Rosand RH2000
Model No. :
Brand : Netzch
The Rosand RH2000 is a versatile benchtop capillary rheometer engineered for research, product development, and quality control of polymer melts and complex fluids. Combining a rigid cantilever frame with advanced digital drive technology, it provides high-force extrusion capabilities to characterize material flow properties under realistic processing conditions.
-
Flexible single or twin-bore barrel configurations
-
Maximum drive force up to 20 kN
-
Dynamic speed range exceeding 400,000:1
− Features
Rosand Twin Bore Principle (RH2200 Model)
Rosand capillary rheometers were the first to introduce the twin bore measurement principle to the commercial market. Simultaneous measurements can be made on both long and short dies to determine the inlet pressure drop at the die and, therefore, absolute viscosity, using the Bagley method. More commonly, Rosand zero length dies are used to directly measure the inlet pressure drop and measure the extensional viscosity using the Cogswell method.
The twin bore technique gives obvious experimental advantages including improved throughput, since both experiments are preheated simultaneously. Alternatively, the software can be configured to run a two material test which allows measurement of the viscosity of two different materials simultaneously.
Rigid Frame Design
Rigid one-piece cantilever frame design provides extreme mechanical strength and stiffness for a compact benchtop unit.
Swivel Head Design
A unique, safety interlock protected, swivel design means that the actuated part of the rheometer can be moved to one side affording ease of access for cleaning and sample loading.
Bi-Modal Speed Control
Bi-modal digital speed control technology has been developed for the latest generation of capillary rheometers. The technology uses different speed control algorithms suited to high and low speed operation to optimize performance. This gives the rheometer an impressive dynamic range in speed control. In practice, the lower limit is determined only by long experimental times at low shear rates but a dynamic range in speed of in excess of 200,000:1 is available if required. This greatly enhances the system’s flexibility and means that a wider range of shear rates can be covered using any particular die.
+ Technical Specifications
+ Software
+ Resources
Features
Rosand Twin Bore Principle (RH2200 Model)
Rosand capillary rheometers were the first to introduce the twin bore measurement principle to the commercial market. Simultaneous measurements can be made on both long and short dies to determine the inlet pressure drop at the die and, therefore, absolute viscosity, using the Bagley method. More commonly, Rosand zero length dies are used to directly measure the inlet pressure drop and measure the extensional viscosity using the Cogswell method.
The twin bore technique gives obvious experimental advantages including improved throughput, since both experiments are preheated simultaneously. Alternatively, the software can be configured to run a two material test which allows measurement of the viscosity of two different materials simultaneously.
Rigid Frame Design
Rigid one-piece cantilever frame design provides extreme mechanical strength and stiffness for a compact benchtop unit.
Swivel Head Design
A unique, safety interlock protected, swivel design means that the actuated part of the rheometer can be moved to one side affording ease of access for cleaning and sample loading.
Bi-Modal Speed Control
Bi-modal digital speed control technology has been developed for the latest generation of capillary rheometers. The technology uses different speed control algorithms suited to high and low speed operation to optimize performance. This gives the rheometer an impressive dynamic range in speed control. In practice, the lower limit is determined only by long experimental times at low shear rates but a dynamic range in speed of in excess of 200,000:1 is available if required. This greatly enhances the system’s flexibility and means that a wider range of shear rates can be covered using any particular die.
Technical Specifications
| Parameter | Value |
| Number of bores | ▪ RH2100: single ▪ RH2200: double |
| Maximum force | 12 kN standard (20 kN option) |
| Frame stiffness | 100 kN |
| Maximum speed | 600 mm/min standard (1200 mm/min high-speed option) |
| Dynamic range in speed | 200,000:1 (400,000:1 with high speed option) |
| Speed uncertainty | < 0.1 % |
| Temperature range | Ambient to 400°C (500°C option) 5°C to 300°C (low-temperature cooling coil option) |
| Temperature control | < ± 0.1°C |
| Bore diameter | 15 mm standard (9.5, 12, 19 and 24 mm bore options) |
| Barrel bore length | 250 mm |
| Barrel material | Nitrided steel standard (Hastelloy or stainless steel options) |
| Pressure transducer ranges | 30000, 20000, 10000, 5000, 1500 or 500 psi |
| Pressure transducer accuracy | < 0.5 % |
| Dies | Tungsten carbide, precision ± 5µm |
| Die diameter | 0.5 to 2 mm (in 0.5 mm increments) and 3 mm standard (other diameters, including fine bore dies, available to special order) |
| Height | Rheometer 1.1 m Electronics box 0.65 m |
| Width | Rheometer 0.55 m (without accessories) Electronics box 0.34 m |
| Depth | Rheometer 120 kg (without accessories) Electronics box 30 kg |
| Power requirements | Single phase, AC, 230 V, 50 Hz, 16 A |
Application & Standards
Accessories
Software
Flowmaster software
Software Modules and Analysis Functions Included
- Constant shear test
- Extensional test
- Manual control
- Flow/no flow
- Non-Newtonian index
- Bagley correction by orifice die and extrapolation methods
- Rabinowitsch correction
- Hagenbach correction for fluid inertia
- Cogswell convergent flow model and extensional viscosity measurement
- Extensive plot and print options
- Data export
FAQs
Related Products
Advancing research and development through reliable, high-quality scientific instruments tailored to your needs.
Related products
Dropping Point Instrument
DSC300 Caliris
LA Analytical & Precision Balance
MA Precision Balance
Melting Point Instrument
