The main component of a load cell is the measuring element. This is a metal body that has been mechanically processed in such a way that it deforms as intended when a force is applied. The strain gauges are glued on at the points with the greatest deformation. By stretching or compressing the metal body, the strain gauges change their electrical resistance. These signals are passed on to strain gage amplifiers and evaluated.
Depending on the structure of the load cell, various add-on parts can be added to the measuring element, such as covers or sleeves to protect the strain gauge application surfaces on or in the force sensor.