GB/T 18604-2001用气体超声流量计测量天然气流量.pdf

ICS75.180.30 E 98 臀}\IIi 中 华 人 民 共 和 国 国 家 标 准 Gs/T18604-2001 用气体超声流量计测量天然气流量 Measurementofnaturalgasflowbyultrasonicflowmeter 2001一12一30发布 2002一08一01实施 人 民 共 和 国 发 布 量 监 督检 验 检 疫 总 局 cB/T18604一~2001 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 ································