The multimeter is used in a very wide range, the power electronics sector is the most common, and it is an indispensable metal rotameter on both sides. The multimeter can not only be used to measure the resistance of the object to be measured, but also the AC and DC voltages. Some can even measure the main parameters of the transistor and the capacitance of the capacitor, etc.
Since the scope of use is so wide, the user of the instrument should simply judge its failure. Today, let's popularize the multimeter fault diagnosis together!
1) Use the observation method to check the components, etc., such as whether there is discoloration, blisters or spots, etc., whether there is a special smell, etc.
2) If there are two metal rotor flowmeters of the same model or new spare parts, etc., the replacement method can be used to diagnose the fault. Therefore, we generally recommend that companies with high frequency use have a spare instrument.
3) The performance of the multimeter is good or bad, etc., which are mostly caused by contact errors or virtual welding. The percussion and hand pressure methods can be used to diagnose the fault. For the parts that may cause failure, perform light tapping to see if it will cause an error or stop failure. At the same time, check the plug and power supply, etc. to ensure a stable power supply.
4) Sometimes when the metal rotor flowmeter fails in a high temperature environment, methods such as cooling can be used to eliminate the failure.
