Measuring and testing – Volume or rate of flow – By measuring vibrations or acoustic energy
Patent
1989-06-13
1991-03-26
Ruehl, Charles A.
Measuring and testing
Volume or rate of flow
By measuring vibrations or acoustic energy
7386128, G01F 166
Patent
active
050019368
ABSTRACT:
The transducers in a transit time clamp-on flowmeter are positioned relative to one another by abutting against pin stops located in selected openings of one or more rows of openings extending longitudinally along the pipe axis. A block of sound-absorbing material is fixed to the conduit surface between the spaced transducers and tends to absorb sound energy flowing in the pipe wall between the transducers and substantially improves the signal-to-noise ratio of the system.
REFERENCES:
patent: 4425803 (1984-01-01), Baumodel
patent: 4454767 (1984-06-01), Shinkai et al.
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