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

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

The DVNext Wells-Brookfield Cone/Plate Rheometer is a high-precision instrument designed for measuring the absolute viscosity of fluids using small sample volumes. Its cone-and-plate geometry ensures accurate rheological data, making it ideal for researchers and developers.

How It Works

The rheometer operates as a precise torque meter, driven at specific rotational speeds. A calibrated beryllium-copper spring connects the drive system to a rotating cone, which is in contact with a stationary flat plate. The sample fluid between the cone and plate creates resistance to rotation, producing torque directly proportional to the fluid's shear stress. This torque can be easily converted into absolute viscosity (centipoise or mPa·s) using pre-calculated charts or by applying geometric and rotational data.

The correct alignment of the cone and plate is achieved through a simple mechanical process, eliminating the need for extra tools or external gauges. The sample cup, which holds 0.5 to 2.0 mL of fluid (depending on the cone used), can be easily removed, filled, and replaced without affecting calibration. It features a jacketed design for connection to a constant-temperature circulating bath, ensuring temperature control from 0°C to 100°C. The system boasts an accuracy of ±1.0% of the full-scale range and repeatability within ±0.2%.

The rheometer comes with one calibrated cone spindle, and additional spindles can be purchased and calibrated for the same sample cup.

Key Features & Benefits

• Measure absolute viscosity with small sample sizes (0.5–2.0 mL).
• Generate precise shear rates for detailed flow curve analysis.
• Rapid and reliable temperature control.
• Electronic gap adjustment for easy setup and higher efficiency.
• Auto-zero function for accurate torque readings.
• Auto-range feature to define the full-scale range for any spindle/speed combination.
• Torque accuracy: ±1.0% of full-scale range.
• Repeatability: ±0.2% of full-scale range.

The DVNext Wells-Brookfield Cone/Plate Rheometer combines accuracy, convenience, and versatility, making it an essential tool for generating reliable rheological data.

What's Included

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

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