CJ/T 477-2015 in English

本标准规定了超声波燃气表的术语和定义、符号，工作条件，计量特性，结构和材料，指示装置，通信，电源，电磁干扰，其他功能，试验方法，检验规则，标志、包装、运输和贮存。
本标准适用于最大工作压力不超过50kPa、最大流量不超过160m3/h、适应最小工作环境温度范围为 -10℃～+40℃、双管接头的、采用超声波检测技术进行气体流量计量的全电子式燃气表的设计、生产、试验和验收。

Scope

This standard specifies the terms and definitions, symbols, working conditions, measurement characteristics, structure and materials, indicating devices, communications, power supply, electromagnetic interference, other functions, test methods, inspection rules, and signs of ultrasonic gas meters (hereinafter referred to as gas meters). , packaging, transportation and storage. This standard is applicable to gas flow measurement systems with a maximum working pressure not exceeding 50 kPa, a maximum flow rate not exceeding 160 m/h, a minimum working environment temperature range of -10 ℃ ~ + 40 ℃, double pipe joints, and ultrasonic detection technology. Design, production, testing and acceptance of fully electronic gas meters.