pH measurement
pH measurement
62
BA61101/08.00/IWa/MLP5-E2
BA61101/08.00/IWa/MLP5-E2
63
ÃCt1 AR
AutoCalTEC pH
T=+02 °C
Ï
Enter temperature:
: Select figure.
: Set figure.
Ãstop AR
AutoCalTEC pH
24
°C
5
mV
To go on: see Calibration
with AutoCal TEC.
pH measurement without temperature probe
Ãmeth.
Âmenu
ÀCal
ÁpH
AR
Ãmeas AR
pH
T=+ 20 °C
Âmenu
È
Select pH measurement
without temperature probe.
Immerse pH electrode into sample.
Determine temperature of
sample solution.
Ãmeas AR
pH
T=+02 °C
Âmenu
Ì
Enter measured
temperature value:
: Select figure.
: Set figure.
Then: see "pH measurement with AutoRead".
Temperature compensation
Temperature dependent are:
- the slope of the electrode,
- the pH value of the sample and buffer solution
- the offset voltage of the electrode.
The temperature compensation considers the temperature
influence on the slope of the pH electrode.
The pH value of measuring samples is displayed at the temperature
of sample solution in conformity with DIN 38404.
The temperature dependent pH values of the 9 usable buffer
solutions are stored for use with the AutoCal procedure.
The instrument requires the temperature of the buffer solution and
the sample solution when calibrating or measuring pH. The
temperature should be entered manually or acquired with a
temperature probe.
The temperature difference between calibration and sample solution
should not be more than 5K.
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