Measuring and testing – Instrument proving or calibrating – Volume of flow – speed of flow – volume rate of flow – or mass...
Patent
1981-06-03
1984-11-13
Swisher, S. Clement
Measuring and testing
Instrument proving or calibrating
Volume of flow, speed of flow, volume rate of flow, or mass...
G01F 2500
Patent
active
044818050
ABSTRACT:
According to the invention, fluid is adapted to flow through a piston and cylinder disposed in the housing of a meter prover. The cylinder is telescopingly received within the piston. The fluid is permitted to flow into the piston and cylinder through an upstream inlet and leave through exit ports in the cylinder. A poppet valve is provided for closing the exit ports whereupon the piston becomes a fluid barrier and is adapted to move in synchrony with the fluid flow from the upstream fluid inlet. A single detector is provided which is activated at the start of the proving run and at the end of the proving run. A rack is mounted on the piston for turning a gear. The gear rotates a disc having a plurality of markings indicating the incremental displacement of the piston. A photopulser transmits a pulse to a counter for each marking detected upon rotation of the disc. Sufficient piston displacement is permitted to generate a minimum of 10,000 pulses. The counter does not start counting pulses until a meter pulse is generated by the counter of the flowmeter.
REFERENCES:
patent: 3492856 (1970-02-01), Francisco
patent: 3877287 (1975-04-01), Duntz
patent: 3933027 (1976-01-01), Mehall
patent: 3937048 (1976-02-01), St. Clair
patent: 4152922 (1979-05-01), Francisco
patent: 4324127 (1982-04-01), Gazzara
patent: 4347731 (1982-09-01), Fisher
Conley Ned L.
F. H. Maloney Company
Rose David Alan
Swisher S. Clement
Wise David S.
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