optris CSmicro 2W2M Series, Руководство оператора

Страница: 15 / 45

Optical Charts
The following optical charts show the diameter of the measuring spot in dependence on the distance
between measuring object and sensing head. The spot size refers to 90 % of the radiation energy.
The distance is always measured from the front edge of the sensor housing/ CF-lens holder/ air purge.
The size of the measuring object and the optical resolution of the infrared thermometer determine the maximum
distance between sensing head and measuring object.
In order to prevent measuring errors the object should fill out the field of view of the optics completely.
Consequently, the spot should at all times have at least the
same size like the object or should be smaller than
that.
D = Distance from front of the sensing head to the object
S = Spot size
The D:S ratio is valid for the focus point.
LT15/ 2WLT15/ 2WLT15H/ 2WhsLT D:S = 15:1
optris CSmicro – E2011-08-B
13