MJ400252C1
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7.
Troubleshooting
Symptom
Probable Cause
Check Item and Corrective Action
1. The indicator shows
nothing.
a. The power is not on.
1. Check to see if the power has been turned on.
2. Check to see if wires have been connected correctly.
2. The indication does
not change from
‐‐‐
W to flow rate.
a. The piping is not full of water.
1. Fill the piping with measuring liquid fully.
b. The liquid may be out of the
specification range.
1. Check liquid specifications such as temperature of
measuring liquid.
2. Try the auto AVR function.
If the indication does not change to flow rate when the
auto AVR function is executed, it is possible that the
liquid in question is unmeasurable liquid. Please
contact us.
3. The indicated value is
not stable.
a. The piping is not full of water.
1. Fill the piping with measuring liquid fully.
2. Check the piping installation direction. It is
recommended that the equipment be installed in such
a direction that liquid flows upward in order to
prevent trapping of air bubbles.
b. Measuring liquid contains bubbles
or foreign matter.
1. Eliminate bubbles and foreign matter as much as
possible by, for example, installing a deaerator in the
upstream.
c. The flow pulsates.
1. If responsiveness is not affected, increase the damping
constant.
d. Measuring liquid is not uniform.
1. Keep entire liquid in the uniform state by, for example,
stirring it fully.
Symptom
Probable Cause
Check Item and Corrective Action
4. The indicated flow rate
does not match the
actual flow rate.
a. The piping line is leaking.
1. Retighten the leaking places due to a failure to tighten
the nuts or insufficient tightening of the nuts of the
piping line to prevent leak.
b. The zero point is not correct.
1. Conduct the zero adjustment.
c. The meter is used in a way
deviating from the specification.
1. Refer to the specification label attached to the meter.
d. Measuring liquid contains
bubbles or foreign matter.
1. Eliminate bubbles and foreign matter as much as
possible by, for example, installing a deaerator in the
upstream.
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If the problem cannot be solved by the above corrective actions, please contact the dealer.
