Apparatus for optically evaluating colorimetric coloration zones on a carrier to automatically detect gaseous and/or vaporous components of a gas mixture
US5397538A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1994 |
| Grant date | Mar 14, 1995 |
| Priority date | — |
| Expiry date | Feb 10, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/112499
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention is directed to an apparatus for optically evaluating colorimetric coloration zones automatically wherein not only a single testing tube but also a plurality of reaction zones applied one behind the other to a common carrier can be evaluated. The least quantity of indicator substances for the coloration zones is used and an adequate signal intensity with the least possible consumption of power for the optical signal evaluation is attained. At the same time, the sensitivity to faults is reduced. Such an apparatus includes transmission as well as receiving units on a common mounting carrier. The light of the transmitting unit is conducted via a light conductor through the region of the reagent carrier which is transmittent and the coloration of the channel-shaped reaction zones of the carrier is detected in transmission and reflectance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.