8.2.3 Calibration: Paramagnetic oxygen sensor
AUTOCAL O2 sens: YES
AUTOCAL with N2: NO
Start cal. O2 zero
Start cal. O2 span
823
In this menu you can call the following functions for the para‐
magnetic oxygen sensor:
• "AUTOCAL O2 sens."
– YES (factory setting): The zero point or sensitivity of the
paramagnetic oxygen sensor is set with each AUTOCAL.
Selection of zero point or sensitivity is carried out using
the parameter in the 2nd line 'AUTOCAL with N2'.
– NO: No calibration of the paramagnetic oxygen sensor
during an AUTOCAL.
• "AUTOCAL with N2"
– YES: The AUTOCAL is carried out with nitrogen, where the
zero point of the sensor is calibrated.
– NO: (factory setting) Calibration of the span with ambient
air.
• "Calib. O2 zero point"
This function is used to calibrate the zero point of the para‐
magnetic sensor
• "Calib. O2 range"
This function is used to calibrate the full-scale value or sen‐
sitivity of the paramagnetic sensor and to set the setpoint.
8.2.3.1 Calibration: O2 paramagnetic: Calibrating the zero point
You can calibrate the zero point of the paramagnetic oxygen sensor using this function. You
must use nitrogen as the zero gas.
Zero calibration
0.18 % O2
Nitrogen flow please
Correct with ENTER
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If the adjacent display appears, start the ow of nitrogen and
wait until the displayed value has stabilized. Subsequently begin
the calibration by pressing the <ENTER> key.
Calibration of the zero point must be carried out regularly to guarantee the accuracy of the
paramagnetic oxygen sensor. Information on the achievable accuracy and the calibration cycles
can be found in section Technical specications (Page 32).
8.2.3.2 Calibration: O2 paramagnetic: Calibrating the measuring range
You can calibrate the sensitivity of the paramagnetic oxygen sensor and set the setpoint using
this function.
Functions
8.2 Calibration
ULTRAMAT 23
Equipment Manual, 04/2022, A5E37100388-012 119
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