ION ARA Series Instrument User Manual page 15

The bump test interval can be changed by the user (via the IR-Link). The interval can be set from 1 to 365 days.
To deactivate this reminder, set the interval to zero.
NOTE: The factory default is set to zero therefore the bump test is deactivated.
NOTE: We recommend bump testing prior to each use to verify the sensor responds to gas.
If the detector needs bump-testing, the icon (
blinking. The top/right and top/left LEDs will also start to flash alternately at intervals of 32 seconds.
To conduct a manual bump test, the following equipment will be required.
1) Ara calibration cap (included with each Ara)
2) Appropriate calibration gas
3) Manual Fixed flow regulator Ion Science recommend 0.3L/min (Alternative 0.5L/min)
4) A suitable length of tubing to connect the calibration cap to the fixed flow regulator (e.g., Tygon)
To conduct a bump test, press the button once and wait until the screen displays
Connect the calibration cap to the sensor inlet (a click can be heard to indicate its seated correctly) then apply
the relevant gas for several seconds until the display changes from
concentration or life remaining. This indicates a successful bump test. The bump test icon (
be displayed. Switch off the fixed flow regulator and disconnect the calibration cap. The ARA is now ready for
use.
NOTE: If the button is pressed and the instrument is not exposed to gas it will time out after 45 seconds and
revert back to displaying the default screen along with bump test flashing icon (
be logged as an event and stored in the ARA.
Unrivaled Gas Detection.
ARA Instrument User Manual V1.1
) on the bottom right-hand side of the screen will be
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to displaying the actual gas
) will no longer
) reminder. This alarm will
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