Study of Temperature States Influence on the Accuracy of Large Size Measuring Devices
LI Ting1,2,LI Jian-shuang2,MIAO Dong-Jing2,LI Lian-Fu2,LIU Xue-de2,3
1. Hunan Institute of Metrology and Test,Hunan, Changsha 410007, China
2. National Institute of Metrology,Beijing 100029, China
3. Tianjin University,Tianjin 300072,China
Abstract：Large-scale measuring device has a wide measuring range, the measurement accuracy of the device is affected by many factors, among them, the change of the environmental conditions of the large size measuring device will affect its measurement accuracy. Based on the indoor 80m length standard device of National Institute of Metrology, China, the measurement accuracy experiment of 10m, 30m, 70m in the air conditioning temperature control state and natural temperature state (not controlled temperature) were designed to study, the refractive index compensation errors in the air-conditioning temperature control state were 7.0μm, 10.5μm, and 21.0μm, and the refractive index compensation errors in the natural temperature state were 2.5μm, 2.9μm, and 3.9μm respectively. The experimental results show that the large-scale measuring device can obtain higher measurement accuracy under natural conditions, and when the measuring range is greater than 30m, the measurement accuracy can be better than 10-7 magnitude.
李婷,李建双,缪东晶,李连福,刘学德. 温度条件对大尺寸测量装置精度影响的研究[J]. 计量学报, 2019, 40(6): 975-979.
LI Ting,LI Jian-shuang,MIAO Dong-Jing,LI Lian-Fu,LIU Xue-de. Study of Temperature States Influence on the Accuracy of Large Size Measuring Devices. Acta Metrologica Sinica, 2019, 40(6): 975-979.
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2019, Vol. 40 
