Falling ball viscometer

Function and Applications

For precisely measuring the viscosity of transparent Newtonian fluids in combination with a circulator thermostat.

The falling time of a ball with density r1 is measured in the fluid to be tested (denstiy r2) located in an inclined cylindrical downpipe. The dynamic viscosity can be calculated with using the measured falling time and a constant K which comes out of the apparatus table. 

Equipment and Technical Data

• Precision downpipe with distance mark in a pivoting glass cylinder mounted on a support base
• Tube olives  for the feeding of a thermostatic bath
• Measuring range: 0.6 .... 75000 mPa s (cP)
• Temperature range: -20 ... +120 °C
• Accuracy: 0.1 °C
• Diameter of the downpipe: 15.95 mm
• Thermometer -1 ... +26 (pitch 0.1 °C)
• 6 balls
• Ball gauge
• Ball tweezers
• Case and test certificate
• Cleaning equipment