System for remote chemical analysis
US4663961A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1985 |
| Grant date | May 12, 1987 |
| Priority date | — |
| Expiry date | Sep 17, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The improved system for remote chemical analysis of this invention includes a quartz halogen bulb as a source of infrared light, quartz fibers leading to and from a sample cell, a non-collinear thallium arsenic selenide, AOTF to perform spectral analysis and a lead selenide detector, Both the AOTF and the detector are interfaced with a microcomputer. Under the control of the microcomputer, this equipment gathers and interprets transmission spectra obtained through the passage of infrared light through the sample cell. Microcomputer interface provides rapid random-access to the RF frequency driving the AOTF, which selects the wavelength of light to be examined and also provides routines for sample averaging and the comparison of various reference spectra. An acousto-optic device mounted in an enclosure which includes input and output crystal fiber connectors is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.