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SEBA HYDROMETRIE, user manual
2.8.5.2 Calibration / Redox /2-point
The option „2-point calibration“ is accessible for the manufacturer only.
2.8.5.3 Calibration / Redox / Set reference
In this menu mode the actually used reference system of the electrode, the silver/silver chloride/chlorideelectrode (KCl 3 mol/l) or the calculation to the reference, usually valid in science and technology, the
standard hydrogen electrode (SHE) can be adjusted. The SEBATERM program indicates the set
reference system additionally to the Redox measuring value.
2.8.6 Calibration / Oxygen
In this menu the oxygen sensor can be calibrated with one point, the sensor zero-point can be
checked and if required, it can be re-adjusted. The air pressure, necessary for the measurement
and calibration, can also be adjusted.
2.8.6.1 Calibration / Oxygen / 1-point
The zero-current free sensor will be calibrated at one point. Therefore 3 possibilities are available. Two
automatic calibrations at 100% oxygen-saturated water or in steam saturated air. One manual
calibration, in which a reference value has to be inserted.
Selection of the
calibration mode
Insertion as replacement for actual air pressure of
configuration of measuring site
Press at first calibration of new sensor, slope
will be set to 100%
Insertion of actual air pressure
for the calibration
After selection of the calibration mode the actual air pressure has to be inserted (pic. 2.8.6.1.1). Also the
default value for the measuring site can be inserted. (see also 2.8.6.3). A new changed sensor, marked
with the option first calibration (pic. 2.8.6.1.1), will be set to a slope of 100 % after finishing of the
calibration. The adjustments will be confirmed with „OK“.
This is also start of the automatic calibrations. By calibrations in water the oxygen sensor will be
dipped in oxygen saturated water together with the temperature sensor. For calibration in air at first the
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