QRAE II
User’s Guide
Page 83
Note:
If you see the following message, check that the gas is flowing and the hose is
attached:
No Gas Flow... Apply gas or hit any key to start.
When calibration is complete, you will see the screen change between these two:
Multiple Sensor Calibrated!
and
CO = Pass
H2S = Pass
O2 = Pass
-------
LEL = Pass
A sensor calibration failure is indicated like this:
CO = Fail
H2S = Pass
O2 = Pass
-------
LEL = Pass
If a sensor fails, try calibrating again. If calibration fails again, replace the sensor.
Single Sensor Calibration
This procedure determines the second point of the sensor calibration curve for a single
sensor. The display counts down from 60 to 0 seconds, and then shows the name of each
sensor, whether it passed or failed calibration, and the calibrated value for each sensor.
Select the sensor to calibrate by pressing [MODE] until the sensor’s name is highlighted.
Then press [Y/+] to toggle the selection on (indicated by an asterisk, *) or off (no
asterisk).
After you have selected the sensor you want calibrated, it is time to perform the
calibration.
1.
Attach the Calibration Adapter to the QRAE II.
2.
Attach the regulator to the Calibration Gas cylinder.
