Method and device including a bed of ferromagnetic fibers and magnetic flux sensor for measuring the amount of magnetic particles on a liquid
US4692698A · kind A · utility
14Cited by
1References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 7, 1986 |
| Grant date | Sep 8, 1987 |
| Priority date | — |
| Expiry date | May 7, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/72
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved method and device for measuring magnetic particles in a liquid wherein a known amount of liquid is contacted with a bed of ferromagnetic fibers maintained in the magnetic field of a magnet with sufficient strength to substantially completely magnetize said particles for a time long enough for said particles to migrate to and be substantially completely captured by said fibers and having a magnetic flux sensor positioned between a pole face of said magnet and said bed wherein the distance from said sensor to the fibers farthest from said sensor is not greater than about 6 millimeters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.