Yokogawa Multi Channel Oxygen Analyzer System ZR22/AV550G - Manual (Page 217)

IM 11M12D01-01E 12-7
12. Troubleshooting
12.2 Displays and Remedies When Alarms are Generated
12.2.1 Alarm Types
The following types of alarms may be generated by the averaging converter. If an alarm
is generated, actions such as turning off the heater power are not carried out. The alarm
is canceled when the cause of the alarm is removed.
Alarm 5 (cold junction temperature alarm) may be generated concurrently with Error 2
(heater temperature error). In this case, the operation when the error occurs has priority.
If the power to the averaging converter is turned off after an alarm is generated and the
averaging converter is restarted before the cause of the alarm has been removed, the
alarm will be generated again. Alarms 2, 3 and 4 (related to calibration) are not gener-
ated unless calibration is executed. An alarm will be automatically canceled after the
cause of the alarm is removed.
Warmup
Tag:
Ch1
100%
Ch2
0.96
%
Ch3
749
Њ C
Ch4
648 Њ C
Ch5
749
Њ
C
Ch6
0.96
%
Ch7
749
Њ C
Ch8
755
Њ C
Hold
Fig12.6E.EPS
Alarm Icon
Channels Where Alarms Occur (displayed in red)
Figure 12.6 Alarm Displays on Multi-channel Display
Tag:
Alm6: Process gas
Alm7: Cal gas press low
Ch1 Alm1: Oxygen
Ch2 Alm2: Zero conc. ratio
Ch3 Alm3: Span conc. ratio
Ch4 Alm5: C.J. temp.
Ch5 Alm4: Cal. time over
Fm-11E.EPS
Figure 12.7 Alarm Descriptions