Maintenance and troubleshooting Azbil Corporation
8-6 Model MTG11A/18A, MTG11B/18B, MTG14C
8-2 : Troubleshooting
Types of troubles
Introduction
If a problem occurs at the instrument start-up and operation, the following three causes
should be considered.
• Inconsistency between the specifications and actual operating conditions.
• Missetting or misoperation.
• Instrument malfunction.
If a problem occurs during operation, the device’s self-diagnostic function will classify
it as critical or non-critical. It will indicate this and respond accordingly.
Critical failure
Critical problems may obstruct electromagnetic flowmeter operation, if not corrected,
ultimately damage the flowmeter. When critical problem occurs during operation, an
error message will appear on the converter’s display panel and the output continues to
output the value set in the direction of abnormality processing. The error message and
self-diagnosis results can be read through communication (SFC, HART
communicator).
Non-critical failure
Non-critical problems will not seriously affect electromagnetic flowmeter operation.
When an error occurs during operation and is regarded as a non-critical problem by the
converter self-diagnostics, the output will not burn-out and the flowmeter will
continue to output the measured value.
CM2-MTG300-2001.book 6 ページ ２０１５年９月２９日 火曜日 午前１０時１４分
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