6 | Operation and maintenance
G 1501
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B-H86.0.12.DB2-2.1
6.3
Calibration and adjustment
6.3.1.1
Explanation
The following steps describe how to calibrate the product.
To achieve a precise measurement, observe the following points.
NOTE
If possible, the calibration range should overlap the measuring range. To achieve this,
it is recommended to use buffer solutions for measurements as follows:
– below pH 7 uses pH 7.0 and pH 4.0 buffer
– above pH 7 uses pH 7.0 and pH 10.0 buffer
NOTE
Calibrations are only possible in a temperature range from 0 °C to 60 °C! We recom-
mend performing calibration at temperatures between 10 °C and 40 °C.
NOTE
Calibration should be conducted at the same temperature used for the measurement
in the medium. To equalize the temperatures of the buffer solutions and electrode,
they should be stored together for a while in a place that is protected against draught.
NOTE
If a temperature sensor is not connected, measure the temperature of the buffer solu-
tion with a thermometer. The exact value of the buffer solution is temperature depend-
ent and can be determined based on the tables provided.
NOTE
Always use fresh buffer solutions!
