Calibrators for infrared-type gas analyzers
US5206511A · kind A · utility
16Cited by
4References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 18, 1990 |
| Grant date | Apr 27, 1993 |
| Priority date | — |
| Expiry date | Oct 18, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/274
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of and device for calibrating infrared radiation transducers. A concentration factor representing the ratio of a data signal to a reference signal for a known concentration of a designated gas in a sample containing that gas is generated. The concentration factor is stored and used during subsequent calibration procedures. The calibration device has a zero cell and a span cell with windows for transmitting infrared radiation and radiation reflecting or absorbing material in the span cell. The span cell therefore provides a known and consistent level of radiation absorption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.