Download Gas Detector Array 2 User Guide

CLEANING MODE
The CLEANING MODE is an automatic self-protection working function that is
automatically launched each time that one of the eight channels responds to the
maximum on a determined substance. This operation can last some seconds until
the concentration level of that substance decreases to accepted values.
Unlike other operating modes you will not need to use any library on the cleaning
mode since this is a self-protection mode.
If there is enough time before launching a measurement, it is recommended to
run the device in cleaning mode for about 5 to 10 minutes.
It is also recommended to run the device in Cleaning Mode for an equal period
after each measurement until the channels do not detect any signals any more.
The objective is to be sure that the channels are clean before starting a new
measurement or connecting the device to an external filtering unit.
BASELINE ACQUIREMENT
The zero point process !
WHAT IS SO IMPORTANT ABOUT THE BASELINE ACQUIREMENT?
If remnant compounds are left in the analytical system, these may cause a slight
offset of the measurement.
This situation will reveal signals which may in certain occasions disturb the ongoing
identification.
Therefore, the baseline acquirement process will reset and balance the different
channels (sensors) of the GDA device.
It is recommended to do the baseline acquirement,
when the instrument had enough time to clean up after the last measurement
when the signals of the channels do not vary significantly
In order to act safe, we recommend doing the Baseline Acquirement each time
before performing an important measurement. Depending on the conditions, it takes
about one minute to be completed.
For practical information, see the Title „Launching the Baseline Acquirement”.
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