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CANNON Product 
Mini-Rotary Viscometer (CMRV)
ASTM D3829 Standard Test Method for Predicting the Borderline Pumping Temperature of Engine Oil
ASTM D4684 Standard Test Method for Determination of Yield Stress and Apparent Viscosity of Engine Oils at Low Temperature
ASTM D6821 Standard Test Method for Low Temperature Viscosity of Drive Line Lubricants in a Constant Shear Stress Viscometer
ASTM D6896 Standard Test Method for Determination of Yield Stress and Apparent Viscosity of Used Engine Oils at Low Temperature
CMRV-5000 Mini-Rotary Viscometer
 
  • Self-Contained Air-Cooled Unit — Thermoelectric Temperature Control
  • Measures Yield Stress and Viscosity for
    Drive Line Lubricants and EngineOils
  • Meets Latest SAE J300 Specifications for
    Low-Temperature Pumpability
  • High-Performance Rotors with Carbon Fibre
    Shafts in Five Removable Cells for Easy Cleaning
  • Meets Requirements of ASTM D 4684, ASTM D 3829,
    ASTM D 6821*, and ASTM D 6896

CMRV-4500 Mini-Rotary Viscometer

  • Thermoelectrically-Cooled with Enhanced Temperature Control
    and Test Precision
  • Measures Yield Stress and Viscosity
  • Nine-Cell Capacity/Carbon Fibre Rotor Shafts
 CMRV-5000
CMRV-4500
The CANNON CMRV-5000 Mini-Rotary Viscometer is designed to measure yield stress and viscosity of drive line lubricants and new and used automotive engine oils over a temperature range of –5C to –40C, meeting ASTM D 4684, D 3829, D 6821 and D 6896 requirements. The CMRV instrument determines pumping viscosity in accordance with the latest SAE J300 specifications.

The CMRV-4500 contains nine small rotary viscometers within a thermostated aluminum block. The CMRV-4500 is cooled with built-in thermoelectric modules, eliminating the need for methanol-based external refrigeration devices. The CMRV-4500 uses a compact air/water heat exchanger that circulates a mixture of coolant water and antifreeze through the instrument to cool the hot side of the thermoelectric cells. The result is a quiet, low-maintenance system without potentially hazardous refrigerants. Solid-state thermoelectric cooling provides superb temperature uniformity for all nine test cells, removing temperature gradients not only from the left to the right side of the block, but also from front to back and top to bottom. A dry gas purge includes a side-mounted flow meter with a needle-valve adjustment, the resultant dry air flow to the test environment helps improve precision and avoid condensation around the test cells.


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