How to deal with the failure of the automatic instrument of the hydrogenation high pressure reactor

The method of fault diagnosis for the automation instrument of hydrogenation high-pressure reactor: 1 The automation instrument of hydrogenation high-pressure reactor refers to the instrument and equipment which is composed of sensor elements and has the function of measurement and display, usually composed of sensor, transmitter and display Because of its simple operation, high degree and clarity, it is widely used in many industries It can be divided into flow meter, pressure meter, temperature meter, material meter and so on 2 In the process of using the hydrogenation reactor, the automatic instrument may have various faults In order to recover to normal as soon as possible and reduce the loss, Weihai Zhenhong Chemical Machinery Co., Ltd reminds you to master several basic fault judgment methods (1) visual inspection: check the dial, shell, pointer, knob, etc of the instrument, then check all kinds of plug-ins and wiring, as well as fuse, relay, component solder joint, parts arrangement, etc., and observe whether these parts are in normal state (2) start up the machine and check whether the light-emitting elements in the machine are normal; whether there is abnormal sound, whether there is abnormal phenomenon such as smoke and discharge, or there is peculiar smell such as burnt paste; whether the temperature of the heat-emitting elements such as the motor is within the specified range; whether the mechanical transmission part and gear wheel are orderly meshed, whether there is deformation, wear or jamming (3) the voltage method uses multimeter to measure the voltage of the possible fault part, including: DC voltage measurement, such as the electronic tube, DC power supply voltage, the outgoing angle of the integrated block to ground voltage; AC voltage measurement, such as the output voltage of the AC voltage regulator (4) after the preliminary determination, the open circuit method will cut off the part that may have fault and the whole circuit, and observe whether the fault will disappear II Maintenance measures for automatic instruments of hydrogenation high-pressure reactor: 1 The appearance surface of instruments of hydrogenation reactor shall be kept clean and tidy at all times, and the mechanical sliding part shall be paid more attention Once there is a tendency of inflexible operation or rusting, it shall be wiped and lubricated immediately In chemical plant, boiler room and other places with strong corrosiveness and easy to produce a lot of dust, it is necessary to scrub and check the motor, potentiometer, transmission gear and other components, and keep the transmitter, valve seal, plug and socket clean, which is the basis of normal operation of the instrument 2 Hydrogenation reactor system: first of all, there should be a relatively sound instrument maintenance system, which can be implemented; second, the maintenance team should do a good job every day; after Zui, the transmitter maintenance should pay attention to linearity, pressure, variation and other indicators, and adjust the position of the zero adjustment spring to Zui, so that the output signal can settle evenly without sudden jump.