YOKOGAWA IR800G, User Manual

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IM 11G06A01-02EN
7-1
7. TROUBLE SHOOTING
1st Edition : Oct. 27, 2023-00
7. TROUBLE SHOOTING
7.1 Alarms
Alarms are generated when there is a problem with the instrument. There are two types of
alarms, “Fault”
and “Warning” . If a “Fault” occurs, the event is recorded in the error log.
For more information on the error log, see 5.5 Information. The following are lists of alarms.
Table 7.1 Fault
Alarm name Description Remedy
Converter unit failure The converter unit has a fault. Contact our service.
Output wiring is error Input/output contact circuit or wiring is
abnormal.
Optical unit error Optical unit measurement or
communication is faulty.
O
2
unit error The built-in oxygen meter has a
measurement error.
Chx Zero calibration alarm Chx Zero calibration failed Check calibration gas flow rate,
remaining cylinder pressure, zero
calibration contact, and flow time settings
Chx Span calibration alarm Chx Span calibration failed Check the calibration gas flow rate,
remaining cylinder pressure, and
span calibration contact and flow time
settings.
Chx Auto calibration alarm Zero/span calibration of Chx failed
during auto-calibration.
Check the calibration gas flow rate,
remaining cylinder pressure, zero/
span calibration contact, and flow time
settings
Chx Cal. stability alarm Even after flow time has elapsed, the
measured value of Chx is not stable.
Check the setting of the flow time.
x: 1 to 5
Table 7.2 Warning
Alarm name Description Remedy
Date and time not set The date and time have not been set Set the date and time
For date and time settings, refer to
“5.3.2 Date and Time Settings”.
Chx HH alarm (*1) Chx The concentration of the
component exceeds the set value.
Check the measured values and
alarm setpoints.
Chx L alarm (*1)
Chx H alarm (*1) Chx The concentration of the
component falls below the set value. Chx LL alarm (*1)
Peak count alarm The number of times the CO
concentration threshold is exceeded
per hour has exceeded the set number
of times.
Eliminate the cause of elevated CO
concentrations
Chx Zero validation alarm (*2) The measured value of Chx component
exceeded the set value during zero
validation.
Perform zero calibration.
Chx Span validation alarm (*2) The measured value of Chx component
exceeded the set value during span
validation.
Perform span calibration.
Chx Zero cal. caution (*3) The zero calibration factor of Chx is
approaching outside the proper range.
Check the calibration gas flow rate,
remaining cylinder pressure, zero
calibration contact and flow time
setting.
Chx Span cal. caution (*3) The span calibration factor of Chx is
approaching outside the proper range.
Check the calibration gas flow rate,
remaining cylinder pressure, and
span calibration contact and flow time
settings.
*1: x: 1 to 12
*2: x: 1 to 5
*3: x: 1 to 4 and the channel is other than O
2.