Powder flow-rate measuring and controlling apparatus
US4743143A · kind A · utility
Inventor
Key dates
| Filing date | Sep 12, 1986 |
| Grant date | May 10, 1988 |
| Priority date | — |
| Expiry date | Sep 12, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/34
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
It is provided a powder flow-rate measuring apparatus wherein a conveying fluid is blown into the inlet of a detecting pipe line with a nozzle, a powder in fluidized state is introduced into said inlet, and the generated pressure difference due to acceleration of powder in the detecting pipe line is detected by means of a differential pressure gauge which communicates with an inlet side pressure detecting port arranged upstream the outlet of said nozzle and an outlet side pressure detecting port arranged at the outlet of detecting pipe line. The apparatus has characteristics stable for long period of time and is operable in a wide measuring range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.