Subminiature hot-wire sensor construction
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Authors
Ligrani, P. M.
Subjects
Subminiature hot-wire sensors
small-scale turbulence
small-scale turbulence
Advisors
Date of Issue
1984-11
Date
1984-11
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
The detailed procedure for constructing subminiature hot-wire sensors is given. The wire used is 0.625 micrometers diameter, 90 per cent platinum/10 per cent rhodium, plated with 30-40 micrometers diameter of silver. For construction, the plated wire is first bent into the appropriate shape, and then soldered onto stainless steel prongs. Portions of the silver are then etched, removing it entirely from a 200 mm-400 mm length of platinum/rhodium wire. Small portions of copper plating are then added to give the disired platinum/rhodium wire sensing length, and to insure that good mechanical and electrical connections exist to the sensor. With this procedure, subminiature hot wire sensors have been constructed which operatewith minimal drift, and are mechanically robust for long periods of time. The sensors have been demonstrated to be a useful research tool for turbulence research because they provide a more accurate means to measure energy levels of small-scale turbulent motions than is possible with other measurement devices
Type
Technical Report
Description
Series/Report No
Department
Identifiers
NPS Report Number
NPS69-84-010
Sponsors
supported by the Science and Engineering
Research Council of Great Britain and by the Office of Naval Research
(Grant N0001 4-84-G-01 1 7) , and was carried out in the Department of Aeronautics
of the Imperial College of Science and Technology, University of London
Funder
Format
Citation
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.