Real-time particle counter for liquids with nebulizer and dryer
US4894529A · kind A · utility
14Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 3, 1988 |
| Grant date | Jan 16, 1990 |
| Priority date | — |
| Expiry date | Nov 3, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2015/0681
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A real-time particle counter apparatus for monitoring contaminant particles in liquids includes a nebulizer, a drying chamber and a counter. The nebulizer provides an aerosol of droplets containing particles to the drying chamber, and the droplets are evaporated leaving solid particles to be counted and sized by the counter. Liquid is recirculated in a closed loop by pumping means that moves the liquid between the liquid source and the nebulizer. A constant air flow containing particles is provided to the counter and the apparatus is self-regulating so that no operator is required to maintain the level of liquid in the nebulizer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.