초록 ▼

A controlled fluid delivery system comprising a pump and electric drive apparatus which provides precise metering of the fluid, and includes an error correction apparatus by which the system errors may be compensated and calibrated to provide a precisely controlled fluid flow at a continuous speed o

A controlled fluid delivery system comprising a pump and electric drive apparatus which provides precise metering of the fluid, and includes an error correction apparatus by which the system errors may be compensated and calibrated to provide a precisely controlled fluid flow at a continuous speed or small quantities of the fluid by intermittent system operations. Furthermore, the apparatus is modular and may accommodate a variety of mechanical pumps. The controlled fluid delivery system communicates with other apparatus such as measurement devices and process control equipment through standard binary communication lines.

대표청구항 ▼

A controlled fluid delivery system, comprising: a pump providing a predetermined delivery of fluid between an input and an output through connecting tubing; electric pump drive means connected to said pump to provide said predetermined delivery of fluid according to a control signal; control means p

A controlled fluid delivery system, comprising: a pump providing a predetermined delivery of fluid between an input and an output through connecting tubing; electric pump drive means connected to said pump to provide said predetermined delivery of fluid according to a control signal; control means providing said control signal according to a desired flow rate; and error correction means providing a correcting signal to said control means in response to said desired flow rate and a measured corresponding flow, including at least one of a tubing ID compensation factor and a calibration factor derived from pump calibration, wherein said control signal corresponds to a signal derived from the product of the input flow rate, a pump motor parameter and at least one of said tubing ID compensation factor and said calibration factor.