Air flow manifold system for providing two different mass air fl

Details Air flow manifold system for providing two different mass air fl Air flow manifold system for providing two different mass air fl

1992-07-13

1994-04-05

Raevis, Robert

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

G01F 2500

Patent

active

052994473

ABSTRACT:
An air flow manifold system for a production line calibration station. The air flow manifold system has a connector manifold connected to the production line calibration station, a vacuum source, a first manifold and a second manifold. The first and second manifolds connect the connector manifold to a vacuum source. The first and second manifolds each have a shut-off valve and a sonic nozzle controlling the mass air flow therethrough. The mass air flow through the first and second sonic nozzles are selected to have an optimal value for the calibrations to be conducted by the calibration station. An electrical controller sequentially activates the first and second valves sequentially supplying the specified mass air flow rates through the calibration station. Pressure and temperature sensors disposed upstream of the sonic nozzles permit an accurate determination of the mass air flow rates through the sonic nozzles.

REFERENCES:
patent: 2755663 (1956-07-01), Smith et al.
patent: 3026706 (1962-03-01), Halsell et al.
patent: 3226973 (1966-01-01), Evans et al.
patent: 3469442 (1969-09-01), Brueckner
patent: 4590790 (1986-05-01), Hicks et al.
patent: 4879662 (1989-11-01), Vicari et al.
patent: 5211056 (1993-05-01), Takamoto et al.

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