Information About Sound Level Calibrator

What is a Sound Level Calibrator?

A sound level or acoustic calibrator is a small hand-held device that emits a "whistle" of very accurate tone and level. Some calibrators operate at more than one level and even more than one frequency. The most common calibrators operate at 94 dB at 1 kHz. A sound level or acoustic calibrator is a small hand-held device that emits a "whistle" of very accurate tone and level. Some calibrators operate at more than one level and even more than one frequency. The most common calibrators operate at 94 dB at 1 kHz.

How to Use a Sound Level Calibrator

You should use a sound level calibrator to ensure that your sound level meter is working accurately just before making a measurement. Many regulations recommend or demand that you use a calibrator before and after making measurements and it is especially important when your measurements are being used for hearing protection reasons or for any legal purposes. The calibrator should be fitted firmly onto the microphone and switched on. If a 94 dB calibrator is being used then the meters offered on this web site should read 93.7 dB (this is explained in the user manual). The reason for the level read being 0.3 dB lower than the calibrator level is due to the way a microphone works in free space compared to when inside the calibrator's cavity. If the level is not correct then some sound level meters can be adjusted manually while others will do it automatically for you at the push of a button More Models  

20th Jan 2015

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