Brookfield DVNext Cone/Plate Rheometer, HA, Threaded, Point/Jewel, Compliant

Brookfield DVNext Cone/Plate Rheometer, HA, Threaded, Point/Jewel, Compliant

The DVNext Wells-Brookfield Cone/Plate Rheometer is an advanced laboratory instrument designed for precise measurement of absolute viscosity in fluids, particularly useful when working with small sample volumes. This rheometer excels in applications requiring detailed rheological analysis, providing high accuracy and repeatability.

Unveiling the Technology: How It Works

At its core, the DVNext Rheometer functions as a sophisticated torque meter. It operates by rotating a specially designed cone at precise, user-defined speeds. This cone is connected to the instrument's drive mechanism via a calibrated beryllium-copper spring. The fluid sample, typically a small volume between 0.5 mL and 2.0 mL, is carefully placed in a dedicated sample cup, positioned between the rotating cone and a stationary flat plate.

As the cone rotates through the sample, the fluid exerts a resistance, generating a torque that is directly proportional to the fluid’s shear stress. This torque is then precisely measured by the instrument. Based on this measurement, the DVNext Rheometer calculates the fluid’s viscosity in absolute units (mPa·s). To simplify data interpretation, users can leverage pre-calculated range charts or the specific geometric constants of the cone. This design ensures that measurements are both accurate and traceable.

Effortless Setup and Precision Control

One of the standout features of the DVNext Rheometer is its user-friendly design. Setting the critical gap between the cone and plate, a crucial step for accurate measurements, is remarkably straightforward and requires no external tools or additional instruments. This electronic gap adjustment capability significantly streamlines the setup process and enhances operational efficiency.

The sample cup is another testament to thoughtful engineering. It can be easily detached, filled with the test fluid (between 0.5 mL and 2.0 mL), and reattached without compromising the instrument's calibration. This feature is particularly beneficial when handling multiple samples or requiring quick turnaround times. For applications demanding precise temperature control, the sample cup boasts a jacketed design with tube fittings, allowing seamless integration with an external temperature control system. This enables the maintenance of sample temperatures between 0°C and 100°C, ensuring consistent testing conditions critical for many rheological studies.

The DVNext Rheometer guarantees exceptional performance with an accuracy of ±1.0% of the full-scale range and outstanding reproducibility of ±0.2%. Each instrument comes standard with one calibrated cone spindle, ready for immediate use. For specialized testing requirements, additional calibrated spindles are available for purchase, each designed for optimal performance with the included sample cup.

Advanced Features for Enhanced Performance

• Small Sample Volume Capability: Accurately measures absolute viscosity using minimal sample quantities (0.5 - 2.0 mL), ideal for precious or limited samples.
• Precise Shear Rate Control: Offers precise control over shear rates, enabling detailed analysis of flow curve behavior and characterization of non-Newtonian fluids.
• Rapid Temperature Control: Integrates seamlessly with external temperature control systems (0°C to 100°C) for stable and consistent testing environments.
• Electronic Gap Adjustment: Simplifies and automates the cone/plate gap setting, improving ease of use and measurement repeatability.
• Auto-Zero Function: Automatically sets the zero point for torque measurements, ensuring maximum accuracy and eliminating manual calibration errors.
• Auto-Range Function: Automatically defines the full-scale range (FSR) for all spindle/speed combinations, optimizing measurement sensitivity across different samples.
• High Torque Measurement Accuracy: Achieves an accuracy of ±1% of the full-scale range, providing reliable and trustworthy data.
• Exceptional Repeatability: Delivers outstanding repeatability of ±0.2% of the full-scale range, ensuring consistent results across multiple tests.
• User-Friendly Interface: Intuitive controls and clear display make operation simple for both experienced and novice users.
• Data Output Options: Compatible with data collection software for comprehensive analysis and reporting (software sold separately).
• Rugged Construction: Built with durable materials to withstand demanding laboratory environments and ensure long-term reliability.

The DVNext Wells-Brookfield Cone/Plate Rheometer is an indispensable tool for researchers, quality control professionals, and product developers who require precise, reliable, and efficient viscosity measurements, particularly in industries such as pharmaceuticals, cosmetics, food and beverages, and coatings. Its combination of advanced features, ease of use, and robust construction makes it a leader in rheological instrumentation.

What's Included:

• DVNext Wells-Brookfield Cone/Plate Rheometer Instrument
• Model G Lab Stand
• Durable Carrying Case for secure transport and storage
• One Calibrated Cone Spindle (specify type upon order or standard included)
• User Manual and Calibration Certificate

Note: To ensure full operational capability, it is essential to acquire at least one CPA (Cone/Plate) spindle and one CPA sample cup if not already included as standard. Different spindle types are available to accommodate a wide range of viscosity measurements and sample characteristics.