Deleting Calibration Points - Novasina LabTouch-aw Operating Instructions Manual

Note:
Please keep in mind which SAL-T has been placed into the chamber.
• Go to "Chamber settings" -> "Sensor calibration..." -> "Calibrate sensor"
• Possible calibration points will be displayed thereby the most probable one
is green colored. The pink colored value is the deviation of the actual aw
value in the chamber compared to the reference value or in other words,
how much the measured value will be corrected by the calibration at this
point once executed.
• Select now the appropriate, displayed aw-value according to the inserted
SAL-T standard. A pop-up window appears asking for confirmation if the
calibration should really be performed. Double-check if you have selected
the correct reference value and press [Yes].
• If the sensor is password protected, enter it with the help of the displayed
keyboard (see chapter 8.7).
Important:
There is a default password (8808) installed from factory.
• An information screen appears if the calibration has been performed and
stored correctly. Press [OK] to confirm. Afterwards, the instrument switches
to the main measurement screen.

Deleting Calibration Points

8.5.
Note that a deletion of one calibration point just deletes the stored value, not
the point itself. Thus, if the respective SAL-T standard is placed into the mea-
surement chamber, the system recognizes the point again. This procedure
is normally not required but makes sense if one of the following situations is
present or happened:
• If there is a requirement to calibrate a sensor completely. It is then useful
to delete the stored calibration points to see the ones which had been
already calibrated during this run, otherwise, "cal" is still displayed behind
every calibrated value.
• If a complete calibration is required but you do not have all of the supplied
SAL-T standards available. Keep in mind that a deleted point is much
better than one calibrated the wrong way. The LabTouch-aw calculates
the missing point from the two nearest ones (mostly one above and one
below of the deleted point).
8.5.1 Perform a Deletion of a Cal Point
• Go to "Chamber settings" -> "Sensor calibration..." -> "Clear calibration
point". A list with all calibrated points is displayed.
• Select the point to be deleted and confirm the request with [Yes].
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