Sensors for sensing a plurality of parameters

Details Sensors for sensing a plurality of parameters Sensors for sensing a plurality of parameters

1977-02-28

1978-07-04

Caldwell, Sr., John W.

Communications: electrical

Digital comparator systems

73736, 336110, 336132, G08C 1906

Patent

active

040991644

ABSTRACT:
Sensors, or transducers, which utilize elongated magnetically saturable tubes with sense lines that run through the tubes for simultaneous sensing of a plurality of parameters are disclosed. One version involves a single sensing element which has a first pair of diametrically disposed magnetic poles responsive to one condition that is positioned adjacent to one end of the tube and a second pair of diametrically disposed magnets responsive to another condition that is positioned adjacent to the other end of the tube. Another version involves two elements which have temperature vs. inductance characteristics which intersect, and a pair of diametrically disposed magnets responsive to another condition positioned adjacent the two elements.

REFERENCES:
patent: 3091122 (1963-05-01), Pike et al.
patent: 3805617 (1974-04-01), Kamazuka
patent: 3848180 (1974-11-01), Jonke et al.
patent: 3950993 (1976-04-01), Sidor
patent: 3958202 (1976-05-01), Sidor
patent: 3958203 (1976-05-01), Bernin
patent: 4045787 (1977-08-01), Sidor et al.
patent: 4064497 (1977-12-01), Sidor et al.

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