DVNext Cone/Plate Rheometer-RV Torque Range

DVNext Cone/Plate Rheometer-RV Torque Range

DVNext Cone/Plate Rheometer-RV Torque Range


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The DVNext Wells-Brookfield Cone/Plate Rheometer gives researchers a sophisticated instrument for routinely determining the absolute viscosity of fluids in small sample volumes. Its cone and plate geometry provides the precision necessary for the development of complete rheological data. 

PRINCIPLE OF OPERATION The DVNext Wells-Brookfield Cone/Plate Rheometer is a precise torque meter that is driven at discrete rotational speeds. The torque measuring system, which consists of a calibrated beryllium-copper spring connecting the drive mechanism to a rotating cone, senses the resistance to rotation caused by the presence of sample fluid between the cone and a stationary flat plate. The resistance to the rotation of the cone produces a torque that is proportional to the shear stress in the fluid. This reading is easily converted to absolute centipoise units (mPa·s) from pre-calculated range charts. Alternatively, viscosity can be calculated from the known geometric constants of the cone, the rate of rotation, and the stress-related torque. 

Features and Benefits
  • Determine absolute viscosity of small samples (0.5 - 2.0 mL)
  • Precise shear rates for determining a material's flow curve behavior
  • Rapid temperature control due to small sample size
  • Electronic gap adjustment for simplified setup and increased throughput
  • Touch Screen Display available on DVNext Rheometers
  • Auto-zero function to ensure precision torque measurement
  • Auto-range function to define full-scale-range (FSR) for all spindle/speed combinations
  • Torque measurement accuracy: 1% of full-scale range
  • Repeatability: 0.2% of full-scale range


Viscosity Range* cP(mPa·s)
MODEL Cone Spindle: CPA-40Z
Sample Volume: .5mL
Shear Rate (sec-1): 7.5N
Cone Spindle: CPA-41Z
Sample Volume: 2.0mL
Shear Rate (sec-1): 2.0N
Cone Spindle: CPA-42Z
Sample Volume: 1.0mL
Shear Rate (sec-1): 3.84N
Cone Spindle: CPA-51Z
Sample Volume: .5mL
Shear Rate (sec-1): 3.84N
Cone Spindle: CPA-52Z
Sample Volume: .5mL
Shear Rate (sec-1): 2.0N



Number of Increments

DVNXLVCP .1-3K .5-11K .2-6K 2-48K 3-92K .01-250


DVNXRVCP 1-32K 5-122K 2-64K 20-512K 39-983K .01-250


DVNXHACP 2.6-65K 10-245K 5-128K 41-1M 78-2M .01-250


DVNXHBCP 10.5-261K 39-982K 20-512K 163-4M 314-7.8M .01-250


B=1 Billion M=1 million cP=Centipoise mPa·s=Millipascal·seconds mL=Milliliter N=RPM
e.g. Spindle CPA-40Z 7.50x10(rpm)=75.0 sec-1
*Dependant upon cone selected.



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