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8. Calibrating CO/CO
Sensor
2
8.3 Calibration Procedure – SPAN Calibration
Display
*Concentration Setting Range
CO: 20-550ppm, CO2: 800-5500ppm
Connect a Span gas cylinder to the IAQ Monitor as described in the
previous page.
Press
key to bring up the MENU screen.
key to select "7.CALIBRATION", and press
Use
Use
key to select the sensor that you want to calibrate
("2.CO" or "3.CO2"), and press
(CO2 is selected in this example.)
Perform a calibration by using span gas.
Press
key.
Use
key to enter a concentration value displayed on the
SPAN gas cylinder, and press
Enter the concentration value shown on SPAN gas cylinder label.
Reading before calibration
After setting the concentration, select "YES" by using
and press
key.
Procedure
key.
key.
38
key.
key
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