes.
Coupling compound washed out,
or sensor loose on pipe.
Remount sensor
Use Super Lube® Silicone Compound
SENSOR CONNECTIONS
