Rheometer for measuring high pressure and high temperature with sampling

US4524611A · kind A · utility

Assignee

• Association Pour La Recherche Developpement Des Methodes Et Processus Industriels · FR

Inventors

• Dominique Richon · Annemasse, FR
• Henri Renon · Sceaux, FR

Key dates

• Filing date: May 10, 1983
• Grant date: Jun 25, 1985
• Expiry date: May 10, 2003

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2219/00168
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Rheometer for effecting measurement of rheological properties in a medium, comprising a hollow body (2) having an inner chamber (3) with a lower zone (3A) and an upper zone (3B) of enlarged diameter. An inner shaft (9) is located in the inner chamber (3) and is driven by a magnetic coupling (12A-13) through a cap (4) for hermetically sealing the hollow body (2). A rotor (18) is provided on the inner shaft (9) and is displaceable in a longitudinal direction between an upper position where it is located in the upper zone (3B) and a lower position where it is located in its position for measurement. A stirrer (10-11) is keyed to the lower part of the inner shaft (9) and is receivable within the rotor (18).