Isfet Calibration - Knick Portavo 908 Multi Betriebsanleitung

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ISFET

ISFET 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.
Calibrating the ISFET Zero (Operating Point)
1) Select the "ISFET zero" calibration mode for setting the operating point for the first
sensor calibration.
Calibration mode Calimatic
2) Press the Start softkey.
3) Adjust the buffer value if required: default pH 7.00
4) Press the Start softkey.
5) Finally, you can Apply or Discard the calibration value for the operating point.
When you apply the calibration value, the operating point will be stored in the
device, but not in the sensor!
Keep the sensor connected to the Portavo while performing the next calibration
step. The operating point will be taken into account for the following calibration.
Calimatic/Manual/Data Entry Calibration
Follow the instructions given for pH calibration, page 23.
If you disconnect the sensor before performing the calibration (e.g., Calimatic),
you must set the operating point again as described above.
Note: To abort calibration, you can press meas at any time.
Manual
Data entry
ISFET zero (operating point)
Calibration