closed pressure gauge的意思|示意

Using the central control system PLC, intelligent temperature controller and pressure gauge to replace the three pen recorder to realize the closed loop circulation and record of outer temperature.

采用中央控制PLC、智能温控器及压力仪表等替代原进口三针记录仪，实现外温的闭环控制和记录；

The mechanical throttle valve is electrically controlled, e. g. the valve position is under closed-loop control to the output of the pressure gauge.

所述机械节流阀受到电控制，例如阀门位置受到根据所述压力表的输出进行的闭环控制。