Machine Fault Diagnosis - Introduction to CEM Noise Meter
For the selection of noise meters, it is necessary to distinguish. Different types of noise meters should be used for measuring different environments. Guangzhou Hongcheng has launched a series of professional noise meters, such as the DT-85A noise meter, which is suitable for measuring the noise in residential areas, schools, and home environments; The noise meter DT-815 is particularly suitable for measuring mechanical industrial noise, etc. Its series of noise meters can be widely used in various noise engineering, quality control, health prevention and various environmental sound measurement applications, such as residential areas, industrial and mining areas, schools, airports, and other occasions.
Mechanical production carries out noise control. When diagnosing faults caused by excessive engine noise, a noise meter can be used for first troubleshooting, such as those generated by air compressors and power take-off. Do not mistake these noises for engine noise, and remove the accessory drive belt to eliminate the noise caused by these devices. Noise can also spread to metal parts that are not already problematic, so using a noise meter and stethoscope will help determine the location of motive noise.
Main bearing noise: The knocking noise generated by loose main bearings can be heard when the engine is under load, and its noise is loud and dull. When the engine is dragging or driving under heavy load, this noise is the loudest and the knocking sound is more dull than the noise generated by the connecting rod. Using Guangzhou Hongcheng's noise meter DT-8852 for measurement, it can select A and C gears, measure low audio noise using A gear, measure high-frequency noise using C gear, and store data for easy connection to computers for analysis and noise source investigation.
