Method and apparatus for determining delivery amounts and rates

Measuring and testing – Blower – pump – and hydraulic equipment

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73 3, G01M 1900

Patent

active

052633675

ABSTRACT:
A method to determine the delivery rate and delivery volume per unit of time of a liquid involves connecting one end of a sealed tube to the outlet of the pump, with the other end being provided with a pressure sensor. The pump is activated to pump liquid in to the tube, and air pressure readings are obtained at time intervals. The measured pressures may be used to determine the delivery rate of the pump. The delivery volume (V) is determined by the formula V=VO.times.A/(A+PO), wherein VO is the total tube volume, A is the measured air pressure, and PO is the absolute air pressure at the test beginning. Volumes not delivered by the pump due to back pressure may be determined by filling the tube with liquid and measuring the increase in liquid pressure per unit of time against the known delivery rate of the pump.

REFERENCES:
patent: 2566742 (1951-09-01), Odell
patent: 2795950 (1957-06-01), Liddell
patent: 3350934 (1967-11-01), Orkney, Jr. et al.
patent: 4461169 (1984-07-01), Augustin
patent: 4705459 (1987-11-01), Buisine et al.
patent: 4856343 (1989-08-01), Hon
patent: 5140862 (1992-08-01), Pappalardo

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