
7
Press and release the button to start the switch PPM on.
Press and hold the button for three seconds until 'Zero Reset' is shown.
Release the button.
Start the purge gas running at 5 - 10 LPM.
Purge the pure argon through the hose and allow the BPM to reach a
stable reading (approx. 2-3 mins.)
Press button for three seconds until 'Zero Save' screen is shown. Release
the button.
The BPM is now Zeroed for use.