Device and method for measuring temperature of heat-treated workpiece
US9377360B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 27, 2013 |
| Grant date | Jun 28, 2016 |
| Priority date | — |
| Expiry date | Sep 25, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J5/0875
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device is provided with a measurement window, which is provided in a heat treat furnace and which permits direct visual observation of a surface to be measured of a heat-treated workpiece, and a temperature sensor, which is provided outside the measurement window and which is capable of carrying out noncontact measurement of the surface temperature of the surface to be measured through the measurement window. The temperature sensor has a measurement wavelength range in which the absorptivity by water is low (e.g., 1.95 μm to 2.5 μm). Further, the measurement window is composed of a window material having a high transmittance in the measurement wavelength range (e.g., germanium).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.