Several testing methods of stainless steel filter screen

No matter what kind of filter equipment is used, it is very helpful for us to test it before using it Today, we will introduce six kinds of testing methods for stainless steel filter screen to you Let's have a look at them as soon as possible This is a kind of inspection by using vision, smell, touch and other senses Sometimes the damaged filter parts will show discoloration, blistering and even burning spots; if the burned parts will give out special smell; the short-circuit chip will be hot; there are also some faulty welding or desoldering that can be seen with flesh eyes When this series of questions appear, it shows that the damage of filter equipment is relatively serious, so it is recommended not to use it II Temperature rise and fall method After working for a long time, or operating in such a high-temperature working environment in summer, it is easy to show faults After shutdown, check and develop everything normally When restarting, it still shows normal However, if the faults always appear frequently, in order to find out the causes of the faults, we can use the temperature rise and fall method When the equipment is faulty, wipe it with cotton fiber dipped with a little anhydrous alcohol at the possible faulty part, so as to reduce its temperature, and then observe whether the fault is eliminated; and warming up means that the temperature in the environment is increased by human action, such as putting the electric soldering iron near the suspected faulty part, to see whether the fault will appear III capacitance bypass method When a circuit in the device presents a relatively strange phenomenon, such as display confusion, we can use the capacitance bypass method to determine the fault part The method is to connect the capacitance across the IC power supply and ground, and the transistor circuit across the base input or collector output, and observe the impact on the fault If the capacitor bypass input is invalid, but the fault disappears at the bypass output, it can be determined that the fault is present in this level of circuit IV percussion method Sometimes we often encounter the phenomenon of good or bad equipment, most of which are caused by poor contact or faulty welding of equipment In this case, we can use the percussion method The so-called percussion is to use a special rubber hammer to gently tap the defective part, and then tap the plug-in board or parts under this part to see if there is any error Or stop the machine V the elimination method is also very simple, that is, to judge the cause of fault presentation by pulling out some plug-in boards or other components in the device When a plug-in board or component in the device is pulled out and the device returns to normal, it means that the fault is presented here 6 The shoulder riding method can also be called the parallel method, that is, to install a good chip on the chip to be checked, or to connect the good parts with the parts to be checked in parallel, so as to maintain good contact If the fault comes from the internal part of the part rather than the bad contact, the fault can be eliminated by this method After the above test methods, we can determine the performance of stainless steel filter screen What we need to pay attention to here is to select according to the actual situation, and the applicable methods of different equipment are also different.