Method and apparatus for use with vortex flowmeters

Patent · Mon Mar 06 23:00:00 EST 1989

OSTI ID:6250082

Watson, C A; Fox, H G; Nguyen, T Q

This patent concerns a flowmeter having an input connected to a vortex sensor producing an analog vortex signal and having an output providing an output signal that varies in accordance with the rate of flow of a fluid past the sensor. The apparatus comprises: means adapted to be connected to the vortex sensor for converting the analog vortex signal to a digital vortex signal having a period that varies in accordance with the rate of flow; means responsive to the digital vortex signal for generating a vortex period signal having a succession of values each of which is indicative of the duration of a respective one of the period of the digital vortex signal; and means connected to the period sampling means for generating an average frequency signal having a succession of values each of which is dependent on the average of the frequencies indicated by the then current and predetermined immediately preceding values of the vortex period signal.

• Assignee: ITT Corp., New York, NY
• Patent Number(s): US 4809558
• OSTI ID: 6250082
• Country of Publication: United States
• Language: English

Related Subjects

440300* -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
COMPUTERIZED CONTROL SYSTEMS
CONTROL SYSTEMS
DESIGN
DIGITAL SYSTEMS
ELECTRONIC CIRCUITS
EQUIPMENT
FLOW RATE
FLOWMETERS
FLUID FLOW
FREQUENCY DEPENDENCE
MEASURING INSTRUMENTS
METERING
METERS
PULSE CIRCUITS
SAMPLERS
SIGNAL CONDITIONERS
SIGNALS
VORTEX FLOW