Teledyne API T802 Paramagnetic O2 Analyzer Operation Manual
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5.10. SETUP MORE ALRM: USING THE GAS CONCENTRATION ALARMS (OPTION 61)

The T802 includes two O2 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 O2

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: O2 Concentration Alarm Default Settings
ALARM STATUS LIMIT SET POINT1
O2 ALARM1 Disabled 10.00 %
O2 ALARM2 Disabled 30.0 %
CO2 ALARM11 Disabled 5.000 %1
CO2 ALARM21 Disabled 10.00 %1
1 Only available if the optional CO2 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