R /S+ Series Rheometers

The R/S Plus Rheometer is available in three configurations: Model R/S Coaxial Cylinder, Model R/S-CPS (cone/plate or plate/plate) and Model R/S-SST (soft solids tester/vane) for a variety of sample types.

The rotational motor developed for this rheometer utilizes a high dynamic precision drive system without gearing or mechanical force transducers. The torque is therefore controlled without deflection. A 400,000 line optical encoder carefully measures spindle position during rotation. This combination of motor drive and optical encoder enables the R/S to be controlled via Controlled Shear Stress (CSS) or Controlled Shear Rate (CSR). With its wide torque range capability (0.05 to 50 mN•m), the R/S Plus Rheometer can handle most applications usually limited to the high-end research Rheometers.

Controlled Shear Rate provides important information on flow behavior showing how viscosity changes with spindle speed and time. Data analysis using RHEO3000 software allows for plotting of flow curves, quality control min/max limits, math models, data averaging and many more analysis functions.