This device can transmit signal and control through the medium of compressed gas, and can adjust testing pressure, flow rate and time according to the automatic controlling requirement.

该装置以压缩空气为介质进行信号传递和控制，并能根据需要调节检漏压力、流量和时间。

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Instruments based on the lower limit of two switch-contact device, the pressure to set a signal or when the value of on-off control circuit for the operating system's automatic control or the use.

仪表设上、下限二位开关型接点装置，在压力达到设定值时发出信号或通断控制电路，供作业系统自动控制或发讯用。

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Different points of the same type, but the difference between the subsidiary device and the automatic control, the part of the structure of the high pressure foaming machine is the same as the same.

同一类型的不同点，只是其附属的设备与自动化控制的方面的差异，聚氨酯高压发泡机部分结构大体的都是相同的。

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