Operation; Distance Measurement - Hilti PD-I Mode D'emploi

6.5 Measuring aids
6.5.1 Measuring using the spike 3 4
The spike can be used when measuring diagonally across
rooms or from inaccessible corners.
1. Fold out the spike through 90°.
The spike can then be used as the contact point.
2. Fold out the spike through 180°.
en
The measuring reference point is then set auto-
matically. The tool detects the extended measuring
reference.
6.5.2 Measuring using the PDA 50/51/52 target
plate 5
NOTE
For reliable distance measurements, care should be taken
to ensure that the laser beam strikes the target plate at
right angles as far as possible.
NOTE
When the target plate is used and very high accuracy is
required, 1.2 mm should be added to the measurement
obtained.
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.
The PDA 50 target plate is made of durable plastic with
a special reflective coating. Use of the target plate is
recommended at distances greater than 10 m in unfavor-
able light conditions.

7 Operation

7.1 Distance measurement

NOTE
Generally speaking, the individual steps in all functions
are always assisted by the graphic symbols displayed.
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.
NOTE
After starting a function, the laser beam is already
switched on.
NOTE
You will obtain the most accurate results when all meas-
urements within one function are taken from the same
point of contact and axis of rotation.
26
The PDA 51 target plate has no reflective coating and its
use is recommended in unfavorable light conditions and
at short distances.
The PDA 52 target plate is equipped with the same
reflective coating as the PDA 50 but is considerably
larger in size (210 x 297 mm). This makes it much easier
to aim the tool at the target plate over long distances.
6.5.3 Taking measurements using the PUA 60 laser
visibility glasses
NOTE
The laser visibility glasses have no protective function
and thus do not protect the eyes from laser beams. As
these glasses limit color vision they must not be worn by
persons driving on a public road and must not be used
to look directly into the sun.
The PUA 60 laser visibility glasses improve laser beam
visibility considerably.
6.5.4 Measuring using the PDA 72 measuring
extension
NOTE
The measuring extension is made from aluminium and is
equipped with a non-conductive synthetic rubber grip.
When the PDA 72 measuring extension (optional ac-
cessory) is screwed onto the underside of the tool it is
detected automatically by the tool and indicated in the
display. The tool detects the extended measuring ref-
erence. The PDA 72 measuring extension can also be
fitted to the underside of the tool (battery compartment)
but is not detected automatically when in this position.
Depending on how the tool is to be used, the reference
can also be adjusted manually (see section "Measuring
reference").
7.1.1 Measuring modes
Distances can be measured using two different meas-
uring modes, i.e. single measurement and continuous
measurement. Continuous measurement is used for set-
ting out given distances or lengths and can also be used
where access is difficult, e.g. at corners, edges and in
niches, etc.
7.1.1.1 Single measurements
If the tool is switched off it can be switched on by pressing
the "On/off" button or the "Measure" button. If the tool is
switched on by pressing the "Measure" button the laser
is also activated, so step one described below can be
omitted.