Crowcon Gasman User Manual page 26

Gasman gas test accessory kit
4. Gasman will display a progress bar. Apply the gas whilst the
progress bar is counting down.
Gasman will display 'PASS' or 'FAIL'
In the event Gasman displays 'FAIL', please see the troubleshooting
guide in the first instance or contact Crowcon.
5. To abort the gas test press the button at any time whilst the test is
in progress.
6.3 How to perform a one button
calibration test
To perform a one button calibration test, you must first perform a Zero
on your Gasman unit.
1. Ensure you are in clean air.
Double click the button and select Zero from the Options menu.
Gasman will perform a Zero.
To perform a one button Calibration, complete the next steps within 15
minutes of completing the Zero.
2. Follow steps 1 to 3 given in 6.2, Gasman will display 'CAL'
and '????' alternately. Press the button to confirm one button
Calibration.
If the button confirmation for calibration is not made within 10
seconds then the process will revert to test as in 6.2.
3. Apply calibration gas following step 4 in 6.2.
4. To abort the Calibration test press the button at any time whilst
the test is in progress.
Your Gasman unit will adjust the value for the gas channel to match the
stored calibration gas value within the sensor i-module.
If your Gasman unit does not calibrate successfully, Gasman will display
'FAIL'. Your Gasman unit must be sent for re-calibration.
Gas Test 'pass' and 'fail', and calibration 'pass', 'fail' and values are stored
in the Event log.
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Gasman