Cambridge Viscosity Blog

How do I know my new viscometer is working properly?

Jul 23, 2020 8:00:00 AM / by Patrick Riley

Each new Cambridge Viscosity viscometer ships with a certified hydrocarbon-based viscosity reference standard which is used to confirm proper system operation and accuracy.  A data sheet with viscosity versus temperature is included to provide precise viscosity values in increments of 0.1C.


To ensure proper performance, use the following steps:

  • Power off the ViscoPro2100 electronic and position the sensor in a nearly vertical position with the sensor opening facing upward
  • Remove the block deflector (if installed) and then the piston from the sensor using the supplied hex wrench and forceps (if using a 500 series sensor, simply grab the piston to remove it)
  • Fill the sample half way with the viscosity reference standard (~1mL)
  • Insert the piston into the sample chamber with the conical end down, gently pushing the piston to the bottom of the sample chamber
  • Install the flow deflector and the fluid reservoir plastic tube on the top of the sensor and fill the sample chamber with additional fluid as required
  • Power on the ViscoPro2100


After the system has operated a few minutes, the indicated viscosity and temperature of the sample fluid should stabilize and correspond approximately to the viscosity value shown on the reference standard chart.  Operation of the sensor in free air may cause drift and other temperature effects which will prevent realization of the full specified accuracy. If a higher degree of accuracy verification is necessary, it is recommended to use a fan to blow air onto the sensor so as to minimize temperature variations.


When you have familiarized yourself with the operation of the viscometer and verified proper performance, disconnect the power, remove the piston, and clean both piston and sensor with an alcohol-based solvent or a standard degreaser. Reinsert the piston and secure the flow deflector (if present) before use.

Contact with any questions.

Tags: monitor viscosity, in-line viscometers, viscometer

Patrick Riley

Written by Patrick Riley

Vice President of Process Analytics

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