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7.2
Oxygen (O
) calibration
2
IMT Analytics AG
There are two different methods of calibrating the oxygen cell. The method in which
the oxygen cell is calibrated with air only takes about two minutes. The second meth-
od consists of calibrating the oxygen cell with air and 100 % oxygen. This so-called
two-point calibration adjusts the oxygen sensor more accurately. Calibration can be
called up under Calibration and then Oxygen Sensor.
7.2.1
Calibration with air only
Make sure air is flowing through the flow channel at a rate between 20 and 30 L/min.
Then press Start Air Calibration and follow the instructions on the screen. The en-
tire process takes about two minutes. At the end of the process, a message appears
confirming that calibration was successful, or an error message appears.
7.2.2
Calibration with oxygen and air
In this calibration, the requirement is oxygen (100 %) and air at a flow between
20 and 30 L/min. In the first step, the sensor is subjected to oxygen calibration.
For this purpose, connect the device to a gas flow source with an oxygen flow
between 20 and 30 L/min and press Start Oxygen Calibration. Follow the in-
structions on the screen. In the second step, you must connect air with a gas flow
between 20 and 30 L/min. The entire process takes about four minutes.
Calibration
7
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