The Fann RheoVADR® Variable Automated Digital Rheometer gives new meaning to the term “stand-alone.”

Digital Direct Reading Rheometer using couette geometry.

No Computer Needed

An operator can record Speed, viscosity, dial reading, and temperature using a USB flash drive and a computer is not required.

API Tests Pre-programmed

American Petroleum Institute standard drilling fluid and cement tests are pre-programmed into the RheoVADR® Rheometer. Detailed step by step instructions for each test are included in the manual.


  • Power - 100-240 VAC, 50/60 Hz
  • Temperature Accuracy  - 0.5°F 
  • Operating Temperature Range  - 40°F-125°F max sample fluid temp 200°F
  • Size  -  16 in x 5 in x 9.5 in
  • Ports -  Power, RJ45 serial, USB
  • Data Recording Speeds (intervals) - 100, 200 & 500 ms; 1, 5, 10 sec
  • Speeds  - 12 preset, Variable 0.01-999 RPM
  • Shear Rate Range (sec-1) - .017-1700

Get to Know the RheoVADR


Get to Know the RheoVADR

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The RheoVADR has been evaluated for compliance, and fulfills the requirements of EN 61010-1:2010, CAN/CSA C22.2 No. 61010-1-2012 and UL61010-2-030:2012.

Ordering Information

Part No. 102267855 - RheoVADR Rheometer with F1 Spring
Part No. 102406902 - RheoVADR Rheometer with F0.2 Spring
Part No. 102453150 - RheoVADR Rheometer with F2 Spring


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