A method and a sensor device for measuring the distance...

B - Operations – Transporting – 02 – C

Patent

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B02C 7/14 (2006.01) D21D 1/30 (2006.01) G01B 7/14 (2006.01)

Patent

CA 2519892

A sensor device for measuring distance between a stator and a rotor in a machine is of the magnetic type and is intended to be mounted in the stator in order to interact with an opposing surface on the rotor. A sensor body (10) can be moved axially in a housing (11) mounted in the stator by means of an operating mechanism (13) and has a stop (16) at a predetermined distance (e) from its end surface designed to interact with a corresponding stop (17) inside the housing. This distance (e) exceeds the distance (d) between the stop (17) in the hosing and the end of the sensor body (10) by a predetermined distance (c) when the sensor body is in its normal measuring position. These stops (16, 17) make possible a particularly accurate calibration of the sensor device.

Cette invention concerne un dispositif de détection destiné à mesurer la distance entre le stator et le rotor d'une machine de type magnétique, qui se monte dans le stator et interagit avec une surface opposée du rotor. Un élément détecteur (10), qui peut coulisser axialement dans un boîtier (11) monté dans le stator au moyen d'un mécanisme (13), comporte une butée (16) située à une distance prédéterminée (2) de sa surface d'extrémité et qui interagit avec une butée correspondante (17) à l'intérieur du boîtier. La distance (e) dépasse la distance (d) entre la butée (17) dans le boîtier et l'extrémité de l'élément détecteur (10) d'une valeur prédéterminée (c) lorsque l'élément détecteur est en position de mesure normale. Ces butées (16, 17) permettent un étalonnage extrêmement précis du dispositif détecteur.

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