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中国计量科学研究院新研制成一台NIM-Ⅲ号小型可移式高精确度绝对重力仪。本文介绍其在精确测时、防大地微震、高真空获取及高真空运输等方面采取的措施。该仪器测量重力加速度的精确度达到±10×10~(-8)m/s~2。
China Institute of Metrology newly developed a NIM-III small portable high-precision absolute gravimeter. This article describes its measures in precision measurement, anti-earth microseismic, high vacuum access and high vacuum transport. The accuracy of the instrument to measure the acceleration of gravity reaches ± 10 × 10 ~ (-8) m / s ~ 2.