Sound level meter measuring range
The measurement range of the sound level meter is the main technical indicator of the sound level meter. This technical indicator represents the technological advancement of the product to a certain extent. Generally, it is hoped that the wider the measurement range, the better. The measurement upper limit of the sound level meter is determined by the maximum undistorted sound level of the sound level meter, which can generally reach 130 dB. If you need to measure high sound pressure levels (for example, 172 dB), you need to use a high sound pressure microphone. The lower measurement limit of a sound level meter is closely related to the self-generated noise of the sound level meter itself. If you are measuring low-level noise, choose a sound level meter equipped with a high-sensitivity microphone.
How to use a sound level meter:
1. Use a sound calibrator to check the calibration of the sound level meter.
2. Set the range switch to the appropriate position according to the size of the sound being measured. If the size cannot be estimated, set it to "85-130"
3. Set the time weighting switch to the position specified by the standard; when the sound level is relatively stable, set it to "F" (fast); when the sound level changes drastically, set it to "S" (slow)
4. Set the reading mark switch to "5S" or "3S"
5. Turn the power switch to "on"; the instrument will display numbers when it starts working.
6. If the oversize mark "▲" (the undersize mark "▼") is displayed on the right end of the display, the range switch should be moved up or down to make the range mark disappear. If the range mark cannot disappear, the measured sound level exceeds the measuring range of the instrument.
7. After adjusting the range of the sound level meter, you can read the measurement results from the display.
8. Keep measurement records
9. After the measurement is completed, it is recommended to use a sound calibrator to check the sensitivity of the sound level meter to ensure the accuracy and reliability of the measurement data.
10. Turn the power switch to "Off". If the instrument is not going to be used for a long time, be sure to remove the battery.
