OTIS OI-6000K NXP Series, Operation Manual

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OPERATION SETTINGS
37 OI-6000K-X-X-X-NXP-X OPS_GUIDE_REV 1.0
4.2 SENSOR CALIBRATION
Calibration is the process of evaluating and adjusting the precision and accuracy of measurement
equipment. Although Otis calibrates every device at the factory, for best accuracy, the detector SHOULD be
calibrated in the environment where it is installed.
It is imperative that the calibration occur as part of the installation process, and then EVERY thirty (30) days
thereafter. Days since last calibration should NEVER exceed ninety (90) days. Otis recommends that you
calibrate your device regularly to ensure proper functionality and a safe work environment.
4.2.1 NULLING THE SENSOR (AUTO NULL)
The first step of calibration is nulling the sensor, sometimes referred to as “setting the zero” or
“zeroing the sensor.” The nulling process MUST be performed in known clean air, with no
contaminants or hazardous gasses present, before calibrating the sensor assembly. If air quality
cannot be guaranteed, a bottle of zero air will be required to properly null the sensor.
1. While the product is in normal operating mode, press the MENU button to activate the
operation settings menu.
2. Press the ADD button to begin the null process and advance to the clean air confirmation
screen.