Particle measuring apparatus
US6183697A · kind A · utility
42Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 27, 1998 |
| Grant date | Feb 6, 2001 |
| Priority date | — |
| Expiry date | May 27, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N15/1404
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A particle measuring apparatus surrounds a sample with a sheath liquid to hydrodynamically converge and flow them, and optically measures a particle in the sample to obtain a signal data of the particle. The apparatus provides a monitoring section for comparing a pulse width of the signal data as obtained, with a predetermined standard value to obtain a comparison value and monitoring a flow rate of the sheath liquid based on the comparison value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.