气体流量测定专用三吨电子天平的研制  

A Special 3-ton Electronic Balance for Gas Flow Measurement

作　　者：黄锦才[1,2] 罗镇伟[1,2] 赵宝瑞 李学铭 

机构地区：[1]中国测试技术研究院 [2]航天工业部第102研究所

出　　处：《计量学报》1998年第1期35-38,共4页Acta Metrologica Sinica

摘　　要：本文介绍为建立气体流量标准装置而研制的专用电子天平，其最大称量为３ｔ，读出能力为１ｇ，总不确定度不大于２ｇ。该天平的横梁为不等臂杠杆，采用由一把支点刀、一把重点刀和两把力点刀构成的四刀结构，支撑系统为具有四根大立柱的框架结构；这些都是独创性的。测量系统采用电磁平衡式传感器技术，将非电量（质量）转变为电量（电流）进行测量，并实现了数据处理的自动化。狝 special electronic balance is developed for setting up the standard device of gas flow. Its maximum weighting is 3t, the readability is 1g, and the total uncertainty is less than or equal to 2g. The beam of balance has two unequal arms. The four-knife structure of balance, which has one fulcrum-point knife,one gravity-point knife and two force-point knives, is out of the ordinary. The supporting system of this balance has four upright pillars, it is also not the same as others. The measuring system adopts the technique of electromagnetic balancing sensor,it changes the quantity mass into electric current, then engages in the measurement and processes the measuring results automatically.

关 键 词：气体流量 标准装置 电子天平 四刀结构 

分 类 号：TH814[机械工程—仪器科学与技术] TH715.116[机械工程—精密仪器及机械]