MANUAL CALIBRATION
COMBUSTIBLE GAS CALIBRATION
100% VOLUME METHANE
NOTE:
After calibration of 100% Methane, it is recommended to auto-
zero the unit before use.
From the working display press & hold the MENU BUTTON (B) until the
top line reads USER MENU. Press & release the SAVE/ZERO BUTTON
(C) until the bottom line reads CAL. Press & release the MENU BUTTON
(B) once, the bottom line will read AUTO CAL.
Press & release SAVE/ZERO BUTTON (C) to scroll until the bottom line
reads 100%V/V. Apply 100% methane to the instrument. Immediately
press & release the MENU BUTTON (B) to start 100% methane
calibration.
When the reading is satisfactory, the display will flash DATA SAVED
indicating that calibration is complete for that sensor. The date for CAL
PAST DUE is automatically reset for that sensor as well.
Scroll with the SAVE/ZERO BUTTON (C) if you need to calibrate another
sensor. When finished, remove and shut off the gas supply. Press &
release the POWER/MUTE BUTTON (A) to return to the working display.
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