Riken Keiki OHC-800, Руководство по эксплуатации

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7 Maintenance 7-1. Maintenance intervals and items
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7-1-3. Biannual regular maintenance
Biannual regular maintenance is performed to check the soundness of the sensor output, power voltage,
contact output, analog signal output etc. As required, perform the items shown below.
(1) Device cleaning
(2) Parts replacement
(3) External tubing parts replacement (4) Reading operation check
(5) Log data analysis (optional service) (6) Others
At the biannual regular maintenance, the items of daily maintenance and monthly regular maintenance are
also checked.
NOTE
Log data analysis (optional service)
The OHC-800, having an advanced self-monitoring/diagnostic function, monitors the soundness of the
items shown below at all times.

Light source brightness

Various fault flag

Contrast

Sensor voltage

Unit temperatures

4 - 20 mA output state

GAS OUT absolute pressure fluctuation

Optical sensor unit output

GAS flow rate

Sonic sensor unit output

REF flow rate
The product stores at all times the log data that records the "operation statuses" and "diagnostic results"
for more than one year in the past.
In "log data analysis," an optional service, RIKEN KEIKI service engineer collects this log data via IrDA
communications, and RIKEN KEIKI analyzes the data, graph the "operation statuses" and "self-diagnosic
results" for the past one year, and submits a report about them.
The analysis results available in this service, based on long-term data over the past one year, can be
used as effective data by the user to check the stability of devices throughout the year and evaluate the
plant operation statuses, which cannot be easily done in ordinary biannual regular maintenance.
If you are considering the use of this service, contact RIKEN KEIKI.