Replenishing system
US5512978A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1995 |
| Grant date | Apr 30, 1996 |
| Priority date | — |
| Expiry date | Jun 5, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/104
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus for measuring concentrations of a first vapor pressure carrier fluid component and a second vapor, pressure carrier fluid component in a carrier fluid mixture, including a supply vessel for holding the carrier fluid mixture. A light source is provided for transmitting an infrared light source to the carrier fluid mixture. Detector is provided for detecting infrared light intensity transmitted through the carrier fluid mixture, and, in response thereto, determining infrared absorption of carbon hydrogen stretching frequencies of the carrier fluid mixture. And means are provided for calculating concentrations of the first carrier fluid component and the second carrier fluid component in the mixture based on the infrared absorption of carbon hydrogen stretching frequencies of the carrier fluid mixture. This method can also be extended to a mixture of more than two fluids. A means for maintaining a predetermined ratio of the carrier fluids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.