Transducer for distance measurement

Details Transducer for distance measurement Transducer for distance measurement

G - Physics

01

B

G01B 7/14 (2006.01) B02C 7/14 (2006.01) D21D 1/00 (2006.01) D21D 1/30 (2006.01)

Patent

CA 2452843

A transducer (10) for distance measurement, especially between a stator and a rotor in a refiner for paper pulp production, in which the transducer is of the magnetic type and has a tubular casing (17), the one end of which forms a measuring head (14), in which a measuring pole (15) is fitted in a holder (16) which is mounted in the end of the casing (17) and seals this. The holder (16), with a first portion (22) of its axial length, reaches beyond the end of the casing. This first portion (22) and the measuring pole (15) are intended to be able to be worn away to a smaller axial length during use of the transducer, whilst the length of the casing is maintained.

L'invention concerne un transducteur (10) permettant de mesurer une distance, notamment une distance entre un stator et un rotor dans un raffineur destiné à la production de pâte à papier et dans lequel le transducteur est de type magnétique et comprend un boîtier tubulaire (17) dont l'extrémité forme une tête de mesure (14), dans laquelle un pôle de mesure (15) est placé dans un support (16) monté dans l'extrémité du boîtier (17) et scellant celui-ci. Le support (16), par l'intermédiaire d'une première partie (22) de sa longueur axiale, s'étend au-delà de l'extrémité du boîtier. Cette première partie (22) et le pôle de mesure (15) sont conçus pour pourvoir être usés jusqu'à une longueur axiale plus courte pendant l'utilisation du transducteur, alors que la longueur du boîtier est conservée.

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