รหัสสินค้า : XDVNXHBCBC0U00

Brookfield DVNext Cone/Plate Rheometer, HB, Threaded, Ball Bearing, Compliant

DVNext Wells-Brookfield Cone/Plate Rheometer

 The DVNext Wells-Brookfield Cone/Plate Rheometer is a cutting-edge instrument designed for precise viscosity measurement of fluids using small sample volumes. Its cone and plate geometry ensures exceptional accuracy, making it an essential tool for generating comprehensive rheological data.

How It Works

 The DVNext Rheometer operates as a precise torque meter, rotating at specific speeds. A calibrated beryllium-copper spring connects the drive mechanism to the rotating cone, measuring the resistance caused by the fluid sample between the cone and the stationary plate. This resistance generates torque proportional to the fluid’s shear stress, which can be converted directly into viscosity (mPa·s) using pre-calculated charts or calculated from the cone's geometric constants and rotational parameters.

Setting up the cone and plate is simple, requiring no external tools or gauges. The stationary plate doubles as the base of a sample cup, which accommodates 0.5 mL to 2.0 mL of fluid. The cup is jacketed for temperature control and connects to a circulating bath. The system offers an accuracy of ±1.0% of the full-scale range and reproducibility within ±0.2%. It operates efficiently across a temperature range of 0°C to 100°C.

Customizable Options

 The instrument comes with one calibrated cone spindle designed for the included sample cup. Additional spindles are available for purchase and can be calibrated for seamless integration.

Key Features & Benefits

• Measures absolute viscosity of small samples (0.5–2.0 mL)
• Provides precise shear rates for studying flow behavior
• Rapid, controlled temperature adjustments
• Electronic gap adjustment for easy setup and improved efficiency
• Auto-zero for precise torque measurements
• Auto-range to define full-scale range for spindle/speed combinations
• Torque accuracy: ±1% of full-scale range
• Repeatability: ±0.2% of full-scale range

The DVNext Wells-Brookfield Cone/Plate Rheometer is a reliable and efficient solution for researchers requiring accurate and repeatable viscosity measurements in small sample volumes.

What's Included

• Instrument
• Lab Stand (Model G)
• Carrying Case

Note: Requires at least 1 CPA spindle and 1 CPA sample cup to operate. 

• Determine Absolute Viscosity of Small Samples:
• Accurately measure the viscosity of samples as small as 0.5–2.0 mL, making this ideal for limited or precious materials.
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• Precise Shear Rates:
• Obtain detailed flow curve behavior of materials with precise shear rates, allowing for comprehensive analysis of fluid dynamics.
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• Rapid Temperature Control:
• Benefit from quick temperature adjustments due to the small sample size, enhancing efficiency and reducing wait times during testing.
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• Magnetic Coupling Attachment:
• Simplify spindle attachment and removal with a magnetic coupling system, streamlining setup and minimizing handling errors.
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• Electronic Gap Adjustment:
• Experience easier setup and increased throughput with electronic gap adjustment, reducing manual intervention and enhancing repeatability.
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• Touch Screen Display on DVNext Rheometers:
• Enjoy an intuitive user interface with a 7” touch screen display, offering direct access to all features and enhancing user experience.
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• Auto-Zero Function:
• Ensure precision torque measurement with the auto-zero function, which automatically calibrates the instrument for optimal accuracy.
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• Auto-Range Function:
• Automatically define the full-scale range (FSR) for all spindle/speed combinations, simplifying setup and ensuring accurate measurements across a wide range of conditions.
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• High Torque Measurement Accuracy:
• Achieve reliable results with a torque measurement accuracy of 1% of the full-scale range, ensuring consistent performance.
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• Exceptional Repeatability: Benefit from a repeatability of 0.2% of the full-scale range, providing consistent and reliable data across multiple tests.
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PRINCIPLE OF OPERATION

DVNext Cone/Plate Rheometer operates by measuring the torque required to rotate a cone spindle immersed in a small sample volume of fluid. The resistance to the cone's rotation, caused by the fluid, is directly proportional to the shear stress. This torque is then used to calculate the fluid's absolute viscosity in centipoise (mPa·s). The precise relative position between the cone and plate is maintained through a simple mechanical setup without the need for external gauges.

VERSATILITY OF APPLICATION

DVNext Rheometer offers a broad range of shear rates and viscosity measurements, making it suitable for various applications. Its small sample volume requirement is ideal for testing materials where sample availability is limited, such as biological fluids or expensive formulations. The instrument supports multiple cone spindles, which can be calibrated for specific applications.

ENHANCED CONTROL AND COMPLIANCE

• Digital Leveling:
• Ensures consistent setup and accurate measurements.
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• 21 CFR Part 11 Compliance:
• Optional compliance for regulated industries, with features like electronic signatures, audit trails, and secure data management.
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• LIMS Connectivity:
• Optional Ethernet and LIMS connectivity for seamless integration with laboratory management systems.

WHY CHOOSE THE DVNEXT CONE/PLATE RHEOMETER?

• Precision and Effeciency
• DVNext Rheometer is designed for high-precision viscosity measurements, particularly in small sample volumes, making it ideal for research and development applications.
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• Ease of Use
• With features like digital leveling and magnetic coupling, the DVNext Rheometer simplifies the testing process, reducing setup time and potential errors.
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• Compliance and Connectivity
• Optional features like 21 CFR Part 11 compliance and LIMS connectivity make the DVNext Rheometer suitable for regulated environments and seamless data integration.