BS EN 12178:2016规定了安全要求、安全系数、试验方法、试验压力和压力 本标准通篇称为“液位指示器”的液位指示装置的使用标记 在制冷系统和热泵中。它适用于与制冷剂容器连接的装置（例如高压液体接收器、中冷器和压缩机上的装置） 低压接收器）和与制冷系统其他部件（如油位指示器）相连的装置 压缩机上的眼镜）。本欧洲标准适用于直接和间接读数装置的液位指示器类型 （例如观察镜、结霜管），包括电气和气动指示器。本欧洲标准描述了设计（通过计算或 试验设计方法）液位指示器零件承受压力，以及使用的标准 材料的选择。本欧洲标准适用于压力控制和安全壳液位指示器的设计 描述了在试验中考虑低温下降低的冲击值的方法 安全的举止。它还提供了一些应用和安装方面的指导。交叉引用:EN 378-1EN 378-2EN 378-4EN 764-1EN 12284:2003EN 60529IEC 60529EN 764-4EN 764-5EN ISO 6708:1995ISO 6708:1995ISO 7268购买本文件时提供的所有当前修订版均包括在内。

BS EN 12178:2016 specifies safety requirements, safety factors, test methods, test pressures and marking of liquid level indicating devices, referred to throughout this standard as "level indicators", for use in refrigerating systems and heat pumps.It applies to devices connected to refrigerant vessels (e.g. on high-pressure liquid receivers, intercoolers and low-pressure receivers) and to devices connected to other parts of a refrigerating system (e.g. oil-level sight glasses on a compressor).This European Standard applies to those types of level indicators that are direct and indirect reading devices (e.g. sight glasses, frosting tubes), and includes electrical and pneumatic indicators.This European Standard describes the procedure to be followed when designing (by calculation or by an experimental design method) level indicator parts subjected to pressure as well as the criteria to be used for the selection of materials.This European Standard applies to the design of level indicators with respect to pressure containment and describes methods by which the reduced impact values at lower temperatures may be taken into account in a safe manner.It also gives guidance on some aspects of application and installation.Cross References:EN 378-1EN 378-2EN 378-4EN 764-1EN 12284:2003EN 60529IEC 60529EN 764-4EN 764-5EN ISO 6708:1995ISO 6708:1995ISO 7268All current amendments available at time of purchase are included with the purchase of this document.