超声波井径仪,是为适应我国岩盐水采生产的需要,由四川省五通桥盐厂和重庆大学无线电系于1981年共同研制成功的。该仪器由井下测量仪器和地面显示器组成。井下测量仪器外接六蕊(或七蕊)电缆,用电缆车放入井下溶腔(或硐穴)执行测量任务;地面显示器安装在仪器车内,用七蕊电缆与电缆车接口(图1)。它可以测出每口卤井各个高度的水平断 Ultrasonic caliper, is to meet the needs of rock salt water production in China, from Sichuan Wutongqiao Salt Factory and Chongqing University Department of Radio jointly developed in 1981. The instrument consists of downhole measuring instruments and ground monitors. Downhole measuring instrument external six core (or seven core) cable, cable car into the underground cavity (or cave) to perform measurement tasks; ground monitor installed in the instrument car, with seven core cable and cable car interface (Figure 1) . It can measure the level of each level of brine cut off each well