一、用途与特点在建筑、航空、机械、造船等工业的生产科研以及铁路、桥梁等工程中,需要测量材料或结构的应力应变量,以探索其在荷载作用下的应变规律。我所于1983年研制成功SZ-240自动巡回测试系统,满足了多点、快速、自动测试应力应变的迫切需要。 SZ-240系统具有240个测点连续自动测试的功能,并可按程序作自动循环检测及定时巡回测量。测量精度较高,能辨别0.1με(微应变),测量范围为±10000με,由于 First, use and characteristics In the construction, aviation, machinery, shipbuilding and other industries of production research and railways, bridges and other projects, the need to measure the stress strain of the material or structure in order to explore the strain law under the load. In 1983, we successfully developed the SZ-240 automatic touring test system, which satisfies the urgent need for multi-point, rapid, and automatic stress and strain testing. The SZ-240 system has the function of continuous automatic testing of 240 measuring points, and can be used for automatic cycle detection and periodic tour measurement according to the program. High measurement accuracy, able to distinguish 0.1με (micro strain), measuring range ± 10000με, due to