Non-dispersive infrared analyzer
US4514635A · kind A · utility
7Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1982 |
| Grant date | Apr 30, 1985 |
| Priority date | — |
| Expiry date | Oct 29, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/37
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A non-dispersive infrared analyzer for determining the concentration of two components of a sample fluid. A zero fluid and a sample fluid are alternately supplied to two cells. Two pneumatic detectors are respectively optically arranged in series with two light sources such that the two cells are respectively sandwiched between the two light sources and the two detectors. At least one filter whose passband corresponds to the absorbtion bands of one of the two components of the sample fluid is located directly adjacent to and optically in series with at least one of the two cells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.