About this task
Ensure the sensor is in clean air and follow these steps:
Figure 1. NO2 zero calibration
Procedure
- Press and hold the UP key for 3 s to initiate the calibration process.
- When the calibration is complete, the display shows DONE.
- Press MENU to advance to the next selection. A NO2 Zero Calibration Counter increments every time you perform this step and the NO2 Re-Cal timer resets whenever you perform this step.
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Attach the 10 ppm NO2 gas bottle to the regulator and firmly tighten
the regulator by hand.
Note: Do not use a sponge for NO2 gas.
- Install the cap over the NO2 pod to be calibrated.
- Turn on the regulator to begin gas application. Wait 3 to 5 mins for the sensor to stabilize, then press and hold the UP key for 3 s to initiate the calibration process.
- When the calibration is complete, the display shows DONE.
- Press MENU to advance to the next selection. A NO2 Calibration Counter increments every time you perform this step. The NO2 Re-Cal timer resets whenever you perform this step.