Sensor Calibration cont...
3. Replace the rainguard of the sensor being calibrated with an Otis OI-410 Calibration Cup.
4. Apply a known calibration gas to the OI-410 Calibration Cup that is attached to the sensor housing.
5. Touch
MENU
(SELECT) to calibrate (Cal) Sensor 1
.
6. The Display Screen should resemble the following illustration:
7. Once the number on the Display Screen has stabilized (or after approximately 90 seconds), touch
ADD
(increase)
or
SUB
(decrease) to manipulate the reading shown on the Display Screen until the displayed reading matches that
of the calibration bottle.
NOTE: If the Display Screen is showing “O”, touching ADD or SUB will not affect the reading.
8. Once the number displayed on the screen matches that of the calibration bottle, touch
MENU
(BACK) or
BACK
(BACK).
9. Unscrew the OI-410 Calibration Cup.
10. Reattach (screw on) the sensor rainguard to the sensor housing.
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