Electricity: measuring and testing – A material property using electrostatic phenomenon – In a liquid
Patent
1984-10-09
1988-09-27
Levy, Stewart J.
Electricity: measuring and testing
A material property using electrostatic phenomenon
In a liquid
324454, G01N 2760
Patent
active
047744537
ABSTRACT:
Flow velocity measurement apparatus for cryogenic liquid flowing in a pipe (1) past spaced upstream (12) and downstream (14) electrodes with triboelectric, flow-generated determined signals at the electrodes directed to a cross-correlator (2) which shifts the time bases of the signals relative to each other and reiteratively multiplies the shifted signals until a maximum multiplication product is achieved, the time shift associated with such maximum being flow transit time between the electrodes.
REFERENCES:
Carruthers et al, "Charge Relaxation in Hydrocarbon Liquids Flowing Through Conducting and Non-Conducting Pipes," Journal of The Institute of Petroleum, vol. 48, No. 462, Jun. 1962, pp. 169-179.
Beck, "Correlation in Instruments:Cross Correlation Flowmeters", Journal of Scientific Instruments, vol 14, 1984.
Dechene Ronald L.
Smith Thomas B.
Tougas Gary H.
Auburn International, Inc.
Cohen Jerry
Levy Stewart J.
O'Shea Kevin D.
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