Patent ID: 11914401
Assignee: PNEUMA SYSTEMS CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC G  F  A | IPC F  G

Claim 9:
10. A method of determining fluid flow characteristics in a liquid delivery system comprising:
producing a gas drive pressure at a given value from a tightly load-coupled pneumatic driver (a “TLCP” driver) by providing an input power to move gas into a gas reservoir having a known volume, the gas drive pressure configured to move fluid in a fluid reservoir;
measuring the pressure in the gas reservoir to provide a gas reservoir pressure;
measuring the pressure in the fluid reservoir to provide a fluid reservoir pressure;
pneumatically coupling the gas reservoir and a fluid reservoir by opening a valve therebetween so that the gas reservoir pressure and the fluid reservoir pressure become substantially the same;
measuring a pressure in the gas reservoir and/or the fluid reservoir after the gas reservoir and the fluid reservoir are pneumatically coupled;
calculating a pressure change in the gas reservoir;
calculating a pressure change in the fluid reservoir; and
calculating the volume of liquid within the fluid reservoir as a function of the pressure change in the fluid reservoir and the gas reservoir.