8.5.1.2 1-Point Calibration
1-Point Calibration
Recommended only for special appli‐
cations e.g swimming pool water
Calibration of pH sensors with
temperature as the correction variable
When calibrating with temperature as
the correction variable, the tempera‐
ture 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 consideration the
buffer temperature.
One test container with a buffer solution is
required for calibration.
1.
Select Calibration menu
2. Immerse the sensor in the test con‐
tainer with buffer solution (e.g. pH
7)
3. Move the sensor gently until the pH
value displayed no longer changes
4.
Then press
ð
Calibration is running
A buffer value is suggested
once the waiting time has
expired.
5. If necessary adjust the pH value
displayed using keys , and
to the actual value of the buffer sol‐
ution in the test container
6.
Then press
7.
Then press
ð
The settings recorded will be
displayed.
8. If the calibration result is correct,
confirm with
ð
The new calibration is only now
applied.
Should the result of the calibration lie out‐
side of the specified error limits, an error
message will appear, see
Ä Chapter 8.5.3
‘Calibration of pH Sensors. Description of
the Error Messages ’ on page 91
. In this
case the current calibration will not be
applied.
Measured Variables and Operating Menus for Potentiometric Sensors
90
To Next Page
Loading...
Need help?
General
