18
Troubleshooting the meter
Section 2: Troubleshooting
Maintenance and Troubleshooting Manual
December 2017
3-9000-764 Rev F
One or more of the chords is not
indicating a reading (reporting
zeros)
•
Check for loose connections at the cable connectors.
•
Check the resistance of the transducers (should be approximately 2
Ω
).
•
Problem also may be caused by a bad Acquisition Board or interconnect cable.
•
Check system status in the Daniel MeterLink program for any flagged errors.
•
Check the CPU Module.
•
Check the resistance of the failed transducer.
•
If Chord A is not indicating, change the transducer cables from Chord B to chord A.
If Chord B then fails, the transducers are bad on Chord A.
Power Failure
•
Meter has had power removed for a period of time or the meter restarted itself such
as after a firmware upgrade. The Audit log in the meter indicates the power fail
time.
—
If this was an unexpected restart of the meter, verify the integrity of the power
to the meter and make sure that the voltage level is in the range of 11-36 VDC
at the meter.
—
If this was a known power fail or restart of the meter, just acknowledge this
alarm.
Sound velocity is outside defined
limits
•
The meter's measured average sound velocity is outside the defined limits.
—
Verify that all chords are measuring the same Speed of Sound within about
0.15%. Look for alarms that indicate transducer problems and resolve any of
these issues. This could include failing transducers, debris buildup on trans-
ducers, or incorrectly entered path lengths in the configuration.
—
If the chords agree, adjust the SSMin or SSMax using the
Edit/Compare
Config utility
in Daniel MeterLink
so the meter's average speed of sound falls
within these limits.
—
Collect a Maintenance log using Daniel MeterLink and contact your Daniel
service representative.
Waveform contains an excessive
amount of noise
•
Use the Daniel MeterLink
Meter>Signal Analyzer
to increase the StackSize
until
noise level decreases (settings can be 1 (none) 2, 4, 8, or 16). If increasing the
StackSize is not successful, try turning on the filter or consult with Daniel Customer
Service if you are unsure of how stacking a signal can affect the meter's operation.
Table 2-1 Troubleshooting
Error
Recommended action(s)
