Hilti PMC 36 Manual De Instrucciones página 25

7.2 Examples of applications
7.2.1 Vertical alignment of pipes 3
7.2.2 Marking out the position of light fittings 4
7.2.3 Setting out drywall track for a partition
en
wall 5
7.2.4 Setting out a raised floor 6
7.3 Checking
7.3.1 Checking the vertical (plumb point) 7
1. Make a mark on the floor (a cross) in a high
room (e.g. in a stairwell or hallway with a height
of 5–10 m).
2. Place the tool on a smooth, level (horizontal)
surface.
3. Switch the tool on.
4. Position the tool with the lower beam on the
center of the cross.
5. Mark the position of the vertical beam on the
ceiling. Attach a piece of paper to the ceiling
before making the mark.
6. Pivot the tool through 90°.
NOTE The lower plumb beam must remain on
the center of the cross.
7. Mark the position of the vertical beam on the
ceiling.
8. Repeat the procedure after pivoting the tool
through 180° and 270°.
NOTE The resulting 4 marks form a circle in
which the intersection of the diagonals d1 (1 –
3) and d2 (2 – 4) marks the exact center of the
plumb point.
7.3.1.1 Calculation of accuracy
10
R =
RH [m]
30
R =
RH [ft]
The result (R) provided by this formula (RH = room
height) refers to the tool's accuracy "in mm at 10 m"
(formula (1)). This result (R) should be within the
specification for the tool (3 mm at 10 m).
20
Printed: 07.07.2013 | Doc-Nr: PUB / 5071411 / 000 / 00
(d1 + d2) [mm]
x
4
(d1 + d2) [inch]
x
4
7.3.2 Checking the laser line point of
intersection for height deviation 8
1. Place the tool on a smooth, level surface approx.
20 cm from the wall (A) with the laser beam
directed toward the wall (A).
2. Mark the point of intersection of the laser lines
on the wall (A) with a cross.
3. Pivot the tool through 180° and mark the point
of intersection of the laser lines on the opposite
wall (B) with a cross.
4. Place the tool on an even, level surface approx.
20 cm from the wall (B) with the laser beam
directed toward the wall (B).
5. Mark the point of intersection of the laser lines
on the wall (B) with a cross.
6. Pivot the tool through 180° and mark the point
of intersection of the laser lines on the opposite
wall (A) with a cross.
7.3.2.1 Calculation of accuracy
1. Measure the distances d1 between 1 and 4 and
d2 between 2 and 3.
2. Mark the mid points of d1 and d2.
If the reference points 1 and 3 are located on
different sides of the mid point, then subtract d2
from d1.
If the reference points 1 and 3 are located on the
same side of the mid point, then add d1 and d2
together.
3. Divide the result by twice the length of the room
(room length x 2).
The maximum permissible error is 3 mm at 10
m.
7.3.3 Checking the perpendicular beams for
height deviation 8
Repeat the procedure and calculate the accuracy of
each of the two perpendicular beams as described at
7.3.2 and 7.3.2.1.
(1)
7.3.4 Checking the angle between the point
(2)
of intersection of the laser lines and the
perpendicular beams 9 10 11 12 13 14
NOTE
In the following procedure, the terms "left" and "right"
refer to the following perspective: tool seen from