Principle of operation

The series SW 505 Capacitive Proximity Switches are designed for sensing wide range of materials. These switches give a superior performance for detection of various non-metallic objects where Inductive type switches can not function. The switch works on the principle of resonant oscillator circuit. A pair of brass / copper disc form the electrodes of a capacitor & the object acts as a dielectric media. The change in capacitance value, due to presence of object, is sensed by a precision integrated circuit. An effective output singnal is generated at a preset value of capacitance.

Construction

These are offered in tubular threaded hosing from size M12 to M80. The enclosures are made of brass, stainless steel or Engineering Plastics. Special shapes, teflon housings are provided against requirements. Standard models are provided with an integrated 2 meter long cable. Connector type versions are available with built-in male connectors.

Applications

• Liquid level
• Plastic granules & parts
• Sand / Bulk Material Level
• Food / Grain / Confectionary
• Paper & rubber
• Glass bottles / Tins in packaging