Method and apparatus for measuring the density of a liquid
US5237853A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1992 |
| Grant date | Aug 24, 1993 |
| Priority date | — |
| Expiry date | Sep 14, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N9/32
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A process for monitoring fluid density by use of a fluidic jet oscillator (26) absent the necessity for a high-precision pressure regulator. Fluid is delivered to the fluidic oscillator (26) via a pressure divider (28). As the fluid flows through the oscillator the latter generates a pressure wavetrain at a frequency which is indicative of the density of the fluid, but is inaccurate to the extent that the pressure difference across the oscillator varies from a predetermined value. A differential pressure transducer (30) senses the pressure difference. Accordingly, the process is adapted for use with a gated sampling and control system (84) which operatively responds to the oscillator output only when the differential pressure is substantially in accord with a predetermined value thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.