智能便携式多功能液压控制阀故障诊断测试仪

目前市场上常用品牌的液压控制阀有REXROTH、MOOG、PARK等品牌，早期的液压控制阀不管是普通换向阀还是比例阀，电气控制多数采用外置专用放大板通过赫斯曼接头连接；后期的比例和伺服阀多数采用内置放大板，电气控制多数4-20ma、0-±10v、0-±10ma和0-10v通过7芯的航空插头来控制，这样PLC可以直接控制液压比例、伺服阀，省去了中间放大板，减少了故障点；本仪器既可以输出外置专用放大板的0-2A脉宽调制电流，又可输出4-20ma、0-±10v、0-±10ma和0-10v的信号，同时又能采集液压比例、伺服阀的阀芯位移信号以及同步采集液压控制阀输出油口压力；本仪器采用7寸触摸屏，全中文显示，使用者需按照内置说明书操作，即可对待检测的液压控制阀进行性能测试。

The widely applied world brands hydraulic control valves are REXROTH, MOOG, PARK and other international famous brands in the market presently . The early hydraulic control valves, ordinary directional control valve or proportional valve, an internal build-in amplify board was adopted and the electrical control signal is 4-20ma / 0-±10v / 0-±10ma / 0-10v to connect with the PLC through 7-core aviation plug, such the PLC can control the proportional valves or servo valves directly to reduce the cause of failure and eliminate the media amplify board.  

this new designed intelligent fault diagnosis tester can not only output 0-2A PWM current of the external special amplify board, but also output the 4-20ma、0-±10v、0-±10ma and 0-10v signal, and at same time collect the hydraulic proportion, displacement signal of servo valve core and oil pressure of hydraulic control valve output port synchronously. 7” touch screen is adopted to enable the user operates the testing procedure of hydraulic control valve according to the built-in instruction manual intuitively.

            一、功能介绍：

1、在线判断液压控制阀设备故障；在现代化的生产线包含有液压控制阀的设备一旦出现故障，普通员工很难判断是机械故障、液压故障还是电气控制故障；该仪器可解决上述问题，一步，断开与液压控制阀相连的电气插头，把本仪器配套的插头插上，二步，将压力传感器的两根测压线连接到液压控制阀的A、B口测压点上，三步，打开本仪器电源，选择与液压控制阀相对应的信号，手动测试即可判断是机械故障、液压故障还是电气控制故障；如下图：

In modern production line, it’s difficult for normal operator to test and tell whether the fault of equipment stop working is caused by hydraulic, mechanical or electrical control problem especially the numerous hydraulic control valves are applied. But with this new designed intelligent hydraulic tester, it will become an easy job instead. Only 3 steps will resolve that tiresome hard job easily. 

Step 1- disconnect the electrical plug from hydraulic control valve then connect the plugs of tester on. 
Step 2- connect the two pressure measuring wires of pressure sensor to A and B pressure measuring points of hydraulic control valve. 
Sep 3- Start the power of tester and select the proper signal correspond to the hydraulic control valve mode. The fault of mechanical, hydraulic or electrical control will be determined by manual testing.

2、离线测试液压控制阀的性能；手动测试正常后可进入自动测试，本仪器将自动输出所需信号，同时采集阀芯的位移信号及液压控制阀的A、B口的压力，并以曲线的形式反映在画面上；如下图

Off-line test the performance of hydraulic control valve 
If manual testing is normal, automatic testing will follow up. This intelligent tester may output the necessary signal automatically and collect the displacement signal of valve core and oil pressure of A & B points of hydraulic control valve as well to display the result in form of curve on screen. 

二、测试仪的组成：测试仪本体、配套充电器、带内置放大板的液压控制阀测试电缆、不带内置放大板的液压控制阀测试电缆和检测液压控制阀输出油口压力的两个压力传感器；如下图：

Tester main machine, charger, testing cable of hydraulic control valve with built-in amplify board, testing cable of hydraulic control valve without built-in amplify board, 
two pressure sensors of testing the A&B points oil pressure of hydraulic control valve. 

三、特点：
1、本仪器自带24v3000ma/h可充锂电池组，带充电和过流保护电路，同时配备限压25.2v的恒流充电器，电量不足时仪器本身反应特慢，而且在启动画面有电量不足提示，确保使用者的安全方便。

A 24v 3000ma/h rechargeable lithium battery pack is supplied, with charging and over-current protection circuit, equipped with voltage limitation of 25.2v constant current charger. The tester will react slowly if electricity is shortage and alarm the user.

2、信号采取智能切换，大输出20ma恒流的方式，即使负载短路都不会损坏本仪器，智能切换和参数设定见下图：

The signal is switched intelligently, the max output current is 20ma constantly. The tester won’t be damaged even if the load is short circuit.

3、采用先进的触摸屏技术，全中文显示且内置说明书，操控性、可视性好，通俗易懂。

Advanced touch screen technology is applied, easy to operate with built-in instruction manual, good visibility, easy to understand.
4、外壳采用铝合金型材，散热好，抗干扰好。

The tester body is made of aluminum profile, good heat dissipation and strong anti-interference ability.

            5、输出接口全部采用防水航空插头，耐油防水。

            All output interfaces are waterproof and oil resistance aviation plugs.

            四、仪器内部组成框图：