Weight cells are sensors that give an electric signal depending on the load subjected. The sensor measures the deformation of the material by means of strain gauges that change their resistance because they are integrated with the deformed metal.

The output signal corresponds to a puente extensiométrico and offers an output in mV proportionally to the load and supply.

There are different types of weight cells depending on shape and operation:

– Flexing load cells. With a parallelepiped shape, they detect the deformation when being exposed to some load in one of the ends. They are applied in small and medium loads.

-Células tipo fuelle. They are a specific flexing cell. They are applied in medium loads and are characterised by a core measurement protected by a stainless steel fuelle which is a great environmental protection being totally sealed IP 68.

-Shear cells. They are similar to flexing load cells and are applied in big loads. The difference is that the body is welded, being protected mechanically and environmentally.

– Double shear cells. The flex is produced in both ends of the cell, therefore, the load should be in the middle. They are used for very big loads like 100T.

-“S” type cell. They work either in traction and compression. It is a shear in an “S” shape material.

– Cylindrical load cell. The load is at the top of a vertical cylinder, where there is a pivot that receives force.

-Célula de carga de pibote autocentrante. A vertical cylinder receives the force between the two ends without being fixed.