Setup Menu Teledyne API T803 CO2/O2 Analyzer Operation Manual
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5.11. SETUP MORE ALRM: USING THE GAS

CONCENTRATION ALARMS (OPTION 61)

The T803 includes two 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 3.3.1.4). If the
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 5-8: Concentration Alarm Default Settings
ALARM STATUS LIMIT SET POINT
O2 ALARM1 Disabled 10.00 %
O2 ALARM2 Disabled 30.0 %
CO2 ALARM1 Disabled 5.000 %
CO2 ALARM2 Disabled 10.00 %
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..
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