Schurter already offers a wide range of piezo and robust mechanical switches for harsh applications. The company has now introduced a new capacitive switch. Like piezo switches, capacitive switches possess no mechanical parts which could lead to a functional failure. The lifetime of capacitive systems exceeds that of mechanical systems many times. The actuation occurs without pressure by touching the front side - vibrations or strokes do not influence the functioning of the switch.
Capacitive switches were previously considered to be sensitive to water, dirt and EMC. The electronics of the Schurter switches in this category now incorporate an adaptive function: slow changes in the switch area - for example dirt particles and water drops are registered and taken into account. This avoids unintentional actuation or functional failure due to dirt. EMC influences due to electrical voltage, sparks and magnetic fields are also taken into consideration by the electronics.
The robust aluminium housing (IP67) is tight and insensitive to dust, water and fluids and operation is guaranteed within a temperature range of -20 to +85°C. The capacitive switch is available in two different designs:
* The CSE 16 (in an aluminium housing with M16 thread) single switch with a 15 mm build-in depth is currently the smallest size on the market and comes with an additional feature of a ring illumination in red or green. Coloured designs and lasered lettering provide a wide range of options.
* The CSE under glass is a square and point illuminated switching element for specific applications behind a nonconducting overlay material of up to 20 mm (glass, wood or tiles). Both designs are available with a momentary and latching action and, in addition, the CSE 16 comes with a defined pulse function.
The new switches are specifically designed for use in rough climates and industrial environments, as well as in all other vandalism-exposed areas.
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