Radiant energy – Radiation tracer methods – Radioactive tracer methods
Patent
1976-10-04
1978-08-15
Willis, Davis L.
Radiant energy
Radiation tracer methods
Radioactive tracer methods
250356, G01T 1161
Patent
active
041075250
ABSTRACT:
A passive flowmeter device is described comprising a conduit for conducting fluid flow therethrough, means located at or near one end of the conduit for introducing fluid flow into the conduit, means located at or near the other end of the conduit for removing fluid flow therefrom and means for detecting the presence in the fluid of quantities of a specific tracer substance, said detecting means being disposed within the conduit intermediate the ends thereof. In one form of the device means are provided in communication with the conduit for introducing therein a preselected tracer substance. The device operates by enabling a comparison between the rate of diffusion of the tracer substance in the given fluid with the rate of flow of the fluid as evidenced by the density gradient of quantities of the tracer substance transported by the fluid.
REFERENCES:
patent: 3261976 (1966-07-01), Hull
patent: 3842670 (1974-10-01), Brain
patent: 3889120 (1975-06-01), Greaney
Cohen Joseph T.
General Electric Company
Jackson Richard G.
MaLossi Leo I.
Willis Davis L.
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