本规范涵盖了主要用于需要快速温度响应的设备的密封挥发性液体恒温开关的一般要求。本规范涵盖的开关的工作温度和工作温度范围符合规定（见3.1和6.1.2）。

This specification covers the general requirements for hermetically sealed volatile liquid thermostatic switches intended primarily for use in equipment requiring rapid temperature response. The operating temperatures and operating temperature ranges of switches covered by this specification are as specified (see 3.1 and 6.1.2).