用气体超声流量计测量天然气流量.pdf

ICS E 98 臀i }\ II 中华人民共和国国家标准 Gs/T 18604-2001 用气体超声流量计测量天然气流量 Measurement of natural gas flow by ultrasonic flow meter 2001一12一30发布 2002一08一01实施人民共和国量监督检验检疫总局发布 cB/T 18604一~2001 目次 pa舀·······································································································。··········??工 1范围···················································································..··························??1 2引用标准······,··································································································??1 3术语和符号······························································。·······································??1 4测量原理····················。····················································································??4 5工作条件··························································································。··············??4 6测量性能要求··························································································。···。····??5 7流量计要求。·····································································································??6 8安装要求及维护···················································。··················。···..·..·..·······..·...??9 9现场验证测试要求·····························································??,..···········.·..·..·....??10 10流量计算方法及测量不确定度估算······。····························,······??。·..·..·······..·..·.??11 附录A(标准的附录)出厂测试要求········································································??14 附录B(标准的附录)电子部件的检验测试·······························································??15 附录C(标准的附录夕实流校准···················································....·.....·..·............??16 附录D(提示的附录)具备的文件··········································································??22 附录E(提示的附录)上、下游直管段长度要求·········,·········································。·······??,23 附录F(提示的附录)基本原理··········································....·??。.·..·..·..·..·..·..·..??24 中华人民共和国国家标准用气体超声流量计测量天然气流量 GB/'r 18604-2001