Multidirectional turbulence probe development : Phase I - unidirectional turbulence sensor development /

Multidirectional turbulence probe development : Phase I - unidirectional turbulence sensor development /

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Bibliographic Details
Corporate author / creator:	Battelle Memorial Institute. Columbus Laboratories, corporate author.
Imprint:	[Washington, D.C.] : U.S. Environmental Protection Agency, October 1971. Washington, D.C. : For sale by the Superintendent of Documents, U.S. Government Printing Office [distributor], October 1971.
Description:	vi, 61 pages : illustrations, charts, plans ; 28 cm.
Language:	English
Series:	Water pollution control research series Water pollution control research series.
Subject:	Hydraulic engineering -- Instruments. Water -- Pollution -- Research. Hydraulic engineering -- Instruments. Water -- Pollution -- Research.
Format:	U.S. Federal Government Document Print Book
URL for this record:	http://pi.lib.uchicago.edu/1001/cat/bib/9959774

Hidden Bibliographic Details
Other authors / contributors:	Atterbury, Thomas J., co-author. Sorenson, James E., co-author. Groom, Jack J., co-author. United States. Environmental Protection Agency, sponsoring body.
Notes:	"Project #16050 DOW Contract #14-12-827 October, 1971"--Title page. "This report was prepared by Thomas J. Atterbury, Mr. James E. Sorenson, Mr. Jack J. Groom."--Page 33. Publisher information from cover. Publisher location from U.S. EPA About EPA, Mailing addresses and phone numbers webpage. Sponsored by the Environmental Protection Agency 14-12-827 16050 DOW
Summary:	Development of a unidirectional-turbulence probe was undertaken to investigate the feasibility of a small-diameter strain-gaged diaphragm-type pressure transducer and a self-adjusting depth compensation air reservoir for use in the follow-on development of a small (1/2-inch diameter) multidirectional-turbulence probe. A unidirectional probe was developed which is capable of monitoring water velocities over a range of 0.5 to 5 ft/sec in turbulence frequencies of 0 to over 100 Hertz and which will automatically operate in water up to 10-feet deep. Sealing inadequacies in both the air reservoir membrane and the pressure diaphragm permit moisture entry into the air volume covering the strain gages. This has given rise to balance drift and circuitry ground problems that have resulted in the placing of limitations on the water exposure and turbulence monitoring times for the unidirectional probe. These problems also suggested that the concepts cannot be immediately incorporated into a multidirectional probe design.
Govt.docs classification:	EP 1.16:16050 DOW 10/71

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Call Number:	TC177 .B374 1971
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