Assessment of uncertainty in calibration of a gas mass flowmeter

被引：5

作者：

Kruh, D ^{[1
]}

机构：

[1] RAFAEL, Calibrat Labs, IL-31021 Haifa, Israel

来源：

ACCREDITATION AND QUALITY ASSURANCE | 2000年 / 5卷 / 07期

关键词：

volumetric gas flow rate; mass flowmeter; calibration; uncertainty;

D O I：

10.1007/s007690000154

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A primary calibration system was set up in Rafael some years ago, based on volumetric flow rate. The primary standard measures volumetric flow by means of the volume change of a dual piston over a specific time interval. This system serves to calibrate secondary standards of the thermal mass flowmeter type. Calibration procedures were prepared and validated. The paper describes the tests and calibration procedure conducted for the uncertainty assessment, the different components contributing to the measurement uncertainties, and the formulas involved with volumetric flow fates and with thermal mass flowmeters.

引用

页码：280 / 284

页数：5