Air pressure measurement element and system incorporating same

Details Air pressure measurement element and system incorporating same Air pressure measurement element and system incorporating same

1986-08-14

1988-09-06

Orsino, Jr., Joseph A.

Measuring and testing

Volume or rate of flow

Using differential pressure

73147, G01F 146, G01P 5165

Patent

active

047683864

ABSTRACT:
A unitary element for use in measuring the total and static pressure of a gas flowing through a duct is disclosed in a preferred embodiment. The element is elongated and hollow, having a continuous, impermeable wall dividing the interior into total and static pressure chambers. In cross section, the element is of aerodynamic or airfoil shape, having a curved forward edge and converging toward the trailing edge adjacent which the outer surfaces are parallel for a short distance. Spaced openings along the forward edge and the upper and lower portions of the rearwardly converging wall portions communicate with the total and static pressure chambers, respectively. Separate manifolds communicate with the total and static pressure chambers of a plurality of such members arranged across an air flow duct to obtain average pressure readings across the cross section of the duct. Configuration of the measuring element and the position of the static pressure openings highly influence accuracy of the signals and permit velocity pressure readings which are amplified, yet linear over a wide range, with respect to actual velocity pressure within the duct.

REFERENCES:
patent: 2179500 (1939-11-01), Diehl
patent: 2590521 (1952-03-01), Dyche, Jr.
patent: 3673866 (1972-07-01), Alperovich et al.
patent: 3751982 (1973-08-01), Lambert
patent: 3791207 (1974-02-01), Jackson, Jr. et al.
patent: 4444060 (1984-04-01), Yamamoto
patent: 4559835 (1985-12-01), DeBaun
patent: 4602514 (1986-07-01), Kurrle et al.

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