Evaluation of sensor error of electronic universal test machine

Electronic universal testing machineThe performance indicators of sensors mainly include linear error, hysteresis error, repeatability error, creep, zero point temperature characteristics and sensitivity temperature characteristics.
Consider the influence of strategic acceleration and air buoyancy on conversion at the location of use. The advantages of the electronic universal testing machine tension sensor are high accuracy, long life, wide measurement range, good frequency response characteristics, simple structure, able to work under harsh conditions, easy to achieve miniaturization, integration and variety diversification. Its disadvantage is that it has a large nonlinearity for large strains and a weak output signal, but certain compensation measures can be taken. Therefore, it is widely used in automatic testing and control technologies.
The tensile sensor of the electronic universal test machine is based on the principle: the elastic body (elastic element, sensitive beam) produces elastic deformation under the action of external force, so that the resistance strain gauge stuck on its surface also produces deformation. After the resistance strain gauge is deformed, its resistance value will change (increase or decrease), and then the resistance change is converted into an electrical signal (voltage or current) through the corresponding measurement circuit, thus completing the process of converting external force into an electrical signal.http://www.hssdtest.com/