- In-house engineering and production
- Short lead times
- Worldwide delivery
- More than 20 years of experience
Why choose a BoltSafe sensor instead of a strain gauge load cell?
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With a BoltSafe sensor, the bolt load is measured across the entire surface of the ring instead of using just a few pressure points.
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Because we handle the calibration inside the sensor, no calibration is needed at the side of the readout equipment. Even when you’re switching between readout methods, this is not necessary.
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Our bolt load sensors are able to handle very low and very high loads from 18 kN to 3000 kN. This results in a lower chance of overloading than when using a strain gauge load cell.
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Our load cells send out only digital signals, which can be converted to an industrial standard when using some of our readout methods.
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BoltSafe sensors are drift free and have almost no creep effect. After factory calibration, a maximum deviation of 1% of the full scale is assured.
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The load cells are dust free and water resistant because they meet the IP66 rating.
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Our product range offers different types of readout methods to accommodate various wishes, situations and applications.
Bolt load cells
BoltSafe bolt load sensors 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.
Bolt load cells
BoltSafe bolt load sensors 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.
What is a strain gauge load cell?
A strain gauge load cell (also known as strain gauge, strain gage or strain gauge sensor) is a sensor which is used to measure strain on an object. It converts force into a change in electrical resistance, which then can be measured by the load cell. This happens because the metallic foil on the back of the strain gauge load cell will deform when it is attached to an object by an adhesive. The quantity known as the gauge factor relates the change in resistance to the strain. Applying external forces to a stationary object results in stress and strain, causing the resistance to vary by the applied force. Because there are different kinds of strain (tensile and compressive), strain gauge sensors can be used to pick up both expansion and contraction. Edward E. Simmons and Arthur C. Ruge invented the strain gauges in 1938.
Contact us for more information or to order our load cells
BoltSafe as an alternative to strain gauge load cells
The strain gauge technology is the most commonly used technology for measuring load in the market, but BoltSafe sensors use a different technology. Contrary to strain gauge load cells, our sensors use magnetoelastic technology, which means they measure the changes in the magnetic field. Because of this, the BoltSafe sensors have a low clearance and are thus more compact. They are also less expensive than comparable sensors. Our load cells are specially designed for measuring and monitoring the bolt load in bolted joints. With this information, safety is enhanced, joints are more dependable and better control over the bolted construction is assured.
BoltSafe load cells are used as washers and are placed on the non-driven side of a bolted connection, preferably under a nut. When the bolt is being tightened, minor deformations on the washer occur because of the applied force. These deformations cause changes in the electrical resistance, which are then measured by our sensor. This is the main difference with the technology of the strain gauge load cells. We use this acquired data to determine the bolt load at any given moment.
Are you interested in using or distributing our bolt load cells? 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.