摘要
研制的液氧密度标准计量装置主要由液氧容器、专用恒温器、测控系统、质量测量系统、PC机组成.分析和评定了温度测量不准确度,考核了液氧密度计量装置的性能.液氧密度标准计量装置在温度90～100 K、压力0.1～0.6 MPa条件下,其扩展不确定度(K=3)沸点条件下不大于0.3kg/m3,沸点之外不大于0.5 kg/m3.
A standard measurement equipment for liquid oxygen density is developed.The equipment consists of liquid oxyen container,cryostat,measurement and control system,mass measurement system and PC mainly.The measurement inaccuracy of temperature has been analyzed and evaluated.The performance of the equipment has been tested.At 90~100 K and 0 1~0 6 MPa,the extend inaccuracy of the equipment(K=3) is not larger than 0 3 kg/m 3 under the condition of boiling point,not larger than 0 5 kg/m 3 besides boiling point.
出处
《低温工程》
CAS
CSCD
北大核心
2005年第1期11-16,共6页
Cryogenics
