RTM 1900 Series Torquemeters

The RTM 1900 Series are flanged style reaction torquemeters available in capacities from 18,000 lbf-in to 300,000 lbf-in.  They are characterized by shorter overall length and higher torsional stiffness than shaft style models of the same capacity.

Reaction torque measurements permit accurate determination of static and dynamic torque with a stationary or non-rotating transducer.  They are based on Newton’s third law of angular motion, which states, “when a body exerts a torque upon another body, the second exerts an equal torque upon the first in the opposite direction and about the same axis of rotation.”

The illustration below shows the torquemeter measuring the reaction of the power absorbing device.  The torquemeter will measure the total reaction torque to the absorber, which may not necessarily be equal to the output torque of the motor.

All Himmelstein Reaction Torquemeters use temperature compensated full foil gage torque bridge sensors that provide inherent cancellation of bending and thrust signals.  They are constructed of 15-5 PH precipitation hardened stainless steel with exceptional fatigue properties.  Transducers subjected to full scale reversals have essentially infinite fatigue life.

General Specifications