GB/T 18660-2002 in English

《GB/T 18660-2002封闭管道中导电液体流量的测量 电磁流量计的使用方法》由TC124（全国工业过程测量控制和自动化标准化技术委员会）归口，TC124SC1（全国工业过程测量控制和自动化标准化技术委员会温度、流量、机械量、物位、显示仪表、执行器和结构装置分会）执行，主管部门为中国机械工业联合会。
本标准描述了用于测量充满封闭管道中导电液体流量的工业电磁流量计的原理和主要设计特点，并涉及它们的安装、运行、特性以及校准。本标准不规定流量计在危险环境中应用的安全防护要求。它不适用于导磁性浆液及液态金属的测量，也不适用于有卫生要求的场合。本标准包括交流励磁型和脉冲直流励磁型两种流量计。

Scope

This standard describes the principle and main design features of industrial electromagnetic flowmeters for measuring the flow of conductive liquids filled in closed pipes, and deals with their installation, operation, characteristics and calibration. This standard does not specify the safety protection requirements for flowmeters used in hazardous environments. It is not suitable for the measurement of magnetic slurry and liquid metal, nor for occasions with hygienic requirements. This standard includes two types of flowmeters, AC excitation type and pulsed DC excitation type.