Aerosol sensor
US9027385B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2009 |
| Grant date | May 12, 2015 |
| Priority date | — |
| Expiry date | Dec 1, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/206664
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method of measuring density of a sterilant aerosol e.g. aqueous hydrogen peroxide, in a gas stream (such as a stream of air) for the purposes of measuring sterilant dosage comprising: passing a gas stream at flow rate past an electrically heated element and measuring a first cooling effect, passing an aerosol suspended in a gas stream at flow rate past an electrically heated element and measuring a second cooling effect and measuring the difference between the first cooling effect and second cooling effect and correlating the difference with aerosol density. The total dosage can thus be determined. A measured dosage of a sterilant aerosol can be delivered by way of a feedback loop to halt further delivery of sterilant aerosol when the amount of aerosol delivered reaches a predetermined dosage. The methods allow sterilization to be certified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.