微压力标准装置研制  

Design Development of Micro Pressure Standard Device

作　　者：李鑫武[1] LI Xinwu(Changcheng Institute of Metrology&Measurement,Beijing 100095,China)

机构地区：[1]航空工业北京长城计量测试技术研究所,北京100095

出　　处：《计测技术》2021年第2期178-182,共5页Metrology & Measurement Technology

基　　金：国家“十三五”技术基础科研项目(JSJL2015205A009)。

摘　　要：详细介绍了一种液体压力计微压标准装置的研制,采用超声波液位定位技术实现液位准确定位,并采用激光干涉技术实现了液柱高度准确测量,同时对温度控制、位移控制、数据采集处理等分系统设计进行介绍,最后对微压标准装置进行了测量不确定度分析和验证,该标准装置填补国防系统5 kPa以下微压量值传递空白,解决国防系统高准确度微压仪器仪表的溯源问题。This paper introduces in detail the development of a micro pressure standard device for liquid pressure gauge.Using ultrasonic liquid level positioning technology to realize accurate liquid level positioning.The height of liquid column is accurately measured by laser interference technology.At the same time,the temperature control,displacement control,data acquisition and processing subsystem design are introduced.Finally,the measurement uncertainty of the micro pressure standard device is analyzed and verified.The standard device fills the gap of below 5kPa micro pressure value transmission in national defense system,and solves the traceability problem of high accuracy micro pressure instruments in national defense system.

关 键 词：微压力 校准 压力标准装置 液体压力计 

分 类 号：TB935[一般工业技术—计量学]