MANUAL CALIBRATION
HYDROGEN CYANIDE (HCN) CALIBRATION (HCN 10 PPM)
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 the SAVE/ZERO BUTTON (C) until the
bottom line reads HCN 10ppm.
Apply 10ppm HCN/N2 to the instrument and press & release the MENU
BUTTON (B) to start HCN 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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