In electronic systems of modern machine tool, the control way of circuits of keeping pressure is able to be completed by the relay - toucher and the PLC.
在现代机床电气系统中，保压回路的控制方式可以通过继电器——接触器控制和可编程控制器PLC实现。
The 87 Series Ratio Relay Volume Boosters are used to amplify pressure or for remote pressure control - perfect for cylinder actuation or clutch and brake control.
在87系列增压器体积比继电器用于放大压力或远程压力控制-气缸驱动或离合器和制动器控制完善。
It can control the stepper motor to change the pressure of the relay, and the A/D circuit samples the signal of the pressure sensor and then acquires the lock or alarm value after processing.
该校验仪通过步进电机对密度继电器压力进行调节，并通过模数转换电路采集压力传感器的输出，实现对密度继电器报警及闭锁压力的测量。
The authors introduce the troubles inspection methods of the manual control switch, speed control switch, gas-pressure control switch and relay box of electromagnetic retarders used in Yutong coaches.
介绍宇通客车电涡流缓速器手控开关、速度控制开关、气压控制开关、继电器盒等故障的检测方法。
The mounted location of high-pressure safty valve and the connecting position of the control air pipe of air pressure relay of JZ-7 brake system are analysed.
对重联机车中JZ 7型制动机系统的高压安全阀的安装位置及打风压力继电器（调压器）控制风管的连接位置进行了分析、讨论，指出了现有机车中设计、制造上存在的缺陷，并在实际运用中进行了改造。
The mounted location of high-pressure safty valve and the connecting position of the control air pipe of air pressure relay of JZ-7 brake system are analysed.
对重联机车中JZ 7型制动机系统的高压安全阀的安装位置及打风压力继电器（调压器）控制风管的连接位置进行了分析、讨论，指出了现有机车中设计、制造上存在的缺陷，并在实际运用中进行了改造。
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