Viscosity Analyzers for Refining: Petroleum and Biofuels

Viscosity Measurement for Refinery Products 


  • Tests samples in-line, reducing inconsistencies and errors caused by off-line analysis 

  • Alarms at viscosity spikes

  • Automatically calculates temperature-compensated viscosity (TCV) and pressure-compensated viscosity (PCV)

  • Resists corrosion

  • Functions properly even during variations in flow, process vibrations, fluid non-homogeneity, particles, and temperature changes

  • Uses the same core technology in process and lab viscometers for excellent correlation 

  • Fully complies with ASTM D7483 

Refinery Viscometer

Asphalt and Lubrication Oil Refineries White Paper

Viscosity is one on the most critical measures of product quality for virtually every refinery product.  New developments in viscosity measurement are enabling refineries significant improvements in production quality, cost and output. Download our white paper to learn more. 

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Cambridge Viscosity’s viscometers function accurately and reliably at the full range of refinery and transport temperatures.

Viscosity is a key differentiator in separating and grading the full range of petroleum, as well as biofuel refinery products. Unfortunately, fluctuations in material and process characteristics present significant challenges for measurement accuracy from crudes to aromatics to lube oils to asphalts. Inaccuracies and delays in viscosity measurement slow throughput, require extra plant capacity, and significantly raise refining costs. 


Biodiesel has its own special challenges. If the viscosity spikes, it usually means that un-reacted material is going through the line. Cambridge Viscosity’s system sounds an alarm when the viscosity spikes, alerting the operator to make the appropriate adjustments before the quality of the product can be negatively affected. 


Cambridge viscosity analyzers function accurately and reliably at the full range of refinery and transport temperatures. They also automatically calculate temperature-compensated viscosity and pressure-compensated viscosity, ensuring accurate results no matter how harsh the conditions. Due to our innovative design, Cambridge Viscosity sensors are in direct contact with the material and self-cleaning, ensuring low maintenance costs and downtime. Furthermore, samples can be tested in-line, reducing the inconsistencies and evaporation caused by taking samples for off-line analysis. 


Robust, durable, and with self-cleaning capabilities, our viscosity analyzers are designed to support the unique requirements of the refining and petroleum industries.

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Our Industry Partners

Metrix logo

Metrix Instrument  is the leading vibration monitoring solution provider  to the world's leading manufacturers and users of rotating machinery. Visit us online at

PAC logo

PAC is the leading manufacturer of lab & process analyzers for gas chromatography, elemental analysis & physical properties. Visit us online at 

Amot logo

AMOT is a world leading designer and manufacturer of energy control valves, safety, and monitoring products for engines, compressors, turbines, and other rotating equipment. Visit us online at

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