Many customers often encounter many misunderstandings when purchasing materials torsion testing machines. The technical engineers have sorted out a series of problems in the torsion testing machine, hoping to help the users. Range selection According to the maximum load of the test material, the maximum load (ie range) of the test machine is selected. The recommended material test load is preferably about 70%-90% of the test machine range, which ensures the resolution of the test and the test machine. Service life 2. Precision level selection At present, the accuracy of domestic testing machines is generally used in both grade 1 and grade 0.5. For general material testing, it is sufficient to select a level 1 testing machine. There is no need to spend more money to improve the accuracy. For scientific research and material analysis, 0.5 level precision is required. Test machine; In fact, the technical difference between the 0.5 and 1 precision test machines is not obvious. The method and means of verification are basically the same. This is the difference of the correction points. With the development of sensor technology, the sensor The linearity of the component has reached a very high level. As long as the measurement circuit has no defects and the anti-interference performance is good, all the test machines will have a precision of 0.5, which is no problem. For the electrical measurement, it has far exceeded the 0.5 level. Limit, the relative error defined by the national standard; 3. Resolution and dynamic performance (bandwidth) selection Resolution is an important parameter of the testing machine. The appropriate resolution will be beneficial to the resolution of the measurement. The smaller index is measured. The effective resolution and dynamic performance are contradictory. The effective resolution is sacrificed. At the cost of dynamic performance (bandwidth), the direct result of the reduction in bandwidth is that the material yield fluctuation is not obvious or even yielding is a platform phenomenon, so the selection of parameters should be considered effectively in the selection; SINOCHEM PHARMACEUTICAL CO., LTD , https://www.sinochemnutrition.com