Method and device for determining the deposits of components from a liquid on surfaces, in particular liquid pumping machines
US7175715B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 24, 2003 |
| Grant date | Feb 13, 2007 |
| Priority date | — |
| Expiry date | Dec 30, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L15/4297
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The invention relates to a method and device for determining the deposits of components from a liquid on surfaces, in particular in liquid pumping machines, comprising at least one body upon the surface of which said deposits occur, which affect the properties of an electromagnetic radiation, at least one transmitter and at least one receiver which measures the electromagnetic radiation emitted by the transmitter for the determination of the deposits. According to the invention, a calibration and a descaling of the sensor body may be avoided in a simple manner and whilst guaranteeing the secure function of the method and device, whereby any deposits of components from the liquid are removed from the surface of the body, without moving the body, at the beginning of a new measuring period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.