BoltSafe compression load cells are specifically designed for measuring and monitoring bolt load, but are also usable as a weighing device for other applications where load or compression needs to be measured. Examples of these applications are in temporary construction and for Structural Health Monitoring, where they monitor the load in the construction to make sure that the construction doesn’t collapse. BoltSafe products can be used both during assembly and over a longer period of time. Precisely knowing the bolt load enhances safety and control in bolted constructions and makes the joints more dependable.
When using a BoltSafe sensor for bolt load measuring, the compression load cell is used as a washer and placed on the non-driven side of a bolted connection, preferably under a nut. When the bolt is being tightened and force is being applied, minor deformations of the stainless steel washer occur. The changes in electrical resistance which are caused by these deformations can then be measured. This data is used to determine the bolt load very precisely at any chosen time. Our product range offers two types of compression load cells, the CMS sensor (for continuous monitoring) and PMS sensor (for periodic monitoring). Both are available in a regular version and a stronger version that can withstand 15% more load while the compact dimensions remain the same.