Methods of Noise Level Detection
1. Simple on-site testing Simple on-site testing, commonly used ordinary sound level meter (also called noise meter) to detect the noise of equipment. During on-site inspection, first estimate the size of the equipment, and then determine the location of the measuring point. Assume that the maximum size of the equipment to be tested is D, and the positions of the test points are as follows: When D < 1 meter, the distance between the test points and the surface of the equipment is 30 cm. When D-1 meter, the test point is 1 meter away from the surface of the equipment. When D > 1 meter, the test point is 3 meters away from the surface of the device. For general equipment, 4 test points should be selected, and 6 points for large equipment. The test height is generally: small equipment is 2/3 of the equipment height; medium equipment is 1/2 of the equipment height; large equipment is 1/8 of the equipment height. For fans, compressors, water pumps, gear devices, etc., please refer to Japanese JIS standards. Generally speaking, the test environment requirements are sometimes difficult to meet, and the test only plays an estimating role at this time.
