Viscosimeter operating continuously especially at high temperature
US4478071A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1982 |
| Grant date | Oct 23, 1984 |
| Priority date | — |
| Expiry date | Dec 21, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N30/62
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention concerns a viscosimeter adapted to operate continuously, comprising a measuring capillary in which the liquid phase whose viscosity is measured undergoes a loss of pressure. It is characterized in that the measuring capillary (17) consists of a tube of several meters length, wound around itself according to a helix having a diameter of at least 10 cm, the internal diameter of the tube being substantially comprised between 0.20 and 0.30 mm, and in that a sensor for measuring the loss of pressure consists of two identical pressure sensors (22,23) positioned at the entry and at the exit of the capillary (17) for differentially measuring the loss of pressure in this capillary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.