PROGRAMMING
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This procedure determines the zero point of the sensor
calibration curve. To perform a zero air calibration, connect
the tube adapter, break off both ends of a VOC zeroing tube
and insert the tube into the adapter.
1. Press the [Y/+] key at the "Zero Cal?" prompt
to start the zero calibration
2. The display will read "zeroing in progress". It will
count down from 30 to 1 and then say, "please wait".
3. When the zero span is finished, the display will move
on to the span calibration.
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