.7:1991 黏性烃类计量

[中文适用范围]： 本文适用于高粘度烃类计量用仪表及辅助设备的设计、安装、操作与验证，可作为相关指南。文中界定了高粘度烃类的概念，阐述了将其加热至高温时面临的困难，分析了高温对仪表、辅助设备及其连接件的影响，并提供了克服或缓解相关问题的建议与警示。 [外文原描述]： Serves as a guide for the design, installation, operation and proving of meters and auxiliary equipment used in metering viscous hydrocarbons. It defines viscous hydrocarbons and describes the difficulties that arise when viscous hydrocarbons are raised to high temperature. The effects of such temperatures on meters, auxiliary equipment, and fittings are discussed, and advice and warnings to overcome or mitigate difficulties are included.