導電性溶液を用いた二液マノメータ

概要

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This manometer is made of a glass U-tube filled with two immiscible conductive solutions, with one electrode set on each side of the boundary surface between the two solutions. The solutions are prepared by adding several drops of dilute sulfuric acid each to methyl-ethyl-ketone and distilled water. When a pressure difference is applied to the manometer, the boundary position is moved, and the resistance between the two electrodes varies with the move. An electrical output signal is easily obtained from the variation. This manometer is suitable for use with a pitot tube anemometer, and its advantages over an ordinary U-tube manometer are ease of use, sensitivity to pressure differences, and applicability to continuous recording. This report mainly describes the static and dynamic behaviors of the monometer, which were obtained theoretically, based on physical properties of the two solutions measured experimentally.
1994-08-25