Gas analyzer
US4180734A · kind A · utility
26Cited by
5References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 26, 1978 |
| Grant date | Dec 25, 1979 |
| Priority date | — |
| Expiry date | Jan 26, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/3504
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An illustrative embodiment shows infrared radiation divided into two beams which impinge on respective detectors via respective stationary filters, so as to provide measures of two constituents of a mixture of gases used for mixed anaesthesia. The same angled mirrors which provide the measurement beams may also be reflective on their sides toward the infrared source to provide reference beams to the filters and detectors such that the detectors may alternately sense the measurement and reference beams with the aid of beam interrupters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.