Introduction to the Reaction Torque Sensor

Reaction torque is a category of turning or moment force which is applied by the stationary segment of any device to a rotating segment upon the absorption of power, which further causes the former to move. It can transmit the power from the stationary part to the rotatory one by various means. These include magnetic force created by the magnetic field, generators or motors.

 

The reaction torque sensors are popular in the automotive industry as it is used to measure the efficiency of the brake, power of the motor, viscosity, and lubrication. These sensors serve a variety of purposes for measurement of torque, high reliable for motor and pump testing.

Why Reaction Torque Sensors Have Become So Popular in Varmus Industries?

The biggest reason that makes a reaction torque meter best suited for measuring torque in a complicated environment is that it doesn’t use the slip rings, bearings, and have no rotating elements. This ensures that the process of installation is not a big hassle and cost-effective. Besides that, these sensors are durable and easy to maintain.

 On What Principle a Reaction Torque Sensor Works?

To simply put a torque sensor is a strain gage based measuring equipment. Its output voltage is proportional to the force being applied to the device that causes the movement. The change in the resistance of the strain gage implanted to the torque measuring structure causes the fluctuations of the output voltage. The resistance change magnitude is in proportion to the torque sensor and the output voltage.

What is Structural Design of the Torque Sensor?

A torque sensor is an electrical accessory made out of premium-grade steel and is symmetrical in structure. The steel is heat treated in the configuration of RC 36 to 38. The prevalent configuration of the torque sensors is as follows-

•    Solid Circular Shaft
•    Hollow Circular Shaft
•    Hollow Tube with Flats
•    Solid Square
•    Hollow Cruciform
•    Hollow Circular Shaft
•    Cruciform

The sold circular design is considered a far better option compared to other structures. This is because it presents higher bending strength and the easy applications of the strain gage. This design type is commonly used in the measurement of torque in the capacity equal to or greater than the 500 in-lb. Whereas, for measuring torque with a value less than 500 in-lb, the Hollow Circular Shaft is termed as the best choice rated by industry experts. The technical reason being at low levels of torque, the hollow circular structure provide less stress and have a high bending ability of the sold circular structure. Like this, each design structure has its own set of pros and cons, you need to weigh this down to select the right one for your application.

After going through the above, you probably got an overview of what a reaction torque sensor is, how it works, its working principle, and its various structural designs.