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J Appl Physiol 18: 1265-1267, 1963;
8750-7587/63 $5.00
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Square-wave electromagnetic flowmeter employing commercially available recorder

Allen M. Scher 1, Julian Zepeda 1, and Otis F. Brown 1

1 Department of Physiology and Biophysics, University of Washington School of Medicine, Seattle, Washington

The availability of a stable, highly sensitive commercial recorder led us to construct a simple delay unit and square-wave driver for the purpose of measuring blood flow electromagnetically. The construction of the flowmeter heads is described briefly, and some analysis is made of possible deficiencies in flowmeter heads employing iron cores. The flow-measuring system is sensitive and linear and, when the magnet drive is turned off, the base line is within a few microvolts of true zero flow.

blood flow in intact animals; epoxyresin embedding implantation

Submitted on March 4, 1963






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