• On request by the user from the MENU
The zero sequence is as follows, ensure the on screen commands are followed
or the analyzer may not zero correctly.
Ensure the probe is removed from the vehicle exhaust and is sampling fresh air,
in the garage environment this should be ½ meter or 18 inches above the
ground. Once this is done press to activate the pump.
WARNING: The sensors will only be reset if the probe is sampling fresh air
for at least 60 seconds.
Once the zero is complete the screen will return to the MAIN DISPLAY.