25
Allvis – Manual (EN 2021-05-25)
4.6 Position of the Vehicle
The positioning of the vehicle is in certain cases decisive for
the measurement accuracy with the ALLVIS measurement
system.
Above all it is the vehicle’s lateral inclination, which is
important, since this influences the measurement result
when measuring the height of the vehicle.
The table below reports the influence on the measurement
accuracy in millimeters and degrees for a specific lateral
inclination of the vehicle.
This illustration shows that the vehicle is 1200 mm wide, 600
mm on each side of the center line, and standing at an
inclination of 5°. If one goes out to 600 mm on the scale and
down to 5 on the graduated scale this shows that the height
difference is 52 mm from the center line + or - depending on
which side is measured. The millimeter scale shows the height
difference to be 100 mm from the center, depending on how
many degrees the vehicle is inclined. The example shows how
important it is for the vehicle to be level in order to obtain a
correct measurement result. The table below shows how much
must be added on or taken away to obtain a correct
measurement value.
+ Center line of vehicle -
The degrees show the inclination of the vehicle.
Always try to have the vehicle as level as possible!
mm 900 800 700 600 500 400 300 200 100 C 100 200 300 400 500 600 700 800 900
0,5°
8
7
6
5
4
3,5 3
2
1
0
-1
-2
-3
-3,5 -4
-5
-6
-7
-8
1°
16
14
12
10
9
7
5
3
2
0
-2
-3
-5
-7
-9
-10 -12 -14 -16
2°
31
27
24
21
17
14
10
7
3
0
-3
-7
-10 -14 -17 -21 -24 -27 -31
3°
46
41
36
31
26
21
16
10
5
0
-5
-10 -16 -21 -26 -31 -36 -41 -46
The vehicle height difference in mm from the center of the line.
