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Operation - Hilti PD 40 Bedienungsanleitung

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6.6.4 Measuring with the aid of target objects 5 6
When taking measurements to outside corners (e.g. on
outside walls of buildings, perimeter fences, etc.), boards,
bricks or other suitable objects can be held against the
corner and used as the target. Use of the PDA 50, PDA 51
or PDA 52 target plate is recommended for long distances
and in unfavorable light conditions, e.g. in strong sunlight.
en
6.6.5 Measuring in bright conditions
We recommend use of the PDA 50, PDA 51 or PDA 52
target plate for long distances and in very bright light
conditions.
6.6.6 Taking measurements to rough surfaces 7
When measuring to rough surfaces, e.g. rough plaster
etc., an average distance value is measured with the
center of the laser spot weighted higher than the edges
of the laser spot.
6.6.7 Taking measurements to curved or inclined
surfaces
If the laser beam strikes the target surface at a very
narrow angle, the light reflected may be inadequate.
Conversely, too much light may be reflected toward the
tool in situations where the laser beam strikes the target
perpendicularly. We recommend use of the PDA 50, PDA
51 or PDA 52 target plate in both of these situations.
6.6.8 Taking measurements to wet or shiny
surfaces
As long as the range meter can be aimed directly at
the surface, the distance to the target will be reliably

7 Operation

7.1 Distance measurements
NOTE
With all functions of the tool, each step in the operation
is always indicated in the display.
NOTE
Continuous measuring mode can be used with all func-
tions in which individual distance measurement is pos-
sible.
NOTE
If measuring errors occur during continuous measuring,
and continuous measuring mode is canceled by pressing
the "Measure" button again, the last valid measurement
will be displayed.
24
measured. With highly reflective surfaces, a reduction in
range must be expected and the distance to the actual
point of reflection may be measured.
6.6.9 Taking measurements to transparent surfaces
It is generally possible to measure distances to trans-
parent or semi-transparent materials, e.g. liquids, poly-
styrene foam, etc. Light penetrates these materials, how-
ever, and measuring errors may therefore occur. Measur-
ing errors may also occur when measurements are taken
through glass or if objects are present within the line of
the laser beam.
6.6.10 Measuring range
6.6.10.1 Increased range
The range of the tool is generally increased when meas-
urements are taken in the dark, at dawn or dusk and
when the target and/or the tool is shaded from bright
light.
Use of the PDA 50, PDA 51 or PDA 52 target plate also
increases the range of the tool.
6.6.10.2 Reduced measuring range
Measuring range may be reduced in bright conditions,
e.g. in bright sunlight or when working under very power-
ful floodlights.
The range of the tool may be reduced when measure-
ments are taken through glass or when objects lie within
the path of the laser beam.
The range of the tool may be reduced when measure-
ments are taken to mat green, blue or black surfaces or
to wet or shiny surfaces.
7.2 Adding distances
+
17.838
Individual distances can be conveniently added. This is
useful, for example, for determining the total length of
12.349
m
5.489
m
m

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