Chapter 2: Quick Tutorial
7
Calibrating the CO
2
Sensor (Continued)
3. Turn the IAQ Monitor on. It will display the present readings.
4. Wait for the sensors to stabilize (when the readings level off,
the sensor is stabilized)
5. Using the supplied tubing, connect a source of Nitrogen (N
2
) to
the CO
2
inlet fitting of the Calibration Adapter.
6. Press the UP ARROW button (press the UP ARROW button
one more time if the backlight was off). The IAQ Monitor will
display:
Press Record
for Function Menu
▲
/
▼
To Continue
7. Press the RECORD button. The IAQ Monitor will display:
▲
/
▼
For Choices
RECORD Selects
****Clear Data****
Press ON/OFF To Exit
8. Press the UP ARROW button repeatedly until the third line on
the IAQ Monitor displays:
** CO2 Zero Adjust **
9. Press the RECORD button. The IAQ Monitor will display the
CO
2
zero calibration menu:
Apply 100% Nitrogen
CO2 XXXppm
Press RECORD To Zero
Press ON/OFF To Exit
