PG7607基准级活塞压力计零级有效面积的确定  

Determination of the Initial Effective Area of the PG7607 Primary Standard Piston Pressure Gauge

作　　者：李建英[1] 贺晓雷[1] 于贺军[1] 王有利[1] 

机构地区：[1]中国气象局气象探测中心,北京100081

出　　处：《气象》2011年第9期1173-1177,共5页Meteorological Monthly

基　　金：气候观测综合计量检定技术研究(GYHY200706003)资助

摘　　要：对于活塞压力计,零级有效面积是其最重要的参量。利用作为压力基准级活塞压力计活塞-活塞筒几何尺寸的测量结果,用几何法计算活塞压力计的零级有效面积和不确定度,活塞压力计零级有效面积计算结果为1961.0276 mm^2,其扩展不确定度为4.3 ppm(k=2,1 ppm=10^(-6));用压力平衡法获得活塞零级有效面积的结果为1961.0279 mm^2,其扩展不确定度计算结果为1 5 ppm(k=2);用几何法获取活塞零级有效面积的不确定度最小,活塞零级有效面积为1961.0276 mm^2。The initial effective area is the most important parameter to a piston pressure gauge.The initial effective area and uncertainty of the piston pressure gauge are calculated with a dimensional method,by aid of the dimensional measurement results of the piston and cylinder of the primary piston pressure gauge. The calculation result of the initial effective area of the piston pressure gauge is 1961.0276 mm^2,with an extended uncertainty of 4.3 ppm（k= 2,1 ppm=10^-5）;The initial effective area of the piston obtained with a pressure balance method is 1962.0279 mm^2,with an extended uncertainty of 15 ppm（k = 2）. Therefore,the uncertainty of the piston effective area obtained with the dimensional method is the smallest, and the piston initial effective area is 1961.0276 mm^2.

关 键 词：PG7607活塞压力计 零级有效面积 零级有效面积不确定度 

分 类 号：TH812.4[机械工程—仪器科学与技术]