Flow metering of high temperature gases

Details Flow metering of high temperature gases Flow metering of high temperature gases

1988-10-11

1990-08-21

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Proportional

7320422, G01F 168, G01F 500

Patent

active

049495780

ABSTRACT:
A flow meter capable of performing within gas flows exhibiting temperatures above about 600.degree. F. includes a thermally-stable housing formed of fire brick or the like through which a passageway is formed. A resistance temperature sensor (RTD), serving as a reference is positioned at the entrance region of the passageway, while a heater coil and RTD temperature sensor are located toward the exit opening of the passage. The latter components are located within a heat confining region of the passageway which is so configured with respect to its length and diametric extent as to define a heat confining chamber which substantially reduces radiant heat loss, conductive heat loss, and convective heat loss not occasioned by gas flow to achieve heretofore unavailable performance.

REFERENCES:
patent: 2813237 (1957-11-01), Fluegel et al.
patent: 4399697 (1983-08-01), Kohama et al.

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