Cal Sensor - Oldham OLCT 80 User Manual

Cal sensor

Calibrate the main sensor (adjust zero and sensitivity).
How to access
See Figure 31.
Tree structure
Figure 32: the Calibration menu. Press ESC repeatedly to return to the reading
display.
Menu Description
Calib. Gas Configure the value of the calibration gas to be used.
Adjust.'0'' ■
Place the injection hood over the device and inject clean air from
the bottle (flow rate of 30-60 l/h).
■
Wait for the reading to stabilize (at least 2 minutes).
■
Press Enter to confirm the zero.
Note: a CO2 sensor pack must always be zeroed using
reconstituted air or nitrogen. Never use ambient air as the zero
since it naturally contains 300-500 ppm of CO
Adjust. 'S''
Place the calibration hood over the detector head and open the
valve on the bottle of calibration gas (flow rate of 30-60 l/h).
The reading displayed will fluctuate until it reaches the stabilization
point. Wait for the reading to stabilize (at least 2 minutes).
Press Enter to confirm the reading.
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