Table of Contents
Advertisement
Measured Variables and Operating Menus for Potentiometric Sensors
8.5.1
Description of the Calibration of pH Sensors
8.5.1.1
2-Point Calibration
2-Point Calibration
Recommended as the standard method
Calibration of pH sensors with temperature as the correction variable
When calibrating with temperature as the correction variable, the temperature of the
buffer solution must be set in "manual" operating mode before calibration.
In "Automatic" operating mode, the temperature sensor must be immersed in the
buffer solution. The calibration values are then calculated whilst taking into consider‐
ation the buffer temperature.
calibration pH
zero p. :
0.0 mV
slope
25°C
59.16 mV/pH
Permanent display 1
Fig. 44: Calibration of pH sensors
88
Temperature setting and specification only with correction value
calibration
sensor in buffer
1 !
7.56 pH
33.0°C
calibration
sensor in buffer
2 !
4.12 pH
33.0 °C
calibration
zero p.:
-2.1 mV
25 °C
slope
59.07 mV/pH
calibration
calib. 1 active
please wait !
6.96 pH
33.0°C
calibration
calib. 2 active
please wait !
3.97 pH
33.0 °C
calibration pH
buffer1:
7.00 pH
buffer2:
33.0°C
calibration
buffer1:
7.00 pH
buffer2:
4.00 pH
33.0 °C
= automatic timing
A0060_GB
Advertisement
Table of Contents
