Ultrasonic device for the measurement of the delivery of a fluid in a _conduit
US4475406A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 1982 |
| Grant date | Oct 9, 1984 |
| Priority date | — |
| Expiry date | Jul 8, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B2275/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ultrasonic device for measuring the delivery of fluid through a conduit. A pair of electroacoustic transducers are arranged in the wall of the pipe forming the conduit in a mutually confronting relationship along an axis inclined relative to the conduit axis. Each transducer is able to convert an electric signal of predetermined frequency into an ultrasonic wave which propagates through the fluid toward the confronting transducer. After a predetermined interval of transmission, each transducer receives the transmitted wave and converts it to an electric signal. A collimator is disposed in the path of the fluid upstream of the transducers. An oscillator outputs electrical signals of predetermined frequency to the transducers. In response to receipt of the ultrasonic waves, the transducers send electric signals to processing circuitry which detects the phase difference between the ultrasonic waves received by the respective transducers and correlates the phase difference with the delivery of fluid in the conduit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.