Precalibrated flow meter
AssigneeTuthill Corporation
InventorsJohn E. Hathaway, Stephen R. Lund, Robert N. Mansur, Kraig J. Schlosser, John D. Buskirk
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Abstract
Precalibrated flow meters which include electronic modules that contain, in a storage memory thereof, a plurality of calibration factors that correspond to a plurality of different fluids. The calibration factors can be chosen during field operations using a touch pad on the face of the meters. The precalibrated flow meters monitor current and accumulative totals of fluid volumes. The precalibrated flow meters can be used in conjunction with air flow compensators which sense the flow of air through a fluid flow passage.
Claims8
A method of measuring fluid using a flow meter having a body with an inlet and outlet, a fluid-driven element within the body which moves in response to fluid flow between the inlet and outlet, a memory storage device and a processor, said method comprising the steps of
- (a) storing approximately 20 or more single point calibration factors in the memory storage device;
- (b) correlating each of said single point calibration factors to flow characteristics of a particular fluid flowing at a particular temperature;
- (c) providing an end user with a list of specific fluids and a corresponding list of the single point calibration factors which correlate to the flow characteristics of each specific fluid at a selected temperature;
- and
- (d) providing the end user with means for selecting one of the single point calibration factors for use in calculating, using the processor, fluid flow through the meter.
Dependencies are inferred from the claim text.