并联式标准表法气体流量检定装置的设计  

Design of Gas Flow Verification Device with Parallel Master Meters

作　　者：刘丁发[1] 徐志鹏[1] 王凯于 陈赏顺 

机构地区：[1]中国计量学院计量测试工程学院,杭州310018 [2]浙江省嘉兴市计量检定测试所,浙江嘉兴314001 [3]浙江省计量科学研究院,杭州310013

出　　处：《计算机测量与控制》2014年第3期923-925,929,共4页Computer Measurement &Control

基　　金：国家自然科学基金(11002137;51305419);国家质检总局科技计划项目(2009QK029);流体动力与机电系统国家重点实验室开放基金(GZKF-201209)

摘　　要：为提高气体流量计检定效率、扩大流量检定范围,提出了一种并联标准表法气体流量检定装置;装置采用2台DN50和2台DN150罗茨流量计作为标准表,能提供0.5~2000m^3/h的标准气体流量,实现多种流量计的快速检定;简述了装置的总体设计方案,详细分析了检定装置的流量计算模型,介绍了上位机检定程序和下位机电控系统,总结了流量调节实验;实际使用表明,该检定装置操作界面友好,检定过程简便高效,流量调节时间少于90s,调节误差1.5%以下,检定数据准确可靠。In order to improve the verification efficiency of gas flowmeters and expand the calibration flow scope, a gas flow automatic verification device with parallel master meters is proposed. Two DNS0 and two DN150 Roots flowmeters used as master meters, the device is able to provide 0. 5~2000m3/h master gas flow and calibrate different type flowmeters quickly. Sketched the overall design scheme of the de- vice, analyzed the gas flow calculation model in detail, introduced upper computer calibrating program and down computer electronic control system, summarized flow regulate experiments. The practical application shows that the verification device has great promotional value and the operational interface is friendly, calibration process is simple and efficient, flow regulating time is less than 90 seconds and error is under 1.5 ~, calibration data is accurate and reliable.

关 键 词：气体流量检定装置 罗茨流量计 并联标准表法 

分 类 号：TB937[一般工业技术—计量学]