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。
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.
利用反射式光电开关的电路的通断来控制报警电路，有灵敏度高、隐蔽性好的特点。
The paper provides us with the idea of using photoelectricity reflective on-off switch to control alarm circuit with the characteristics of high sensitivity and favourable concealment.
固态开关部件采用电力MOSFET做软开关，使得电路通断时，不会出现打火花的现象。
The solid state switch device uses power MOSFET as soft switch, so, the spark doesn't appear when the circuit turn on or turn off.
如果再串联一个氖管则在夜间亦能方便地判断开关的通断状态，同时还可判明电路中是否有电。
If a neon tube is connected with the utility model in series, the on-off state can be conveniently judged at night, and simultaneously, the existence of an electricity can be judged in the circuit.
本发明方案采用全电子软开关接通和关断，所以使用寿命长，消磁电路在通断时没有声音。
The present invention adopts a fully electrical soft switch to conduct and switch off, thereby, the service life is long, and the degaussing circuit has no sound when being switched off.
本发明方案采用全电子软开关接通和关断，所以使用寿命长，消磁电路在通断时没有声音。
The present invention adopts a fully electrical soft switch to conduct and switch off, thereby, the service life is long, and the degaussing circuit has no sound when being switched off.
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