ICS17.120.01 A53DB4401 广州市地方标准 DB4401/T70—2020 代替DBJ440100/T251—2015 成品油流量计在线校准方法 Onlinecalibrationmethodforrefinedoilflowmeter 2020-06-08发布 2020-07-01实施 广州市市场监督管理局 发布 DB4401/T70—2020 I目  次 前言.....................................................................................................................................................................Ⅲ 1范围.................................................................................................................................................................1 2规范性引用文件.............................................................................................................................................1 3术语和定义.....................................................................................................................................................1 4计量性能要求.................................................................................................................................................2 4.1外观.........................................................................................................................................................2 4.2技术指标.................................................................................................................................................2 4.3流量计系数调整.....................................................................................................................................2 5校准条件.........................................................................................................................................................2 5.1环境条件.................................................................................................................................................2 5.2标准器及配套设备.................................................................................................................................2 5.3安全准备.................................................................................................................................................2 6校准项目及校准方法.....................................................................................................................................3 6.1校准项目.................................................................................................................................................3 6.2校准方法.................................................................................................................................................3 7校准结果表达.................................................................................................................................................5 8复校时间间隔.................................................................................................................................................6 附录A（规范性附录）流量计准确度等级及对应的允许误差...................................................................7 附录B（资料性附录）流量计仪表系数校准结果计算方法校准证书内页格式.......................................8 附录C（资料性附录）原始记录格式..........................................................................................................10 附录D（资料性附录）校准证书内页格式.................................................................................................11 附录E（资料性附录）测量结果不确定度分析实例.................................................................................12