Measuring and testing – Volume or rate of flow – By measuring vibrations or acoustic energy
Patent
1994-09-14
1997-07-01
Chilcot, Richard
Measuring and testing
Volume or rate of flow
By measuring vibrations or acoustic energy
G01F 166
Patent
active
056440901
ABSTRACT:
A gas meter includes a measuring tube through which gas to be supplied is fed. The tube includes two ultrasonic transducers between which ultrasonic signals are transmitted so that gas flow is measured in dependence upon the difference between the times of flight of ultrasonic signals transmitted therebetween in opposite directions. The gas flow is determined from the difference between the times of flight. A digital display is operative to indicate the volume of gas used, and an electrical power supply is used for driving the apparatus. The times of flight are measured by an electronic clock. Finally, a data interface facilitates the feeding of data to or from the meter.
REFERENCES:
patent: 3575050 (1971-04-01), Lynnworth
patent: 3874233 (1975-04-01), Sanctuary et al.
patent: 4103551 (1978-08-01), Lynnworth
patent: 4483202 (1984-11-01), Ogura et al.
A. von Jena et al., "Ultrasound gas-flow meter for household application," Sensors and Actuators, Jun.-Aug. 1993, pp. 135-140.
Artis Jewel V.
Chilcot Richard
Siemens Measurements Limited
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