Gas analyzer
US4485666A · kind A · utility
17Cited by
5References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 18, 1982 |
| Grant date | Dec 4, 1984 |
| Priority date | — |
| Expiry date | Aug 18, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/70
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A portable gas analyzer uses a pump to take a gas sample and pump it through a carbon monoxide sensing cell, an oxygen-sensing cell and a methane-sensing pellister. Concentrations of these gases are displayed continuously on LCD displays. The gas analyzer is particularly useful in underground coal mines and offers the possibility of replacing many different gas analyzers with a simple convenient apparatus which gives continuous readings of all the critical gas concentrations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.