Calibrating The Co2 Sensor - Honeywell IAQPoint User Manual

Calibrating the CO
The span calibration function is represented by the LED blink code 4,
and the calibration procedure is as follows:
Note: When calibrating a duct mounted unit,it is best to remove the unit
from its base to ensure proper calibration.
• Before starting the calibration (using the programming menus),
connect the regulator to the gas cylinder.
• Adjust the flow rate to 0.1 L/min.(for the 2000 ppm range)
• Connect the tubing from the regulator to the sensor, as shown in
the image at left.
• Press and hold the pushbutton and count 4 blinks and release the
pushbutton.
• the LED will blink the 4-blink code three times (4 blinks, pause; 4
blinks, pause; 4 blinks, pause) to request confirmation to calibrate
the span.
• Press the pushbutton once and hold for one blink only to confirm
(you must confirm within 32 seconds or the screen will return to the
main menu). The unit begins the calibration (throughout the
calibration process, the LED will blink 5 times every 4 seconds).
If the span calibration is successful, the LED remains on without
blinking.
If the calibration failed, the LED will blink non-stop.
M-511703
Sensor
2
Start exposing the sensor to the calibration gas at least
10 minutes before starting and throughout the calibration
process.
IAQPoint User Manual
Honeywell
Using the IAQPoint
Calibrating the Unit
23