OTIS GEN II OI-6000, Operation Manual

Page: 48 / 72

OPERATION SETTINGS
42 OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.1
4.2.2 CALIBRATING THE SENSOR (MANUAL CAL)
You should ONLY perform the calibration of the sensor after the null process has been completed. For
best results, use 50% of the sensor scale of your target gas in an air balance with a flow rate of 0.25 to
0.5 LPM. The screen below will appear upon entering calibration mode. If Auto Cal was chosen during
the Product Settings and Configuration section please skip to section 4.2.3.
1. Unscrew and remove the sensor housing cap from the assembly.
2. Affix a Calibration Adapter Kit (sold separately) to the sensor housing of the device.
3. Affix a regulator to the calibration gas bottle.
4. Attach the tubing on the Calibration Adapter Kit to the regulator on the calibration gas bottle.
5. Ensure that the gas is flowing and watch the reading increase. When the reading stabilizes,
approximately 1 minute, use the ADD and SUB buttons to adjust the reading on the screen to match
the applied calibration gas concentration.
NOTICE
If the sensor responds extremely slow, or does not respond to the applied gas, it may indicate a failed
sensor element. The sensor element will need to be replaced before completing the null and calibration
process.
6. When calibration is complete, detach the Calibration Adapter Kit from the sensor housing and reaffix
the sensor housing cap. Press the MENU button to advance to the Low Alarm Setting screen.