Torque Sensor

What is a torque sensor?

Torque is usually seen as the rotational equivalent of linear force (rotational or dynamic torque). Another type of torque is reaction torque, which is static. A torque sensor is a sensor that can measure torque by converting mechanical torque into an electrical output signal. When the torque applied to the sensor increases, the electrical output signal changes proportionally. There are various torque sensors available in the market. The most commonly used technology in these sensors is strain gauges, especially for rotational torque. Strain gauges convert strain derived from force into a change in electrical resistance. For reaction torque, the most used method is a piezoelectric sensor.

Torque sensor with handheld reader

BoltSafe’s torque sensor equivalent

BoltSafe offers bolt load sensors that measure the bolt load in a bolted construction during assembly and over time. These sensors can be used to determine the right tool setting for tightening the bolts to reach the desired bolt load. The coefficient of friction can now be determined with a simple test rather than guessed. Without BoltSafe sensors, gasket joints can start leaking or are overloaded to compensate for later relaxation, especially when using hydraulic tensioners. Bolts could come loose or even break. Our torque sensor equivalent prevents these problems and the unnecessary checkups that come along with these issues.

BoltSafe does not use strain gauges or piezoelectric technology, but magnetoelastic technology. Our sensors measure the change in the magnetic field instead. Place a BoltSafe sensor on the non-driven side of a bolted connection, preferably under a nut. When the bolt is being tightened, force is applied to the washer. This will result in a minor deformation of the washer. The sensor then measures the changes in electrical resistance caused by these deformations. This is the data that we use to determine the bolt load at any given moment.

Contact us for more information or to order our sensors

Benefits of BoltSafe sensors

  • Using magnetoelastic technology instead of strain gauges or piezoelectric technology makes our sensors more compact and less expensive.
  • The bolt load is measured across the entire surface of the ring instead of using just a few pressure points.
  • There is no calibration needed on the side of the readout equipment, because calibration is done in the load sensor. Even when switching between readout methods, recalibration is not necessary.
  • BoltSafe sensors send out only digital signals and are able to withstand loads between 18 kN to 3000 kN.
  • Since the sensors have almost no creep effect, they are drift free. Using the washers in any given circumstance gives a maximum deviation of 5% of the full scale.
  • The sensors are dust free and water resistant because they meet the IP66 rating.
  • Different BoltSafe readout methods can be coupled to the sensors, which provides a suitable readout possibility for every situation.
BoltSafe torque sensor equivalent

 

 

 

 

 

 

 

 

Bolt load sensors

BoltSafe bolt load cells are specially designed to monitor the bolt load in bolted joints. Knowing this information enhances safety, makes joints more dependable and results in better control over bolted constructions. 

Readout methods

BoltSafe bolt load cells can send their data to different readout methods. We offer the following: the Handheld Reader, Network with PDI, Network with PDI-NT, RS-232 and Analog Converter and the IoT-node.

BoltSafe bolt load cells load sensors

Bolt load sensors

BoltSafe bolt load cells are specially designed to monitor the bolt load in bolted joints. Knowing this information enhances safety, makes joints more dependable and results in better control over bolted constructions.

BoltSafe readout methods

Readout methods

BoltSafe bolt load cells can send their data to different readout methods. We offer the following: the Handheld Reader, Network with PDI, Network with PDI-NT, RS-232 and Analog Converter and the IoT-node.

Are you interested in using or distributing our bolt load sensors? Please contact us through info@boltsafe.com or call us at +31246790797. If you have any questions about the functionality, usability or applicability of our products, do not hesitate to contact us.

Get your next project done!