RHEOGRAPH 20

The RHEOGRAPH 20 is the perfect entry-level model for viscosity measurements. Add-ons, which can be attached to the testing device in a modular way, enable the measurement of additional material properties.

viscosity

ASTM D3835 (Viscosity)
ISO 17744 (PVT)
ASTM D5930 (TCM)
ASTM D5099 (Rubber)
ISO 11443 (Viscosity)

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GÖTTFERT product overview Capillary Rheometer

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The entry model of the newly developed high-pressure capillary-rheometer series from GÖTTFERT is a rheometer with a test load of 20 kN. In addition to viscosity measurements according to ISO 11443, the RHEOGRAPH 20, or RG20 for short, can also be used to determine other material properties by means of various add-ons. The RG20 is available as one or two-barrel version with different barrel diameters. We also offer a wide range of capillaries and additional options that make it possible to adapt the device perfectly to your application.

An essential improvement of this series compared to the previous generation is the much more accurate pressure measurement. This makes it possible to significantly increase the reproducibility and precision of the test results. Especially the extremely low pressures at very low shear rates can be measured perfectly now.

Due to this improvements GÖTTFERT lifted the market standard to a higher level.

Highlights

Maximum test force of 20 kN and up to 2500 bar pressure
One- or two-barrel system with diameter 9.55, 12, 15 or 20 mm
Dynamic speed from 0.0001 mm/s (0.006 mm/min) – 30 mm/s (1800 mm/min)
Piston position measurement with high-resolution encoder (0.000053 mm)
Adaptive signal resolution of only 0.005 % from the pressure transducer range
Integrated tempering jacket
Temperature up to 400°C (500°C optional)
Alternative steel grades for barrel and piston with higher corrosion or abrasion resistance
Optional: Isothermal or isobaric PVT-measurements
Optional: Innovative air-cooling system, cooling rate max. 30 K/min