PureAire Monitoring Systems, Inc.
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P a g e
After entering the alarm delay, the display will default back to the Alarm Delay menu
and the display will scroll the following:
NOTE: The alarm delay is only available for alarms 1 and 2. There is no delay for
the fault relay. Any system fault will immediately activate the Fault Relay.
5.5.7 Set Zero Suppression
This function not used on the Oxygen monitor. It is only used to decrease the
sensitivity of selected gas sensors. Although the menu permits the changing of settings,
it is totally disabled in the Oxygen monitor. The factory default is set at 000.
NOTE: This function is not available on the Air Check Oxygen monitor.
5.5.8 Set Alarm Thresholds
This main menu will permit adjusting the oxygen concentration percentage that will
activate alarm levels 1 and 2. If the Audio alarm output module is installed, it will also
permit setting the level at which the audio alarm will activate.
NOTE: To activate the audio alarm, the AirCheck O
2
monitor must have the audio
alarm option.
From this main menu, pushing the joystick to the right will select the first sub menu and
the digital display will scroll the following:
Set Relay 1 Alarm Threshold.
This is the gas concentration at which the instrument’s first level alarm will be
activated. To change the displayed value, push the joystick to the right to display the
first level alarm setting. The display will indicate a value between 00.0% and 25.5%.
005
20.9%
…Alarm Delay…
20.9%
…Zero Suppression…
000
..Set Alarm Thresholds..
20.9%
..Set Relay 1 Alarm Threshold…
20.9%
