DocumentCode
1460939
Title
Some aspects of process control instrumentation
Author
Halsall, J.R.
Volume
17
Issue
10
fYear
1957
fDate
10/1/1957 12:00:00 AM
Firstpage
551
Lastpage
562
Abstract
This paper discusses some of the instrumentation aspects of process control. It considers the electrical methods of measuring temperature and includes a description of the low-level d.c. amplifiers used in connection with thermo-couple measurements based on the contact modulator, galvanometer-photocell and galvanometer-oscillator methods. The application of vane controlled r.f. oscillators to direct-current telemetering systems and electrical force balance measurements are also described and discussed.
Keywords
instrumentation; measurement by electrical methods; thermal variables measurement;
fLanguage
English
Journal_Title
Radio Engineers, Journal of the British Institution of
Publisher
iet
Type
jour
DOI
10.1049/jbire.1957.0055
Filename
5259340
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