How do rain, fog, glass and bright sunlight affect measurements?
Fog and raindrops can scatter laser light. Less light may then return from the actual object. Drops or particles in front of it may also generate returns of their own. The strength of this effect depends on the weather, instrument and measurement situation. One blanket correction for every rainy day would therefore not be meaningful.
Fog and raindrops can scatter laser light. Less light may then return from the actual object. Drops or particles in front of it may also generate returns of their own. The strength of this effect depends on the weather, instrument and measurement situation. One blanket correction for every rainy day would therefore not be meaningful.
A pane of glass also changes the light’s path. Some light may reflect off it while some passes through. Coatings and the angle of the pane play a part. The displayed number alone does not reveal which surface the instrument detected.
Bright sunlight adds background light. The instrument has to distinguish its measuring signal from this background. A clear view through the optic therefore does not guarantee a reliable distance reading. Weather resistance is a separate property: it protects the housing. It does not stop rain or fog from affecting the light path.