Connect wire to pressure differential switch.

连线至差速压力开关。

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Pressure differential switch monitors the status of the filter, when the set point is exceeded, a signal will be given to switch on "filter clogged" indicating lamp on the computer.

压力微分开关对过滤器的状态进行监测，当超过设定值时，就会向开关发出一个“过滤器阻塞”的信号，在计算机上的指示灯就会发亮。

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Connect differential pressure switch wire to the combination valve.

连接差速压力开关线至组合阀。

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Differential tax rates on lead-free petrol have encouraged drivers to switch en masse to it.

ECONOMIST: British election briefing: Transport