ICS 91.140.60 CCS N 12 中国计量协会 团体标准 T/CMA SB 054―2020 NB-IoT 水表 NB-IoT water meter 2020-11-30发布 2021-04-01实施 中国计量协会 发布 CMA 全国团体标准信息平台 全国团体标准信息平台 T/CMA SB 054―2020 I 目 录 前言 ............................................................................... III 1 范围 ............................................................................... 1 2 规范性引用文件 ..................................................................... 1 3 术语和定义 ......................................................................... 1 4 分类和型号 ......................................................................... 1 4.1 分类 ........................................................................... 1 4.2 型号 ........................................................................... 2 5 型式要求 ........................................................................... 2 5.1 使用环境 ....................................................................... 2 5.2 外观 ........................................................................... 2 5.3 材料和结构 ..................................................................... 2 5.4 规格 ........................................................................... 2 5.5 安装尺寸 ....................................................................... 2 5.6 数据显示（指示装置） ........................................................... 2 5.7 按键 ........................................................................... 2 5.8 电气接口 ....................................................................... 2 5.9 电源 ........................................................................... 3 5.10 外壳防护 ...................................................................... 3 5.11 防护装置（机械 /电子封印） ..................................................... 3 5.12 标记与铭牌 .................................................................... 3 6 性能要求 ........................................................................... 3 6.1静压要求 ........................................................................ 3 6.2 计量性能 ....................................................................... 3 6.3 通信性能 ....................................................................... 4 6.4 影响量 ......................................................................... 4 7 功能要求 ........................................................................... 4 7.1 数据非正常中断保护 ............................................................. 4 7.2 数据存储 ....................................................................... 4 7.3 数据显示 ....................................................................... 4 7.4 系统信息交互 ................................................................... 4 7.5 数据安全 ....................................................................... 5 7.6 数据传输 ....................................................................... 5 7.7 报警 ........................................................................... 5 7.8 维护测试 ....................................................................... 5 8 试验方法 ........................................................................... 5 8.1外观检查 ........................................................................ 5 8.2 其他型式要求检查（或检验） ..................................................... 5 全国团体标准信息平台 T/CMA SB 054-2020 II 8.3 外壳防护试验 ................................................................... 5 8.4 静压试验 ....................................................................... 5 8.5 计量性能试验 ................................................................... 5 8.6 压力损失试验 ................................................................... 5 8.7 重复性试验 ..................................................................... 6 8.8 过载水温试验 ................................................................... 6 8.9 耐久性试验 ..................................................................... 6 8.10 机电转换误差试验 .........................