4.5
Guide to push-button calibration
Push-button calibration needs to be done if
Power up calibration at first
time operation
was not successful or the unit was changed to another
location or a significant change of DK was present after changing the
material.
Calibration with uncovered probe only
This is the simplest method and,
therefore, is recommended.
If a too small change of capacitance
between uncovered and covered probe
is present, a higher sensitivity can be
selected (1 pF or 0.5 pf).
For a higher change of capacitance and
excessive build-up, the sensitivity can be
reduced (4 pF or more).
For the calibration procedure, see
Powering up the first time (calibration)
.
Calibration with uncovered and covered
probe
Sets the switching-point in the middle
between uncovered and covered probe
capacitances. It ensures the maximum
switching distance to both uncovered
and covered probe capacitance, and
helps to prevent material build-up.
For materials with low DK values and
therefore smaller capacitance
differences for covered and uncovered
states, this method is recommended.
The DK values are not required to be
known.
For the calibration procedure, see
Powering up the first time (calibration)
.
Quick Start Guide
October 2020
24
Quick Start Guide
