Noninvasive valve monitor using constant magnetic and/or DC elec

Details Noninvasive valve monitor using constant magnetic and/or DC elec Noninvasive valve monitor using constant magnetic and/or DC elec

1991-06-20

1993-08-17

Chambers, A. Michael

Fluid handling

With indicator, register, recorder, alarm or inspection means

Position or extent of motion indicator

3242072, F16K 3700, G01B 714

Patent

active

052360113

ABSTRACT:
One or more sources of steady magnetic field are carefully located on the outside of a valve body. The constant magnetic field is transmitted into the valve body and valve internals. A magnetic field detector carefully located on the outside of the valve body detects the intensity of the magnetic field at its location. As the position of a valve internal part is changed, there is an alteration in the magnetic field in the valve, and a consequent change in the detected magnetic field. Changes in the detected signal provide an indication of the position and motion of the valve internals.

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(Liberty Attachment 1) Notebook entries from Liberty Technologies, pp. 97-99, 107-109.
(Liberty Attachment 2) Patent application without claims, "System for Determining Position of an Internal, Movable Conductive Element."
(Liberty Attachment 3) U.S. patent application with claims, "A Non-Invasive System and Method for Inspection of Valves," Liberty File: MCEL-1.

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