Measuring and testing – Liquid level or depth gauge – Hydrostatic pressure type
Patent
1984-10-26
1985-10-29
Ruehl, Charles A.
Measuring and testing
Liquid level or depth gauge
Hydrostatic pressure type
73198, 7386112, G01F 2314, G01F 900
Patent
active
045494347
ABSTRACT:
A pressure level sensor for mounting a pressure transducer in a fluid flow channel. The sensor is characterized by an elongated wedge-shaped configuration wherein the width of the convex front wall portion is less than that of the rear wall portion which in turn is less than the length of the sensor. The side wall portions of the sensor each have concave surfaces, the radius of curvature of which is a function of the length of the sensor. At least one side wall portion contains a horizontal pressure port for communication with the pressure transducer. The front, rear, and side wall portions are tapered and curved vertically inwardly and terminate at a top wall portion. When the sensor is arranged on the bottom of the channel with the front wall portion facing upstream relative to the fluid flow, the velocity vector of the fluid flow is perpendicular to the direction of extension of the opening, thereby to minimize flow velocity effects on the pressure transducer.
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patent: 4459858 (1984-07-01), Marsh
Marsh-McBirney, Inc.
Ruehl Charles A.
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