pressure meter switch

基本解释

The quick trunk injector comprises a reservoir pressure-meter, a spring balance, a transfusion pipe, a liquid valve, an air pinhead and a switch.
快速树干注射器主要由贮液瓶、压力表、弹簧秤、输液管、注药口、气门嘴、注射针头、开关等几部分组成。
Button-meter located 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.
纽扣式仪表设上下限二位开关接点装置，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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