Electricity: measuring and testing – Magnetic – Displacement
Patent
1990-12-18
1992-06-30
Snow, Walter E.
Electricity: measuring and testing
Magnetic
Displacement
32420716, 32420725, 324225, G01B 714, G01N 2772, G01R 3300
Patent
active
051266644
ABSTRACT:
A small diameter proximity coil for use in proximity sensors to sense imbalance in rotating machinery which has a coil of less than 0.3 inch diameter is constructed of a silver/palladium alloy of 89% silver and 11% palladium. This provides for, because of the inherent balancing out of AC and DC resistance changes, temperature errors of less than 10% over a wide temperature range of operation.
REFERENCES:
patent: 4517156 (1985-05-01), Masumoto et al.
patent: 4563643 (1986-01-01), Leschek et al.
Bently Nevada Corporation
Snow Walter E.
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