Force transducer
Force transducers, also known as force sensors or load cells, are devices used to measure forces acting on an object. They detect both tensile and compressive forces by measuring the elastic deformation of a spring element. This deformation is converted into an electrical signal that is proportional to the applied force.
Strain gauges (SG)
A strain gauge consists of a thin wire or metal foil bonded to an elastic substrate, typically a metal surface. When the material is subjected to mechanical stress, it expands or contracts, causing changes in the length and cross-sectional area of the strain gauge. These physical changes result in a corresponding change in electrical resistance.
To accurately measure these very small resistance changes, strain gauges are commonly arranged in a Wheatstone bridge configuration. This circuit enables precise detection of minute resistance variations and converts them into a usable electrical signal.
Applications
Force transducers based on strain gauges are used in a wide range of applications. In mechanical engineering, they are employed to measure tensile and compressive forces. In the automotive industry, they are used to monitor loads and forces, while in lifting and handling applications such as cranes, they enable reliable monitoring of heavy loads.
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