TECHNICAL REFERENCE MANUAL
5.3 Prevention of erroneous measurements
5.3.1 Rough surfaces
On a rough surface (e.g. coarse plaster), measure against the center of the illuminated area. To avoid measuring to the bottom of gaps in
the surface use a target plate (see accessories on www.dimetix.com) or board.
5.3.2 Transparent surfaces
To avoid measuring errors, do not measure against transparent surfaces such as colorless liquids (such as water) or (dust-free) glass. In case
of unfamiliar materials and liquids, always carry out a trial measurement.
Erroneous measurements can occur when aiming through glass panes
or if there are several objects in the line of sight.
5.3.3 Wet, smooth, or high-gloss surfaces
1 Aiming at an “acute“ angle deflects the laser beam. The DLS-C(H)/FLS-C(H) may receive a signal that is
too weak (error message 255) or it may measure the distance targeted by the deflected laser beam.
2 If aiming at a right angle, the DLS-C(H)/FLS-C(H) may receive a signal that is too strong (error message 256).
5.3.4 Inclined, round surfaces
Measurement is possible as long as there is enough target surface area for the laser spot. On irregular and round surfaces the arithmetic
average of the illuminated surfaces will be measured.
5.3.5 Multiple reflections
Erroneous measurements may occur if the laser beam is reflected by other objects than the target. Avoid any reflective object along the
measurement path.
5.3.6 Influence of sun light
Aiming directly to the sun or the sun is exactly behind the target could make it impossible to measure distances.
Distance Laser Sensor Page 22/53
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