Eddy current sensors WST - non-contact and highly dynamic displacement measuring systems
2020-09-24 09:56:22, WayCon Positionsmesstechnik GmbHEddy current sensors are non-contact displacement measuring systems that generate eddy currents in electrically conductive materials by means of a high-frequency magnetic field. The sensor detects the thereby triggered change of the AC resistance of the oscillating circuit, which changes depending on the distance to the target.
The eddy current principle enables measurement on all electrically conductive materials such as metals. Ferromagnetic materials are particularly suitable. Another advantage of this measuring principle is that the measurement is not affected by environmental influences such as water, oil or dust. The eddy current sensors are also wear-free and require no special maintenance.
With the displacement encoder system consisting of the WST sensor head and the WAT electronics, standard measuring ranges of up to 4 mm can be recorded effortlessly. A linearity of up to 1 % and a resolution of maximum 0.4 µm are achieved. Thanks to special temperature compensation, a high operating temperature range of -20 to +125 °C and a temperature stability of 0.02 %/K are also made possible.
As the measuring principle allows non-destructive material characterization or material testing, eddy current sensors are particularly suitable for testing and manufacturing technology.
For technical information, see Data sheet WST.
You can find more sensors of this measuring principle on the product page Eddy current sensors.
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