KROHNE OPTISENS PAC 050 EN - Manual (Page 15)

Manual OPTISENS PAC 050
15 OPTISENS PAC 050
4.1.1 Measurement
Configuration
pH/Redox
Measurement pH/Redox
Measurement pH/Redox
Measurement
Displayed is always the actual active configuration. With keyyou can switch from pH measurement to ORP
measurement. Press the key again to go back to the original setting.
4.2 pH measurement
pH measurement requires a calibration.
By means of calibration the electrode’s characteristics are determined and stored. The procedure is a
subsequent measurement of two solutions with a known pH. The pH values of the buffers used as calibration
solutions are stored in the menu basic settings.
You have to adjust the calibration data only if you want to use special calibration solutions or electrodes with
a special buffer solution.
The electrode’s slope is influenced by temperature. This influence can be compensated by manual or
automatic compensation. Manual compensation means that the temperature is entered manually. Automatic
compensation requires measuring the temperature with a Pt100 or Pt1000.
4.3 ORP measurement
ORP measurements do not require calibration or temperature compensation. Therefore the parameters
„calibration“ and „temperature compensation“ do not appear in the menu if ORP measurement has been
selected.
NOTE
The ORP measurement needs no calibration and no compensation for temperature effects. Therefore these
parameters do not appear in the menu if ORP measurement is selected.