Device for determinging the profile of the loading surface of a shaft furnace
US5053775A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 1990 |
| Grant date | Oct 1, 1991 |
| Priority date | — |
| Expiry date | Sep 6, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/4017
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The device includes a radar antenna mounted at the inside end of an arm which can be horizontally inserted through the wall of the furnace above the loading surface, an electronic control and measuring unit placed outside the furnace, and one or two waveguides connecting the said antenna to the electronic unit through the arm. The waveguide or waveguides are duplicated by two reference waveguides of the same nature and of the same length but not connected to the said antenna systems in order to provide a forward and return path for a reference signal generated by the electronic unit and which remains correlated with the measurment signal to allow a better identification of the reflected signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.