Tilt experiment with the autograv relative gravimeter CG-5

Abstract

Scintrex Company Ltd. has built a very precise relative gravimeter AutoGrav CG-5 to explorer mineral, oil and GAS and to detect geotechnical events based on gravity measurements. All of these explorations are based on a glass-quartz spring, which are very sensitive to tilt, shake and temperature changes. Therefore, it is very essential to keep spring in a stable environment and avoiding of tilting and shaking it. In this investigation, the tilt behavior of glass-quartz spring of the CG-5 Scintrex relative gravimeter is tested. The main goal is to establish a relationship between duration of the tilt and offsets as function of time. Therefore, gravimeter is tilted by placing metal discs of different thickness and different times. The results show that CG5 gravimeter needs some hours to stabilize the glass quartz spring. The behavior of CG5 relative gravimeter and corresponding results will be presented.