Pressure transducer based fluid velocity sensor

Details Pressure transducer based fluid velocity sensor Pressure transducer based fluid velocity sensor

2007-08-07

2007-08-07

Bui, Bryan (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Mechanical measurement system

C340S856400

Reexamination Certificate

active

11304314

ABSTRACT:
The invention consists of a pressure transducer based air velocity sensor that has been optimized for use in metal ducts. The fluid flow velocity is determined by measuring the propagation delay of a direct path pressure wave signal transmitted through the fluid as a function of a frequency difference rather than as a phase delay measurement. This system electronically removes multi-path signals from the measured signal, thereby obviating the requirement for installation calibration.

REFERENCES:
patent: 4215425 (1980-07-01), Waggener
patent: 4361050 (1982-11-01), Coussot et al.
patent: 5388583 (1995-02-01), Ragauskas et al.
patent: 2002/0129662 (2002-09-01), Gysling et al.
patent: 2002/0180613 (2002-12-01), Shi et al.

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