How to correctly distinguish the weighing instrument failure of weighing and sorting equipment
How to correctly distinguish the fault of the weighing instrument of the weighing and sorting equipment. The weighing instrument is a relatively important part of the weighing and sorting equipment. It can store and count the weighing data. The weight of a single product, the total weight and quantity of the whole batch can be exported and viewed at will, and it can be stored for one year; at the same time, the weighing score can be judged by the data displayed by the weighing instrument. Select whether the equipment is faulty, and take fault prevention in advance to avoid unnecessary losses. Here, the editor of Guangdong kenweigh has compiled the methods for judging the failure of weighing instruments for everyone, hoping to help users better maintain the weighing and sorting equipment. 1. Observation method 'Observation method' is a method to find the cause of the fault through direct inspection of the human body. There are usually several methods: eye observation, ear hearing, hand touch, nose sniffing: eye observation is to observe the instrument and sensor ( Whether the wiring of the junction box is normal, whether the power supply and control wires are connected normally, whether there is disconnection, contact, short circuit, etc.; and observe whether there is burnt inside the meter, whether there is water ingress, whether the insurance is disconnected, etc. Hearing is to listen carefully to see if there is any abnormal noise inside the instrument. Touch by hand means to check whether the temperature of the transformer, wire package, filter capacitor and other components is abnormal. Sniffing is to smell the burning smell inside the machine. 2. Insertion and extraction method The 'insulation and extraction method' is to unplug a component and then plug in an analog component to see where the fault is and find the cause of the fault. For example, if the display of the weighing instrument is unstable, unplug the connecting cable between the junction box (load cell) and the instrument, and connect to the simulator. In this case, the meter reading becomes stable, indicating that the problem lies in the junction box or the sensor. Otherwise, find the problem from the instrument. 3. Substitution method The 'substitution method' is to use normal components, circuit boards, etc. to replace the components with faulty points, and whether they return to normal after replacement, so as to find out the cause of the fault. Fourth, the comparison method 'comparison method' is to use a multimeter, oscilloscope and other instruments to measure the voltage, resistance, waveform and other data of the suspected parts of the fault, and compare it with the normal value to judge whether the component is faulty. 5. Static characteristic measurement method (measurement method) 'Measurement method' is a method of measuring the level of each point in a certain state of the instrument with a multimeter, and then analyzing and judging the cause of the fault according to the logic principle. Sixth, code diagnosis method 'Code diagnosis method' is a judgment method to find out the problem through the error code obtained by the self-diagnosis of the instrument. The above six methods are for reference only, and specific faults need to be checked by professional technicians. If the user does not understand the technology, it is difficult to automatically repair and disassemble, so as not to damage the important components of the equipment, you can notify the professional maintenance personnel to come to investigate and ensure that the weighing and sorting equipment can be used normally. The equipment produced by Guangdong kenweigh allows customers to buy and use with peace of mind.
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