Teledyne API – Technical Manual - Model 300E Family CO Analyzers Advanced Features
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7.5. SETUP MORE ALRM: USING THE GAS
CONCENTRATION ALARMS
The M300E/EM includes two CO concentration alarms if OPT 61 is installed on your instrument. Each alarm has
a user settable limit, and is associated with a Single Pole Double Throw relay output accessible via the alarm
output connector on the instrument’s back panel (See Section 3.3.3). If the CO concentratio
n
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 7-11: CO Concentration Alarm Default Settings
ALARM STATUS LIMIT SET POINT
1
alm1 Disabled 100 ppm
alm2 Disabled 300 ppm
1
Set points listed are for PPM. Should the reporting range units of measure be changed (See Section
6.6.3) the analyzer will automatically scale the set points to match the ne
w range unit setting.
NOTE
To prevent the concentration alarms from activating during span calibration operations ensure that the
CAL or CALS button is pressed prior to introducing span gas into the analyzer.
7.5.1. SETTING THE M300E CONCENTRATION ALARM LIMITS
To enable either of the CO concentration alarms and set the limit points, press:
