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在进行负压测量时,需要有高精度的仪表。苏联乌克兰科学院地球工程力学研究所与加里水文仪表试验厂共同研制出一种M—75型自记式微压计,可连续测量矿井负压并记录矿内大气压力的相对变化。M—75型自记式微压计是以配备弹簧补偿器的测量系统和连续记录大气压力变化的直接换算法为基础的。图1为结构示意图。弹性感应元件1(由两个无液气压膜盒组成),用弹簧
In the negative pressure measurement, the need for high-precision instruments. Soviet Union Ukrainian Academy of Sciences Institute of Geotechnical Engineering and the Gary Hydrometer Test Factory jointly developed a M-75-type self-recorded micro-pressure gauge can continuously measure the mine negative pressure and record the relative changes in atmospheric pressure in the mine. The M-75 Self-Marking Micrometer is based on a measuring system with a spring compensator and a direct conversion algorithm that continuously records changes in atmospheric pressure. Figure 1 is a schematic diagram of the structure. Elastic sensing element 1 (composed of two non-liquid pressure capsule), with a spring