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Two precise sensing models are also now available to deliver the sharpest sensing distance cut-off and smallest switching hysteresis on the market for background suppression sensors. The first model is available with a visible red emitter, and senses black and white color extremes within an extremely tight sensing window. A black test object is sensed up to 20 mm from the sensor, a white test object is sensed up to 21 mm away and no targets are detected at or beyond 22 mm. In contrast, a standard version ML4.2 sensor enables background suppression at 25 mm from the sensor. A second model senses black to 40 mm, white to 43 mm and no objects at or beyond 43 mm.

A new ML4.2 series retroreflective sensing model with no sensing deadband is used with a corner-cube reflector and is polarized so that shiny objects will not be erroneously seen as the reflector. An innovative single optical axis design eliminates sensing deadband. A second model also includes an output that monitors signal strength.

Lastly, new ML4.2 series thru-beam sensors deliver maximum signal strength in situations where retroreflective and background suppression models do not have sufficient optical power. They feature an optical alignment aid to indicate marginal signal strength, a status LED to indicate if small objects are not detected at high speeds, and quadruple the speed of previous generation thru-beam sensors. They are ideally suited for applications with sensing distances up to at least 8 meters, and in dirtier environments.

Call Marshall Wolf Automation 800-325-9653 for all of your sensor needs from safety laser scanners to retroflective photoelectric sensors.