The KT capacitive touch sensors from ifm electronic can be used, for example, as start and stop buttons on machines, or as an enable switch for opening and closing gates. Compared to mechanical switches, the sensors operate without wear. The dynamic touch sensors can detect an approaching human hand, and suppress interference such as water, layers of ice or foreign bodies, to a large extent – while even a gloved hand will still trigger them. Using the latching operating principle, it is possible to switch the sensor on by touching briefly and to switch it off again by touching briefly.
The housing is resistant to oils and it is also impact and scratch resistant. The sensor offers the protection rating IP69K and a wide temperature range from -40 to 85°C. LEDs for optical feedback signal that the sensor has been activated. The green LEDs can be controlled separately and, for example, be used to indicate the status of plant and machinery. Installation alignment of the sensor is not necessary since the clip showing the symbol for the sensing face is snapped in as the last step. Wiring is done using 3 or 4-wire technology.
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