Patent ID: 9506994
Filing Date: 2016-11-29
CPC Classification: G01D,G01R

Claim Text:
1. A sensor apparatus which comprises: a first magnetic transducer which in use is positioned on a first side of a barrier, the first transducer being configured to generate a first purely magnetic field; and a second magnetic transducer which in use is positioned on a second side of the barrier opposite the first side, the second transducer comprising a magnetic or electrical property which is dependent upon a sensible condition on the second side of the barrier and a sensor coil which is configured to generate a second purely magnetic field; wherein in operation of the sensor apparatus the first transducer generates the first magnetic field, which induces the sensor coil to generate the second magnetic field, the second magnetic field being dependent upon the magnetic or electrical property of the second transducer; and wherein the first transducer detects the second magnetic field and in response thereto generates a signal which is representative of the sensible condition on the second side of the barrier.