Industrial enterprise noise measurement
Noise measurement of construction site
The measurement method can be in accordance with GB12524-90 "Measurement Method of Noise at Construction Site Boundary", which requires the measured value to have LAeq, and the accuracy of the instrument is required to be type 2 or above.
Dynamic monitoring instrument (dynamic range not less than 50dB), the performance complies with the provisions of GB3785 "Noise Meter Electrical, Acoustic Performance and Measurement Methods".
Stationary noise measurement of motor vehicles
The measurement method can be in accordance with GB/T14365-93 "Acoustic Motor Vehicle Stationary Noise Measurement Method"
The measured value is required to have A-weighted "fast" characteristic sound pressure level Lp, and the accuracy of the instrument is required to be type 1 or type 2 noise meter, and the performance meets the requirements of GB3785 "Noise Meter Electrical, Acoustic Performance and Measurement Methods".
Radiation noise measurement of railway rolling stock
The measurement method can be in accordance with GB/T5111-95 "Radiation Noise Measurement of Acoustic Railway Rolling Stock"
The measured value is required to have LPAF, and spectrum analysis and measurement can also be performed. The accuracy of the instrument is required to be type 2 or above integrated noise meter and environmental noise automatic monitoring instrument.
Inland waterway and ship noise measurement
The measurement method can be in accordance with GB/T4964-85 "Measurement of Radiated Noise from Ships in Inland Waterways and Ports"
The measured value is required to have A-weighted "fast" characteristic sound pressure level Lp, and A-weighted "pulse" sound pressure level Lp. The accuracy of the instrument is required to be type 1 or type 2 noise meter, and the performance is in line with GB3785 "Noise Meter Electrical, Acoustic Performance and Measuring method "stipulations.
Aircraft Noise Measurement
The measurement method can be in accordance with GB9661-88 "Measurement method of aircraft noise around the airport"
It is required that the measured value has A-weighted "fast" characteristic sound pressure level Lp, and the effective perceived noise level of aircraft noise Lepn. The accuracy of the instrument requires a noise meter of type 2 or above and an automatic monitoring instrument for environmental noise. The performance conforms to GB3785 "Noise meter electrical and acoustic performance and measurement methods".
