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Noncontacting valve-position indicatorPosition of sealed valve or other movable part is indicated without penetrating housing. Flux from magnets connected to stem of hydraulic valve penetrates pressure wall and is sensed by Hall-effect transducer outside wall. When valve closes, moving stem and magnets, voltage from transducer decreases; thus, stem position is indicated without physical contact.
Document ID
19780000412
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Crovella, E. A. (Carleton Controls Corp.)
Cummins, R. D. (Carleton Controls Corp.)
Wada, J. M. (Rockwell Intern. Corp.)
Date Acquired
August 9, 2013
Publication Date
January 1, 1979
Publication Information
Publication: NASA Tech Briefs
Volume: 3
Issue: 3
ISSN: 0145-319X
Subject Category
Machinery
Report/Patent Number
MSC-16048
Report Number: MSC-16048
ISSN: 0145-319X
Accession Number
78B10412
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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