Air-flow capture and control device for flow measurement

Details Air-flow capture and control device for flow measurement Air-flow capture and control device for flow measurement

1979-06-04

1980-11-04

Woodiel, Donald O.

Measuring and testing

Volume or rate of flow

Using differential pressure

G01F 146

Patent

active

042312531

ABSTRACT:
Four curtains are drawn or released together to set the measuring aperture of an air-flow measuring box at the desired area and the linear velocity of flow through the aperture is measured by a single-probe velometer normally held with the probe tip essentially at the center of the aperture, a perimeter sealing strip blocks unmeasured air flow around the back of the curtains. A box-like hood guides the air flow from a ceiling outlet under investigation to the curtained aperture and is provided with diagonal vanes to keep the measurement from being falsified by cyclonic air movement. The box-like hood folds up for storage or transportation.

REFERENCES:
patent: 2342290 (1944-02-01), Miller
patent: 3733900 (1973-05-01), De Baun
patent: 3937082 (1976-02-01), Schilling
patent: 4030358 (1977-06-01), Noll
patent: 4036054 (1977-07-01), Goulet

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