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Teledyne API T802 Paramagnetic O
2
Analyzer Operation Manual
109
5.10. SETUP MORE ALRM: USING THE GAS
CONCENTRATION ALARMS (OPTION 61)
The T802 includes two O
2
concentration alarms. Each alarm has a user settable
limit, and is associated with an opto-isolated TTL relay accessible via the status
output connector on the instrument’s back panel (See Section 3.3.1.5). If the O
2
concentration measured by the instrument rises above that limit, the alarm‘s
status output relay is closed.
The default settings for ALM1 and ALM2 are:
Table 5-9: O
2
Concentration Alarm Default Settings
ALARM STATUS LIMIT SET POINT
1
O2 ALARM1 Disabled 10.00 %
O2 ALARM2 Disabled 30.0 %
CO2 ALARM1
1
Disabled 5.000 %
1
CO2 ALARM2
1
Disabled 10.00 %
1
1
Only available if the optional CO
2
sensor is installed.
Note
To prevent the concentration alarms from activating during span calibration
operations make sure to press CAL button prior to introducing span gas into
the analyzer..
07275B DCN6418