Method and apparatus for measuring a temperature of a molten metal
US6227702A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1999 |
| Grant date | May 8, 2001 |
| Priority date | — |
| Expiry date | Jun 21, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K1/125
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A temperature measuring device comprises: an optical fiber; a metallic protective tube for covering the optical tube to form a metal-covered optical fiber; and a radiation thermometer connected to the metal-covered optical fiber. A heat insulation coating can be formed to cover the protective tube. A level measuring device comprises: an optical fiber; a metallic protective tube for covering the optical tube to form a metal-covered optical fiber; a radiation thermometer connected to the metal-covered optical fiber; transfer device for sending the metal-covered optical fiber to a surface of a molten metal to be measured and retracting to wind the metal-covered optical fiber from the surface; and level determination device for determining a level of the surface of the molten metal based on a temperature change detected by the radiation thermometer and an amount of feed of the optical fiber through the transfer device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.