Electricity: measuring and testing – Magnetic – Displacement
Patent
1985-06-21
1988-04-19
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Magnetic
Displacement
336 45, G01B 714, H01F 2102
Patent
active
047392606
ABSTRACT:
A proximity sensor includes an electrical circuit formed by a slot in an elongate conductive strip. The strip carries a magnet having a pole piece protruding through the strip at one end of the slot. At the other end of the slot pass laminations which magnetically couple the electrical circuit and a multi-turn coil arranged on a form attached to the strip. The coil is terminated at a pair of output leads. A ferrous object passing in the vicinity of the pole piece of the magnet modifies the flux pattern at the pole face. The resultant flux changes, being tightly coupled to the electrical strip, induce a low voltage high current emf into the strip, which forms the primary turn of a current transformer. The secondary of the current transformer is formed by the close-coupled coil, which has multiple turns, dependent upon the output voltage required at the output leads. The invention overcomes the problem of providing a proximity sensor which can operate at a high temperature since the conductive strip may be uninsulated, without consequent danger of insulation breakdown, as with prior art multi-turn arrangements.
REFERENCES:
patent: 2532100 (1950-11-01), Howell
patent: 3876927 (1975-04-01), Gee et al.
patent: 4382230 (1983-05-01), Gauthler
patent: 4444063 (1984-04-01), Snowden et al.
Eisenzopf Reinhard J.
Gaudier Dale
Schlumberger Electronics (U.K.) Limited
Snow Walter E.
LandOfFree
Proximity sensor with remotely coupled output does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Proximity sensor with remotely coupled output, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Proximity sensor with remotely coupled output will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2178116