Contactless measurement of the surface temperature of naturally or artificially weathered samples
US7353722B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 17, 2004 |
| Grant date | Apr 8, 2008 |
| Priority date | — |
| Expiry date | Oct 7, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N17/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A holding frame (2) is mounted in a weathering chamber (1) of a weathering tester so that it can be rotated around a xenon radiation source (3), which is located on the cylinder or rotation axis, and an infrared filter (5) placed around it. Samples (3) to be weathered are fastened to the inside of the holding frame (2) and are exposed to the radiation from the xenon radiation source (4). The surface temperature of the samples (3) can be recorded directly by a black-body radiation detector such as a pyrometer (6), which is aimed at a stationary region of space through which the samples (3) pass periodically during their rotational movement. The surface temperature can be computed in an evaluation circuit from the detected black-body radiation, together with emissivity values stored for the individual samples (3).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.