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MANUAL CALIBRATION
COMBUSTIBLE GAS CALIBRATION
(1.1% PROPANE or 50% LEL PROPANE)
From the working display press & hold the TICK/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 TICK/
MENU BUTTON (B) once. The bottom line will read AUTO CAL.
Press & release the SAVE/ZERO BUTTON (C) to scroll until the bottom
line reads 1.1%V/V. Apply 1.1% propane (50% LEL propane) to the
instrument. Immediately press & release the TICK/MENU BUTTON (B)
to start propane calibration.
When the reading is satisfactory, the display will flash DATA SAVED
indicating that calibration is complete for that sensor. Do not remove the
gas until the second DATA SAVED flashes. Two calibrations take place
during the 1.1%V/V propane calibration.
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.