Figure 2: Alignment
7.2 Check the application conditions
WTS26 are photoelectric proximity sensors with background suppression. Depending
on the remission factor of the object to be detected, and perhaps the background
behind it, a minimum distance (y) between the set sensing range (x) and the back‐
ground is to be maintained.
Check the application conditions: Adjust the sensing range and distance to the object
or background as well as the remission capability of the object according to the corre‐
sponding diagram [see table 13] (x = sensing range, y = minimum distance between set
sensing range and background (white 90%)). Remission factor: 6% = black 1, 18% =
gray 2, 90% = white 3 (referring to standard white as per DIN5033). We recommend
that the adjustment be performed with an object of low remission.
The minimum distance (= y) for the background suppression can be determined from
the diagram [table 13 1] as follows:
Example: x = 500 mm, y = 25 mm. That is, the background (white, 90%) is suppressed
at a distance of > 25mm of the configured sensing range.
OPERATING INSTRUCTIONS
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O P E R A T I N G I N S T R U C T I O N S | WTS26 8020355.1GI9/2022-07-13 | SICK
Subject to change without notice
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