In the past English physicist Sir Charles Wheatstone devised a bridge circuit that could measure electrical resistances. The Wheatstone bridge circuit is ideal for measuring the resistance changes that occur in strain gages. Load cell is typically an electronic device which is used to convert a force into an electrical signal.

Everything can be weighed by mechanical scales from pills to railroad cars and can do so accurately and reliably if they are calibrated and maintained properly. The utilization of a weight balancing mechanism or the detection of the force can be involved in the method of operation developed by mechanical levers.

A load cell is an electrical device that forcibly converts one form of energy into another. Based on this principal the load cell weighing system converts weight into an electrical signal. A strain gage is the main device of load cell that changes resistance when it is stressed.

When a load is applied to a beam with stress, it causes shearing or bending. Beams installed are configured with single or double end. The strain gages consist of thin metallic coil and are bonded chemically to a thin dielectric layer. The performance of the Celmi load cell weighing system has left great impression within weighing scale system sector.