Proximity Switches
-Through Beam
Transmitter
and receiver of through-beam sensors are separate. This means that the emitted
light has to travel the distance between transmitter and receiver only once.
Therefore they are called through-beam sensors. These types can reach very
large scanning ranges.
For the use of through-beam sensors, their sensing range is essential. In case
of very critical ambience conditions, as in strong formations of dust or steam,
it is important to pay attention that the sensors cannot be run at their
sensing range limits. Attenuation may result, which reduces the sensing range.
The sensing range listed in the data sheet should not be exceeded, in order to
guarantee functionality even in bad operating conditions. If corner mirrors are
used, the total distance to be monitored should be within the indicated sensing
range.