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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 (eg 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.
Zeroing the O
ARA
2
The ARA O
detector factory default settings will remind the user to perform a fresh air zero every 30 days.
2
The user will be prompted by the screen blinking
How to zero the Oxygen sensor
IMPORTANT:
Ensure you are in a clean fresh air environment.
Pioneering Gas Sensing Technology.
, please see zeroing instructions below.
If the detector is due a fresh air zero, the screen display will alternate
between
and 20.9% (if display set to sensor reading) or
Life Remaining (if display set to life remaining)
Page 15 of 27
ARA Instrument User Manual V1.1
.
to displaying the actual gas
) will no longer
) reminder. This alarm will
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