Chapter 4. Error Codes and Troubleshooting
88 PanaFlow™ LC User’s Manual
Gain Up / Gain
Down
Gain setting >0 dB and <35 dB
• In water applications,
under ideal
conditions, gain
should be greater than
0 dB and less than
20 dB.
• For higher viscous
liquids, gain between
20dB and 35 dB is
acceptable.
>35 dB or <0 dB
• Gain spreads of 10dB or more
between the channels can be
an indication of a problem with
the pipe installation or any
other different local pipe
condition.
• If the gain is negative, change
the Transmit Voltage to “Low”.
If it is still negative, enable
Attenuator. Do not enable
Attenuator if the Transmit
Voltage is high.
• If the gain is greater than 35 dB,
change the Transmit Voltage to
“High”.
Peak Index Up Threshold peak of the
upstream transmit
correlation signal
• For pipe sizes greater
than 1 inch, index
should be between
400 - 700.
• For pipe sizes less
than 1 inch, the index
should be between
150 - 350.
• For pipe sizes greater than 1
inch, if the index <400 or >700
then there is an indication of
problem with receive window
location.
• For pipe sizes less than 1 inch,
if the index <150 or >350 then
there is an indication of
problem with receive window
location.
Peak Index Down Threshold peak of the
downstream
transmit correlation
signal
• For pipe sizes greater
than 1 inch, index
should be between
400 - 700.
• For pipe sizes less
than 1 inch, the index
should be between
150 - 350.
• For pipe sizes greater than 1
inch, if the index <400 or >700
then there is an indication of
problem with receive window
location.
• For pipe sizes less than 1 inch,
if the index <150 or >350 then
there is an indication of
problem with receive window
location.
Wall Time Transit time inside
the pipe wall
N.A If the value is negative, then there
is an indication of problem with
the configuration parameters.
Lining Time Transit time inside
the pipe lining
N.A If the value is negative, then there
is an indication of problem with
the configuration parameters
Parameter Description Good Bad
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