Non-dispersive infrared sensor
US11913879B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 20, 2022 |
| Grant date | Feb 27, 2024 |
| Priority date | — |
| Expiry date | Aug 13, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/0806
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is a sensor and method for detecting one or more gasses in a sample. The sensor includes two sample tube sections, which allow for a larger sample, and correspondingly, more accurate measurement. Having two sample tube sections increases the total length of the sample path. However, placing the sample tube sections in parallel allows for the performance of the sensor to be enhanced, but the footprint of the sensor to remain unchanged. Light pipe material may be used to transport the light between sample tube sections. Further, light pipe material may be used to move the IR lamp away from the first filter tube section, reducing problems in the thermopile by dissipating heat from the IR lamp away from the sample tube section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.