The Froude AC dynamometer has been specifically designed for the testing of gasoline and diesel engines in R & D and Quality Audit applications. 

Low inertia AC motor with standard speed ranges from 3,500 rpm to 10,000 rpm

Standard torque hub measurement accuracy is +/-0.2% of the full rated torque of the dynamometer

Speed is measured to an accuracy of +/- 1 rpm

Spesification