Measuring and testing – Volume or rate of flow – By measuring transit time of tracer or tag
Patent
1981-07-06
1985-08-06
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
By measuring transit time of tracer or tag
G01F 168
Patent
active
045328110
ABSTRACT:
Apparatus for accurately metering liquid flow based on the injection of a brief heat pulse into the flowing stream, e.g., via a miniature thermistor, and detection of an electronic time derivative of temperature downstream with, e.g., a second microprobe thermistor. This detection triggers a subsequent heat pulse and the cycle repeats, wth pulse total corresponding to elapsed liquid throughput, and pulse frequency to flow rate.
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Manual for the Knauer Electronic Volumeter Entitled "Instructions/Knauer Electronic Volumeter", Type 68.00 for Flow-Through Volume Measurement (and Including Cover Letter of the Utopia Instrument Company Dated Mar. 24, 1980).
Abstract No. 34 from the 1979 Pittsburg Conference Entitled "Precise Measurement of Flow Rate in Liquid-Chromatography: The Electronic Volumeter".
Miller, Jr. Theodore E.
Small Hamish
Goldstein Herbert
Halldorson Burke M.
The Dow Chemical Company
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