Strain Measurement

Why choose a BoltSafe sensor for strain measurement?

  • Measuring the load is done across the entire surface of the ring, instead of using just a few pressure points like strain gauges do.

  • Calibration is done once inside the sensor and there is never any need for recalibration or calibration at the side of the readout equipment.

  • BoltSafe sensors are able to withstand very high and low loads between 18 kN to 3000 kN. A strain sensor using strain gauges is usually incapable of handling such high loads and therefore the chances of overloading decrease when using BoltSafe.

  • Only digital signals are sent out, which can be converted to an industrial standard when some of our readout methods are used.

  • We assure a maximum deviation of 5% of the full scale in any possible circumstance because our load cells have almost no creep effect and are drift free.

  • Because they meet the IP66 rating, they are dust free and water resistant.

  • There is a variety of readout methods available to fit various strain measurement wishes, applications and situations in different industries.

Strain measurement sensor

 

 

 

 

 

 

 

 

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.

What is strain measurement?

Strain is used to describe the measurement of deformation of a material, usually the relative change in length of a component under stress. This is either an extension (elongation) or contraction (compression), also known as tensile and compressive strain. The result of expanding the component is described as positive strain. The result of compressing the component is described as negative strain. Strain measurement is done by strain sensors, that measure the strain that results from forces being applied to the structure. The change in resistance caused by these forces is related to the strain by the quantity known as the gauge factor. The most commonly used strain sensors in the market are based on strain gauge technology, which is the most popular strain measurement technology. The strain gauge sensor is then placed on the component and has a linear output, but becomes non-linear at the extreme lows and highs in its range. This might cause errors when precise measurements need to be made. Besides strain gauges, there are also other technologies available for load, weight, force and strain measurement.

Contact us for more information or to order our load sensors

Strain measurement

BoltSafe offers an alternative method for strain measurement

One of the technologies suitable for strain measurement is magnetoelastic technology, this is the technology that BoltSafe sensors use. With this technology, the changes in the magnetic field are measured. BoltSafe load cells are specifically designed to measure bolt load during assembly and over time, but are also capable of measuring other types of load. An example of another application of our products is in temporary construction and for Structural Health Monitoring. Knowing the bolt load in a bolted construction enhances safety, makes joints more dependable and assures better control.

The sensors are used as washers when they are used for measuring bolt load, and placed on the non-driven side of a bolted connection, preferably under a nut. When the bolt is tightened and force is applied, minor deformations occur on the stainless steel. This results in a change in the electrical resistance, that our sensor measures and uses to determine the bolt load. This is a different method than measuring the elongation of the bolt to determine the applied force, but results in the same knowledge: knowing the bolt load. Because we use magnetoelastic technology, our sensors are more compact and less expensive than other strain measurement sensors.

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.

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