Volume flow meter that measures transit time

Details Volume flow meter that measures transit time Volume flow meter that measures transit time

1993-10-28

1994-08-09

Chilcot, Jr., Richard E.

Measuring and testing

Volume or rate of flow

By measuring transit time of tracer or tag

G01F 1708, G01F 168

Patent

active

053355555

ABSTRACT:
An aerodynamic enclosure is placed in the flow, the enclosure including an opening enabling the enclosure to be filled with the flowing fluid, and having a thermal pulse generator mounted flush with its wall, which generator is suitable for emitting modulated thermal pulses simultaneously to the outside and to the inside of the enclosure. A first thermal sensor is located in the flow and a second thermal sensor is located in the enclosure. The sensors measure propagation times or phase shifts of the thermal waves respectively in the flow and in the non-flowing fluid, thereby making it possible to deduce the value of the fluid flow rate while compensating for any variations in the temperature, pressure, and composition of the fluid. The invention is applicable to gas metering.

REFERENCES:
patent: 2776565 (1957-01-01), Hudson
patent: 4228683 (1980-10-01), Juffa et al.
patent: 4633578 (1987-01-01), Aine et al.
patent: 4644800 (1987-02-01), Kozlak
patent: 4713970 (1987-12-01), Lambert
patent: 5243858 (1993-09-01), Erskine et al.

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