Leak standard generator
US4164861A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1978 |
| Grant date | Aug 21, 1979 |
| Priority date | — |
| Expiry date | Feb 17, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D23/24
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A leak standard generator which utilizes the diffusion properties of a gas or vapor to deliver a uniform rate of flow of a leak sample into a diluent gas stream. The generator includes a reservoir containing the leak sample, a discharge head through which is passed a metered flow of diluent gas and a diffusion tube of prescribed dimensions for carrying a gas or vapor of the sample from the reservoir into the diluent gas stream moving through the discharge head. Heating means are provided to maintain the reservoir and the diffusion tube at different temperature levels to promote uniform movement of the sample gas or vapor into the diluent stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.