1. Acoustic-environmental noise measurement measurement method can be in accordance with GB3222-94 "acoustic environment noise measurement method" 2. Measurement methods for urban environmental noise measurement can be in accordance with GB/T14623-93 "urban area environmental noise measurement method" 3. Industrial enterprise noise measurement measurement method can be in accordance with GB12349-90 "Industrial noise measurement method for industrial enterprises" 4. Measurement methods for noise measurement in construction sites can be in accordance with GB 12524-90 "Method for Measuring Noise at Construction Sites" 5. Measurement method for measurement of fixed noise of motor vehicles may be in accordance with GB/T 14365-93 "Measurement method for stationary noise of acoustic motor vehicles" 6. Measurement method for radiation noise measurement of railway locomotives and vehicles may be in accordance with GB/T 5111-95 "Acoustic Railway Locomotive Vehicle Radiated Noise Measurement" 7. Measurement methods for inland waterway and ship noise measurements may be in accordance with GB/T 5964-85 "Measurement of radiated noise from ships in inland waterways and ports". 8. Aircraft noise measurement and measurement methods can be in accordance with GB9661-88 "Aircraft Noise Measurement Method Around Airports" 9. Noise source sound power level measurement measurement method can be in accordance with GB/T16538-96 "acoustic sound pressure method to determine the noise source sound power level using standard sound source simple method" 10. Environmental vibration measurement and measurement method according to GB10071-88 "urban area environmental vibration measurement method" Blood Sugar Test,Blood Glucose Meter,Blood Sugar Monitor,Blood Glucose Monitor Ningbo Dasky Life Science/ Eralab Scientific Instrument(HK)Co., Limited. , https://www.daskyswab.com
For the sake of consistency, some noise measurement standards have been developed internationally and domestically. These standards not only stipulate the methods of noise measurement, but also stipulate the technical requirements for the use of sound level meters. We can use these standards to better understand Select the appropriate sound level meter.
Required measurement values ​​are LA, LAeq, LN (L5, L10, L50, L90, L95), Ld, Ln. Accuracy requirements for the instrument are more than type 2 integrated sound level meter and environmental noise automatic monitoring equipment, performance in line with GB3785 "sound level "Electricity, sound performance and measurement methods" provisions.
The required measurement values ​​are LA, LAeq, LN (L10, L50, L90), Ld, Ln, and the instrument accuracy requirements are more than type 2 integrated sound level meter and environmental noise automatic monitoring instrument, the performance is in line with GB3785 "Sound level meter, sound Performance and Measurement Methods.
The required measurement values ​​are LA, LAeq, and the instrument accuracy requirements are type 2 sound level meters and environmental noise automatic monitoring instruments. The performance complies with the provisions of GB3785 Sound Level Metering, Acoustic Performance and Measurement Methods.
The required measurement value is LAeq, and the accuracy requirement for the instrument is a type-2 integrated sound level meter and automatic environmental noise monitoring equipment (dynamic range is not less than 50dB), and the performance complies with the provisions of GB3785 “Sound Level Metering, Acoustic Performance and Measurement Methodsâ€.
The required measurement values ​​are A-weighted "fast" characteristic sound pressure level Lp, and the instrument accuracy requires a type 1 or type 2 sound level meter, and the performance complies with the provisions of GB3785 "Sound Level Metering, Acoustic Performance and Measurement Methods".
The required measurement values ​​are LPAF and can also be measured by spectrum analysis. The accuracy requirements for the instrument are type 2 and above integrated sound level meters and environmental noise automatic monitoring equipment. The performance complies with the provisions of GB3785 "Sound Level Metering, Acoustic Performance and Measurement Methods".
The required measurement values ​​are A weighted "fast" characteristic sound pressure level Lp, A weighted "pulse" sound pressure level Lp, instrument type accuracy requirements type 1 or 2 sound level meter, performance in line with GB3785 "sound level meter, sound Performance and Measurement Methods.
The required measurement values ​​are A weighted “fast†characteristic sound pressure level Lp, aircraft noise effective perceptual noise level Lepn, instrument accuracy requirements of type 2 or higher sound level meter and environmental noise automatic monitoring equipment, performance in line with GB3785 “sound level metering, Sound Performance and Measurement Methods.
Test instruments use sound levels of type 2 or above as specified in GB 3785. Measurements are made with a slow block. It is best to use an extension cable or extension bar between the sound level meter and the microphone.
Requires measurement of VAL, VL, VLZ, VLZN. Measuring instruments shall comply with the instruments for measuring environmental vibrations specified in ISO/DP8041-84
Correct choice of noise meter