Working principle of single point load cell

  •   Working principle of single point load cell

      Like all other modern weighing transducers, a single-point load cell is essentially a sensor that converts force or weight into electrical signals. They do this by using strain gauges attached to the body of the load cell. Under load, the shape of the load cell will be slightly deformed. This change is detected by the strain gauge, which deforms in accordance with the body, which causes the voltage to change. This voltage signal is proportional to the initial force or weight, so it can be used to calculate it.


      The single point load cell has a variety of shapes and sizes to suit different types of applications. They all have an inner hole, which is a geometrically precise cut of the body. This is usually the visual difference between them and beams load cells. This hole controls the metal thickness at each point of the load cell body and is the key to the load cell's ability to adapt to eccentric loads.

      The single-point load cell is usually made of stainless steel or high-grade aluminum, the latter being most suitable for low-volume use. Depending on the degree of environmental protection required, they are available in potted or sealed versions, and some models provide ATEX certification and can be used in hazardous areas.