Bridge measuring circuits in the strain gauge sensor configuration

In engineering sciences student education, electrical measurement of mechanical quantities can often be found. It is also widely used in engineering applications force measurements, particularly in machine tools. Load sensors, which are frequently used in mechanical engineering research, use strain gauges, bonded to a metal beam, to measure bidirectional force. The applied force induces extremely small changes in the resistance of strain gauges. In order to measure strain with a bonded resistance strain gauge, they must be connected to an electrical bridge measuring circuit. Strain gauge transducers usually employ four strain gauge elements, electrically connected to form a Wheatstone bridge circuit. The aim of this paper is to present the strain gauge conjunction with various measuring circuits, especially in Wheatstone bridge configuration. Also, the model for student education in the field of electrical measurement will be presented.