Terence J Iadanza

US Patent:

58311769, Nov 3, 1998

Filed:

Mar 24, 1995

Appl. No.:

8/410485

Inventors:

Charles S. Karr - Issaquah WA
Terence J. Iadanza - Seattle WA
Leslie D. Music - Federal Way WA

Assignee:

The Boeing Company - Seattle WA

International Classification:

G01F 1500

US Classification:

7386177

Abstract:

A fluid flow measurement assembly is shown and described. In a preferred embodiment, a flow conditioning section comprised of straightening vanes and a diffuser, as well as temperature probes, pressure transducers, and a metering assembly, are all provided in an integral housing. The assembly is provided with different sized flanges on an inlet orifice and an exit orifice, such that the assembly may be installed in a fluid line in only one direction, thereby preventing incorrect installation. The flow conditioning section is comprised of a diffuser and straightening vanes, and serves to ensure that fluid flowing through the measurement assembly is uniformly scrambled and then normalized, such that the metering assembly will be substantially insensitive to upstream flow disturbances and will provide accurate and repeatable fluid flow measurements. The metering assembly is comprised of two counter-rotating turbines, a pickoff device or pulse detector being provided for each turbine. The assembly is provided with a single connector that is coupled to leads of the temperature probes, pressure transducers and pulse detectors, such that these components may be coupled to a processor external to the housing, simply and accurately.