CO2-concentration sensor for interior use
US9880139B2 · kind B2 · utility
1Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 21, 2015 |
| Grant date | Jan 30, 2018 |
| Priority date | — |
| Expiry date | Jun 23, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A50/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor arrangement for determining the CO2 concentration in an interior space has an NDIR sensor unit that can determine the number of CO2 molecules on an optical measuring section and therefrom the CO2 concentration in an interior space. The sensor arrangement further has an evaluation unit that can calculate the air pressure from measurement values of the NDIR sensor unit and that can carry out an air-pressure compensation on the basis of the value calculated for the air pressure or of an air pressure correction value calculated therefrom for the measurement value of the CO2 concentration determined by the NDIR sensor unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.