Measuring and testing – Volume or rate of flow – System
Patent
1980-12-11
1983-08-23
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
System
7386177, 7386192, G01F 110, G01F 164
Patent
active
043996965
ABSTRACT:
The disclosed flow sensors involve rotor-bearing probes proportioned for entry through a hole in a pipe. By omitting flow-straightening vanes, the rotors can be relatively large. Multiple rotors distributed across the flow passage, especially one or more pairs of oppositely rotating rotors, have respective rotation sensors whose outputs are combined for averaging out the varied effects of the flow on the rotors. The rotation sensors produce trains of pulses that are converted to narrow spikes before being combined.
REFERENCES:
patent: 2859616 (1958-11-01), Fellows
patent: 2878672 (1959-03-01), Wikkenhauser
patent: 3979954 (1976-09-01), Ide et al.
patent: 4111043 (1978-09-01), Guthrie et al.
Goldstein Herbert
Wilgood Corporation
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