It can be placed in a selection of locations but it will always be found somewhere in the high pressure part of the circuit in between the compressor output and the thermal expansion valve.
它可以被安装在几个位置上，但这些位置仅限于线路的高压侧，且在压缩机输出端和热力膨胀阀之间。
Conversely, if the pressure in the high pressure part of the circuit drops significantly (to 1-2 bar), the same switch opens in the other direction, again opening the contacts.
反过来说，如果电路中高压端的压强下降幅度过大(到1 -2巴)，开关1会向反方向开启，并再次打开触点。
English Name:Cryogenic vessels - Safety devices for protection against excessive pressure - Part 1: Safety valves for cryogenic service;
简体中文标题：低温容器。过压保护用安全装置。第1部分：低温设施用安全阀。
English Name:Cryogenic vessels - Safety devices for protection against excessive pressure - Part 1: Safety valves for cryogenic service;
简体中文标题：低温容器。过压保护用安全装置。第1部分：低温设施用安全阀。
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