Patent · US Expired

Laser-optical arrangement for measuring the degree of dispersion in flowing systems

US4752131A · kind A · utility

75Cited by

3References

6Claims

0Family size

Assignee

BASF SE

Inventors

Josef Eisenlauer · Burghausen, DE
Dieter Horn · Heidelberg, DE
Walter Ditter · Heidelberg, DE
Heinz Eipel · Bensheim, DE

Key dates

Filing date	Mar 28, 1985
Grant date	Jun 21, 1988
Priority date	—
Expiry date	Mar 28, 2005

Classification

Technology area (CPC G)Physics
CPC primaryG01N2201/08
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

In a laser-optical arrangement for producing signals by light scattering, obscuration or reflection, from flowing particles and/or groups of particles, which are recorded, as time-dependent voltage/current fluctuations, by means of a photodetector (9) via appropriate imaging optics (7,8,18), assignment to the degree of dispersion of the flowing system is based on a subsequent measurement (10) of the root-mean-square value, and, according to the invention, the sample stream (1) is separated from a transmitter (6,7,18) and a receiver (8,9,10) by an enveloping stream (4), and the transmitter side consists of an individual light-transmitting fiber (7) provided with a means for parallel or focused emergence of a light bundle having a diameter of the order of magnitude of the particles and/or groups of particles.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.