Trotec BM31WP User Manual

16 EN
material moisture measuring device controlled via smartphone BM31WP
Disconnecting an appSensor
Proceed as follows to disconnect an appSensor from the
terminal device:
1. Press the SENSORS button(6).
ð A list of connected and available sensors will be
displayed.
2. Select the line with the appSensor to be disconnected and
swipe left at the red marking.
3. Confirm your input.
ð The appSensor is now disconnected from the terminal
device and can be switched off.
4. Alternatively, you can press the Menubutton(11).
ð The context menu opens.
5. Press the Disconnect sensor button(14).
6. Confirm your input.
ð The appSensor is now disconnected from the terminal
device and can be switched off.
Switching off an appSensor
Info
Always terminate the connection between appSensor
and app before you switch off the appSensor.
Proceed as follows to switch off an appSensor:
1. Press and hold the On/ off/ measurement button(3) for
approx. 3seconds.
ð The LED(2) on the appSensor goes out.
ð The appSensor is switched off.
2. You may now exit the Trotec MultiMeasure Mobile app on
the terminal device.
Measuring principle
The measuring device at hand serves for the rough
determination of the material or wood moisture content
according to the dielectric measuring principle. Fields of
application include the non-destructive moisture measurement
of sawn timber, lumber and firewood as well as of mineral
building materials.
The dielectric measuring method is an indirect measurement
method, since the moisture content of the measured material is
deduced from the changed dielectric permittivity.
Influencing variables suitable to change this parameter, e.g.
electrically conducting materials or dissolved salts, hence also
have a direct influence on the determined measured values.
Since the exact composition of building materials is generally
unknown before a moisture measurement, the displayed
measured values can only be regarded as an indicator of the
moisture content.
General notes on use
Calibration curves for measuring the moisture level in different
mineral building materials, hardwood, softwood and chipboard
are stored in the device. If precise material moisture values are
required, an additional control measurement applying the Darr
procedure is recommended. Especially for precise wood
moisture measurements for other wood temperatures or with
due regard to the type and bulk density of a certain timber it is
recommended to use a wood moisture measuring device with
temperature comparison function and selection option for the
specific wood type calibration.
• When selecting the measuring positions observe the
following:
– Always measure the material moisture at three different
positions in order to achieve a sufficient accuracy by
means of the arithmetic average.
– Do not measure the face, because there are mainly dry
areas.
– Preferably do not measure at cracks, branches or resin
pockets either.
Notes on use regarding the material moisture measurement
No further settings are required for the quick determination of
the material moisture at the device. Nevertheless, when
assessing the measurement results one has to bear in mind that
the results can be influenced by various factors.
• The measurement's accuracy depends on the contact
pressure of the measuring electrodes. Ideally, they should
be applied with a steady contact pressure of approx. 10N
(this corresponds to approx. 1kg of weight force), however
not bent to the point of overlapping.

Trotec BM31WP Specifications

General

Brand	Trotec
Model	BM31WP
Category	Measuring Instruments
Language	English