Gas analyser
US9395246B2 · kind B2 · utility
0Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2013 |
| Grant date | Jul 19, 2016 |
| Priority date | — |
| Expiry date | Oct 23, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/05
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A gas analyzer and a corresponding method is provided to measure the concentration of formaldehyde within enclosed environments such as within buildings comprising an ultraviolet light source, a sample chamber, a detector. The detector measures the intensity of light received by photosensors within a measurement range of wavelengths, and at least one reference range of wavelengths. Advantageously, the concentration of formaldehyde is determined taking into account fluctuations in the intensity of light emitted by the light source, and in the presence of any interferents such as nitrogen dioxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.