Dielectric Measurement - Wohler HBF 420 Bedienungsanleitung

Measuring
5.2

Dielectric measurement

Fig. 11: Dielectric measurement
54
Non-destructive measurements taken with the
dielectric probe at the top of the Wöhler HBF 420
are informative measurements for orientation pur-
poses; the displayed values do not represent ex-
act measurement results.
The measurement is ideal for detecting critical
moist points in building materials or for creating a
moisture profile. Due to the fast functioning meas-
urement value display, it is possible to take meas-
urements with the dielectric probe at many differ-
ent points on the surface in quick succession.
Thus, critical points can be recognized immediate-
ly and further targeted measures undertaken,
such as taking a sample of the material for later
analysis.

Switch on the meter, enter the material tem-
perature, select the measurement mode "die-
lectric measurement", enter the material code
and perform the zero calibration (see chapter
4).

Press the Escape key (3) to close the settings
menu and the M key (2) to bring up the meas-
uring mode.

Hold the white probe at the top of the meter
against the surface to be measured. While
measuring, the whole probe-area must have
contact to the surface.
NOTE!
In doing so, hold only the lower part of the instru-
ment to ensure that your hand affects the meas-
urement results as little as possible. Maintain a
distance of approx. 10 - 15 cm to the wall / ceiling
corners.

To perform the measurement, keep the M key
(3) pressed.