Chemically inert flow meter within caustic fluids having non-contaminating body
US5672832A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 1996 |
| Grant date | Sep 30, 1997 |
| Priority date | — |
| Expiry date | Feb 15, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/363
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A non-contaminating flow meter having an isolation member is disclosed. The flow meter includes two pressure sensor transducers, located on opposite sides of a restriction in a conduit. Each of pressure transducers is isolated by an isolation member from exposure to fluids flowing through the conduit. The flow meter may be positioned in-line within a fluid flow circuit carrying corrosive materials, wherein the square root of the difference in pressure between the two pressure sensors is calculated to thereby determine the rate of flow within the fluid flow conduit. The flow meter compensates for changes in temperature within the fluid flow circuit and further activates an alarm if the pressure or flow rate within the fluid flow conduit exceeds or falls below a threshold level. The flow meter of the present invention also avoids the introduction of particulate, unwanted ions, or vapors into the flow circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.