System, apparatus and method for dispensing chemical vapor
US7484399B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 29, 2005 |
| Grant date | Feb 3, 2009 |
| Priority date | — |
| Expiry date | Nov 28, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2001/2229
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This invention relates to a system for testing the operation of a detection instrument, which comprises a first enclosure having at least two ports and containing a fluid comprising a substance detectable in gas form by the instrument, said fluid being present in part as a vapor phase and in part as a liquid phase in equilibrium with one another, said first enclosure being interconnected with the instrument such that the fluid contained in the first enclosure can be dispensed to the instrument via at least one port of said first enclosure; a second enclosure having at least one port and containing either the same or a different fluid in gas form as compared with the first enclosure, said second enclosure being adapted for selective dispensing of a known or ascertainable mass of the fluid contained therein via at least one port thereof, and being interconnected with the first enclosure such that said mass can be introduced into the volume within said first enclosure through at least one port thereof, thereby to displace a correlative mass of the vapor phase fluid contained in the first enclosure causing said correlative mass to be dispensed to said instrument; and a valve in communi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.