Azbil MPC0002 User Manual

6-2
Chapter 6. TROUBLESHOOTING
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Other troubles
Error Cause Countermeasure
Flowrate display does not become
zero even in spite of an actual zero
flowrate.
(Display does not become OFF even
if the valve is fully closed.)
• Zero point shift due to the influence of
pressure.
• Gas type setup is incorrect.
• Condensation on sensor.
• Foreign object attached to sensor.
• Adjust the inlet pressure setting
(function setup C-20) with the actual
inlet pressure used, or use the PV
forced zero function (function setup
C-29).
• Adjust the gas type setting (function
setup C- 18) with the actual gas used.
• Insert a mist trap upstream.
• Request for repair service.
Flowrate does not stabilize. • Operation differential pressure range is
exceeded.
• Large inlet pressure fluctuations.
• Regulator interference.
• Large pressure loss between regulator
and this device. (Large fluctuation in inlet
pressure according to flowrate.)
• Reduce the inlet pressure.
• Install a regulator upstream.
• Change the regulator pressure setting
or apply the PV filter.
(function setup C-23)
• Change the pipe bigger diameter.
Poor accuracy • Temperature reference does not match
the reference flowmeter.
• Regulator is vibrating slightly.
• Foreign object attached to sensor.
• Adjust the temperature reference.
(It can be changed in the function
setup C- 19)
• Change the regulator pressure
setting.
• Request for repair service.

Azbil MPC0002 Specifications

General

Brand	Azbil
Model	MPC0002
Category	Controller
Language	English