| 摘要 |
The present invention relates to a measuring device for measuring the humidity of materials, in particular the humidity of textiles. The measuring device according to the invention comprises an evaluation circuit EC having electrical terminals ( 8, 9 ), an oscillatory circuit ( 5 ) and a primary electrical circuit ( 1 ) contactlessly coupled to a secondary electrical circuit ( 2 ). Each of said primary and secondary circuit ( 1, 2 ) comprises a ferromagnetic element ( 3, 6 ) and a coil ( 4, 7 ) wrapped around it. Switching means ( 10 ) are provided for short-circuiting the coil in the secondary circuit ( 2 ) in response to the electrical resistance of an electric load connected the electrical terminals ( 8, 9 ) and output means ( 11 ) for outputting signals in response to the short-circuiting of the switching means ( 10 ) are also provided. A laundry drying machine comprising a measuring device is also disclosed.
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