RayTek RAYCMLTJM, Руководство по эксплуатации

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Basics
CM Rev. B 06/2011 16
4.2 Distance and Spot Size
The desired spot size on the target will determine the maximum
measurement distance and the necessary focus length of the optical module.
To avoid erroneous readings the target spot size must contain the entire field
of view of the sensor. Consequently, the sensor must be positioned so the
field of view is the same as or smaller than the desired target size.
Figure 2: Proper Sensor Placement
4.3 Ambient Temperature
The sensing head should work under ambient operating range in accordance
to section 3.1
Parameters , page 11.
4.4 Atmospheric Quality
In order to prevent damage to the lens and erroneous readings, the lens
should always be protected from dust, smoke, fumes, and other conta-
minants. For this purpose an air purge collar is available. You should only use
oil free, clean “instrument“ air.
Target greater than spot size
Target equal to spot size
Target smaller than spot size
Best Good Incorrect
Background