Optical gas analyzer
US4069420A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 8, 1976 |
| Grant date | Jan 17, 1978 |
| Priority date | — |
| Expiry date | Mar 8, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/3504
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical gas analyzer is disclosed utilizing the infrared absorption principle having a sample chamber and reference chamber with infrared source and detector assembly spaced at opposite ends of and in alignment with the chambers with baffle means provided in cooperating relation with the infrared source to prevent cross-currents with respect thereto and masking means provided in cooperating relation with the detector assembly to mask out a gas having a partially overlapping infrared absorption band. The electronic processing system utilizes the total area under the signal waveform to derive the desired measurement. In addition barometric correction means is provided to permit on site calibration by the user of the gas analyzer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.