Electricity: measuring and testing – Magnetic – Displacement
Patent
1988-08-01
1990-05-01
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Magnetic
Displacement
338 32R, 32420726, G01B 730
Patent
active
049221973
ABSTRACT:
A tachometer sensor adapted for measuring the rotation of a gear or spline shaft target within a high pressure environment includes an integrally formed housing having a generally tubular elongate probe defining a sealed interior cavity receiving an annular permanent magnet at the sensing end thereof, field focusing means such as a ferrous pin disposed concentrically with the permanent magnet to shape the field established thereby, at least one magnetoresistive transducer concentrically disposed with the magnet to detect distortions of the magnetic field effected by passage of the target and means in-circuit with the transducer which generates a usable output signals as a function of sensed magnet field distortion.
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Beihoff Bruce C.
Juds Mark A.
Eaton Corporation
Edmonds Warren S.
Eisenzopf Reinhard J.
Lewis J. G.
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