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USER MENU
CAL
See Calibration section on Page 38.
O2 TEST
From the working display press & hold the MENU BUTTON (B) until the
top line reads USER MENU. Press & release the SAVE/ZERO BUTTON
(C) to scroll until the bottom line reads O2 TEST.
Apply recommended gas mixture void of oxygen, such as 100%
Methane or 100% Nitrogen and press & release the MENU BUTTON
(B) to start the test.
A 20 second countdown will begin. If the sensor shows proper depletion
within this period, PASSED will flash on the display.
Press & release the POWER/MUTE BUTTON (A) to return to the
working display.
If the O2 sensor does not respond properly within the 20 second test,
FAILED will appear on the display. Remove the instrument from service.
Consult the factory in the event of any failure.
To exit this menu, press & release the POWER/MUTE BUTTON (A) to
return to the working display.