Table 13: Error code descriptions
Error code
Problem
Cause
Recommended action
W24: Low SNR
The signal to Noise
ratio is low.
The acoustic signal from the process
is of very low quality due to excessive
noise in the signal. This could be
due to bubbles, solids or other
non-homogeneous fluid conditions,
or issues with transducers, couplant
or buffers.
Refer to the
fluid and pipe problems
and
transducer problems
sections to
correct any issues. Refer to the
flow
info
section to gather diagnostics
data before contacting Panametrics.
E25: Half full pipe
The pipe might not be
filled completely.
If the top-most channel on each
plane is in error, the pipe might
not be completely filled. The meter
is using chord substitution to
continue measuring. Please check
the individual chord diagnostics to
diagnose problem.
Check if the pipe is full. Check for
individual channel errors, and refer
to this table for recommended
actions to correct those errors.
E26: Possible
sediment
Possible
sedimentation
covering the sensors
If the bottom-most channel on
each plane is in error, there could be
sedimentation covering the sensor
faces. The meter is using chord
substitution to continue measuring.
Check the individual chord
diagnostics to diagnose
the problem.
Check for individual channel
errors, and refer to this table for
recommended actions to correct
those errors. Refer to the
more than
one channel in error
section for
general troubleshooting guidelines.
E27: Inner
chord(s)
Two or more inner
chords in error.
Two or more inner chords are in error.
The meter is using chord substitution
to continue measuring. Check the
individual chord diagnostics to
diagnose the problem.
Check for individual channel
errors, and refer to this table for
recommended actions to correct
those errors. Refer to the
more than
one channel in error
section for
general troubleshooting guidelines.
E28: Symmetry
The velocity symmetry
is compromised.
Two or more chords are in error,
and the velocity symmetry is
compromised. The meter is using
chord substitution to continue
measuring. Check the individual
chord diagnostics to diagnose
problem.
Check for individual channel
errors, and refer to this table for
recommended actions to correct
those errors. Refer to the
more than
one channel in error
section for
general troubleshooting guidelines.
E29: Stale data
Internal data may
be stale.
There is an internal data
processing failure.
This condition is self-recovering
and the error will be automatically
corrected.
E30: Channel off
Channel is currently
disabled.
The channel is currently disabled.
The meter will continue to measure
with the enabled channels. However,
the accuracy of the measured flow
may be compromised.
Check the
channel status
in the
meter program.
93
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