Apparatus and method for preventing blockage of a measuring head for effecting measurements of suspended substances
US5245200A · kind A · utility
Inventor
Key dates
| Filing date | Jan 10, 1992 |
| Grant date | Sep 14, 1993 |
| Priority date | — |
| Expiry date | Jan 10, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S250/901
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for preventing blocking of a measuring head intended for carrying out measurements on substances suspended in a flowing medium. A light beam is transmitted from a radiation source with a determined intensity which is essentially constant during the measuring process. the intensity of the radiation radiated from the medium is indicated with the aid of at least one radiation indicator. The electrical output signal of the radiation indicator is sent for evaluation to a signal processing device. An open measuring channel has two mutually opposing edges which are intended to be placed along the direction of medium flow. Radiation from the radiation source is emitted from the one edge and received at the other. Placed in connection with the measuring channel are radiation-conducting elements which are placed as close as possible to the outer part of the edges. All of the junctions between surfaces of different extension in the vicinity of the measuring channel are gently rounded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.