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Chapter VII Common Faults and Troubleshooting
Note:
Each flowmeter would be strictly tested and checked before leaving factory. However, it would
still fail to work because of incorrect operation, wrong settings or bad working conditions. The
following shows the common faults happened in operation, and provides analysis and related
solutions.
If you still couldn’t solve the problem, please contact the manufacturer or local service provide
r.
Fault Causes and Troubleshooting
Code
Description
Causes
Troubleshooting
*R
System
Normal
* The system runs normally
*E
Run signal
unknown
* It can’t receive signals
*Check whether the transducers are installed
correctly or not.
* The installation spacing between
transducers is incorrect or they are
not installed on the same
horizontal plane.
Check the installation parameters and slightly
adjust transducers to check whether they
could receive any signals or not.
* The couplant is applied in an
improper way, or there are
bubbles between transducers and
the pipe wall.
*Ensure that the couplant is applied in a
proper way and there are no bubbles
between transducers and the pipe wall.
*D
* There are too many scales on the
inner wall of the pipe.
* A new pipe lining is used.
* Paint and rust on the wall should be
removed.
*Remove scales or replace the pipe section
with scales with a new one, or install the
flowmeter
at
a
proper
place
for
measurement.
*Measure when the lining is solidified.
Gain
adjustment
* The flowmeter is carrying out
normal gain adjustment and is
preparing for measurement
