Conductivity Calibration; Auto Calibration - Knick Portavo 908 MULTI Instructions

Calibration

Conductivity Calibration

1) In measuring mode, press the Menu softkey.
2) Select "Calibration" and confirm by pressing enter.
3) Select the desired "Calibration mode" and confirm by pressing enter.
4) The "TAG" menu allows the sensor TAG to be edited.
To do so, set "TAG" to On in the configuration menu (default setting: Off).
5) Perform the selected calibration as described on the following pages.
Follow the instructions on the display.
Note: Calibration is not possible when the device is connected via USB with the
Paraly SW 112 software.

Auto Calibration

(Automatic calibration with specification of the calibration solution used)
NOTICE!
• Make sure that the values of the calibration solutions used correspond exactly
to those specified in this manual.
If not, the resulting cell constant will be incorrect.
• When calibrating in a liquid, make sure that the sensor, the separate tempera-
ture probe (if present) and the calibration solution have the same temperature.
Only this ensures that the cell constant is determined correctly.
1) Select the calibration solution:
• NaCl 0.01 mol/l
• NaCl 0.1 mol/l
• NaCl sat.
• KCl 0.01 mol/l
• KCl 0.1 mol/l
• KCl 1 mol/l
2) Press the Start softkey.
3) Immerse the sensor in the solution and press Continue.
4) Finally, the calibration data record will be displayed.
You can Apply or Discard these values.
Note: To abort calibration, you can press meas at any time.
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