Measuring and testing – Instrument proving or calibrating – Volume of flow – speed of flow – volume rate of flow – or mass...
Patent
1987-11-09
1989-05-23
Levy, Stewart J.
Measuring and testing
Instrument proving or calibrating
Volume of flow, speed of flow, volume rate of flow, or mass...
36457102, G01F 2500
Patent
active
048318663
ABSTRACT:
An apparatus for and method of calibrating a fluid meter having an output transformable into a series of digital pulses, where each pulse represents a certain volume of liquid through the meter that changes as a result of meter wear and/or component failure. A microprocessor controlled bidirectional prover tube having a calibrated volume is provided in the dispenser housing for operation once during each of a predetermined number of dispensing events. The digital pulses are accumulated during dispensation of the calibrated volume of fluid through the prover, and a calibration factor is automatically calculated and applied to the digital pulses prior to being supplied to an electronic display unit for accurate computation and display of the volume of liquid through the meter. A four-port, two-position valve is actuated prior to the beginning of each dispensing event by the microprocessor to reverse flow through the prover tube.
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RCA Solid State Databook SSD-250C.
Service Parts Manual for TCS Series Dispensers.
Forkert Maurice J.
Key William D.
Levy Stewart J.
Raevis Robert R.
Tokheim Corporation
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