Maintenance and cleaning
17
Short-version: Oxygen signal: 1-Point-calibration
1.
Place the sensor in air
2.
Menu / Sensors / O2S / Sensor calibration / O2 %
a.s. / 100% a.s.
3.
Wait 120 s.
4.
Press OK. Finished!
Oxygen signal: 2-Point-Calibration
For the 2-Point-Calibration perform at first the previous step
(calibration of calibration point 2, e.g. in air). Additionally,
perform the same procedure when the sensor is submerged
in oxygen-free water.
You can create an oxygen-free solution by adding 1 tea
spoon of sodium sulphite in 100 ml water (concentration 2
mol / l). Please wait 15 minutes until all oxygen is reduced.
Dip now the sensor in the solution, wait until the
measurement value is stabilized and select in the menu:
0% a.s. (calibration point 1). Save this calibration point.
More background information about the calibration of
oxygen sensors can be found in the DIN EN 25814.
Summary of Contents for O2S-20-SC
Page 1: ...Oxygen Sensor O2S Manual...
