钢弦式感应元件在应力测试中已得到广泛地应用,在煤矿建井工程量测中的应用也很普遍,特别是在冻结井壁和钻井井壁内外应力的研究中,钢弦频率仪已是常用的仪表。其主要原理是通过钢弦式压力传感器将井壁所受的压力值转换成频率,用四个数码管显示频率值。 The steel wire sensing element has been widely used in stress testing, and its application in coal mine shaft construction engineering measurement is also very common. Especially in the research of internal and external stress of frozen shaft wall and drilling shaft wall, Is a commonly used instrument. The main principle is through the steel wire pressure sensor will be subjected to the borehole pressure values ​​into frequency, with four digital display frequency.