pH 170/
pH 296
Measuring Mode
158
Note:
The calibration can be terminated by pressing the ESCAPE key.
−
Rinse the measuring chain and immerse it in the 1st buffer solution.
−
Use the ENTER key to start the calibration.
The measurement runs until a stable measuring
value is reached (AR flashes / display in mV).
Note:
In manual temperature compensation, the buffer
temperature set up, otherwise the current buffer
temperature, is displayed.
Duration of the calibrating process:
Min. 30 sec to max. 10 min
Note:
If no stable measured value is achieved after 10
minutes, the "
CAL
Err
" error message appears,
see also parameterization reports.
−
Rinse the measuring chain again and
immerse it in the 2nd buffer solution.
−
Start the calibration again.
Note:
The temperature set up in manual temperature
compensation with “
Ct1
“ continues to be valid.
After successful calibration, the display appears
showing the slope and offset voltage
("Asymmetry"),
e.g.
– 59.1 mV/pH,
ASY 3 mV.
Admissible ranges:
Slope
- 62.0 to - 50.0 mV/pH
ASY
- 45 to + 45 mV
−
Use the ENTER or M key to go back to the
measuring mode. At the same time, the
"freezing" of the recorder output and the
switching relay lifted.
