Measuring and testing – Instrument proving or calibrating – Volume of flow – speed of flow – volume rate of flow – or mass...
Patent
1978-08-21
1980-03-18
Watkins, Donald
Measuring and testing
Instrument proving or calibrating
Volume of flow, speed of flow, volume rate of flow, or mass...
73432PS, G01N 1500
Patent
active
041932889
ABSTRACT:
An apparatus for producing a fluid flow containing particles of a given size is intended to calibrate the instruments for granulometric recording of particles in fluids. The apparatus comprises a chamber having an inlet port and an outlet duct to communicate with the inlet of the instrument being calibrated, and having a feeding duct to feed the chamber with reference particles. At least one portion of the chamber near the outlet duct is implemented as a horizontally oriented transparent cylinder in which a transparent duct is disposed coaxially with the cylinder. One end portion of the transparent duct tapers to a diametrical size which is commensurate with the maximum diameter of the reference particles. An inspection means to monitor the size of the reference particles is disposed above this end portion. The other end portion of the transparent duct is isolated from the chamber cavity and communicates with the feeding duct which is provided with an adjustable reverse pumping means capable of pumping the fluid with the reference particles through the feeding duct and the transparent duct.
REFERENCES:
patent: 3669542 (1972-06-01), Capellaro
patent: 3791192 (1974-02-01), Butler
patent: 3869208 (1975-03-01), Lorenz
patent: 3908465 (1975-09-01), Bartlett
Berber Viktor A.
Galishnikov Boris M.
Kholin Vladimir G.
Murtazin Khafiz M.
Pervushin Evgeny S.
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