Wohler HBF 420, Руководство по эксплуатации

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Component Explanation
41
EN
3.3 Display and Keys
Fig. 3: Dielectric measurement
A square at the top of the display with the opening
facing downwards and the symbol ((•)) show that
the measuring mode "dielectric measurement"
has been chosen. Underneath the measured
humidity is indicated in digits.
Fig. 4: Measuring mode "dielectric meas-
urement"
A square with the opening facing downwards at
the bottom of the display and the symbol ((•))
show that the measuring mode "resistance meas-
urement" has been chosen. Underneath the mea-
sured wood humidity (u) in % is indicated.
3.4 Function
The Wöhler HBF 420 offers two different measurement modes:
- With the dielectric measurement moisture profiles of building material can be done:
The probe for dielectric measurements at the top of the moisture meter facilitates rapid
detection of moisture in all kinds of building materials through an uncomplicated meth-
od of measured data acquisition. In addition, it is quickly possible to gain an overview
and localize critical points by creating a quasi two-dimensional moisture profile. This is
where assigning material codes enables an informed judgment of different materials to
be made.
- Electrical resistance measurement for determining the wood moisture precisely:
The resistance measurement uses the needles at the base of the instrument. In order
to obtain an exact measurement, the respective material is considered by entering the
appropriate code.
As the relative humidity depends on the material temperature, the meter will automati-
cally perform a temperature compensation on the basis of the temperature value en-
tered by the user.
In both measuring modes the two optical alarm limits help to evaluate the moisture
content, e.g. when performing general measurements.