| Wenglor Sensoric is once again
living up to its reputation as a trend setter with its newly developed sensor: The WM
series. Wenglor's new reflex sensor detects printed markings of any desired colour.
Troublesome adjustment of emitter light colour for conformity with the colour of the
printed markings is now a thing of the past. Any colour combination is possible -
dark green markings on a light green background, white markings on a yellow surface, or a
white stripe between yellow and black stripes are all reliably recognized by the Wenglor
WMO3 sensor. Even the slightest variations in shades are easily detectable. A small, rectangular scanning spot (1.5 x 2.5mm), allows for high
speed, reliable detection. Due to the fact that extremely short scanning times are
possible, the sensor can be ordered with either pull- in or release delay of 10ms. When
operated in the normally open mode with release delay, light markings on a dark background
can be recognized. On the other hand, pull-in delay is suitable for the recognition of
dark markings on a light background. With a mini hysteresis of less than 2%, the sensor
detects even yellow on white - a colour combination which is extremely low in contrast
(because yellow and white return almost identical amounts of light). |
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