论文部分内容阅读
我台原使用的备用磁变仪存在着两个较明显的问题:一是温度系数较大,K=3.8r/1℃。二是自1975年安装以来虽已有五年时间,但仍存在较大的单向滑动现象,年滑动量约50伽码。这些现象的存在,影响和降低了记录资料的质量。为此决定另行调试一台72型H磁变仪,期望温度系数K<1r/1℃(由于我台记录室大部份时期日温差小于0.3℃,而且是作为备用的仪器,故技术指标定得低)。同时,尽可能将滑动现象减少到最小程度,以求有较满
There are two obvious problems with the spare magnetic strain gauge that I used in Taitai: First, the temperature coefficient is larger, K = 3.8r / 1 ℃. Second, although it has been five years since its installation in 1975, there is still a large one-way slip phenomenon with an annual slip of about 50 gamma. The existence of these phenomena affects and reduces the quality of recorded data. To this end decided to debug another 72-type H magnetic strain gauge, the expected temperature coefficient K <1r / 1 ℃ (because most of my time recording room temperature difference less than 0.3 ℃, but also as a backup instrument, so the technical indicators set Low). At the same time, as much as possible to reduce the phenomenon of sliding to a minimum, in order to have a full