Position Sensors
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Capacitive Sensors
Contact as well as non contact capacitive sensors work by measuring changes in an electrical property called capacitance. Capacitance describes how two conductive objects with a space between them respond to a voltage difference applied to them. High switching distance up to 30 mm even through non-metallic walls. Absolutely reliable even when interfered by ambient conditions. Absolutely reliable detection of objects such as wafers, PCBs, paper stacks or hot adhesives up to 200 °C.
Key Features
- Independent of color, gloss or surface properties
- Insensitive to dust and dirt
- Robust construction in hygienic design
- Sensors with flush installation are especially recommended for non-conductive (dielectric) media
- Detection regardless of transparency or brightness of the objects
- Large sensing distances ensure reliable box detection
Applications
- Adhesive liquid level detection
- Plastic granules detection
- Presence detection of plastic boxes
- Wafer detection in solar cell manufacturing facilities
- Granulate bulk goods detection in injection molding plants
Types of Capacitive Sensors
- Sensors in a metal housing
- Sensors in a plastic housing
- With media contact sensors