Capacitive sensors - applications

Capacitive transducers are used in highly dynamic fields. Their high resolution and resistance to temperatures of up to 200 °C predestine capacitive transducers for dynamic measurements in extreme environments.

Capacitive displacement sensors are used for distance measurement in low-temperature as a reference system for other distance sensors. Other typical applications are tolerance testing in mass production, vibration measurement, strain measurement, thickness measurement and thickness control of thin metal foils, thickness measurement of plastic foils during production, bevelling and bending of wafers in semiconductor production and many more.

Measurement brake disc

Brake discs of vehicles are exposed to very high short-term loads. The mechanical abrasion and the extreme temperature development on the brake disc have considerable effect on the microstructure of the brake disc. The material used must be able to withstand these loads for as long as possible without changing its microstructure. Fine cracks lead to a break when the load is reapplied and endanger the vehicle.

Capacitive sensors are used in the measurement of brake disc deformation. Due to the high temperature development, very few sensors are suitable for operating close to the measurement object. Capacitive transducers detect changes in the nanometer range and measure the wear on the brake disc.

Capacitive transducers – dynamic measurement at turbines or engines

In turbines the centrifugal forces exerted on the turbine blades result in the expansion of the blades. For the design and construction of turbine blades it is essential that no imbalances arise that unbalance the system.

Capacitive transducers detect changes in the nanometer range and provide crucial data for the FEM analysis.


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