MANUAL CALIBRATION
The following instructions pertain to manual calibration of the TRAK-
IT®IIIa GLT. If you are using the automatic Smart-Cal Calibration
System, the procedure is different. See the Smart-Cal sections of this
manual or consult the Smart-Cal instruction manual for details.
CARBON MONOXIDE (CO) CALIBRATION (100PPM CO/AIR)
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. Scroll with the SAVE/ZERO BUTTON (C) until CO 100PPM
is displayed. Apply 100ppm CO/Air calibration gas and press & release
the MENU BUTTON (B) to start CO 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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