How to Calibrate a Sound Level Meter How to Calibrate a Sound Level Meter
Now that you have your sound level meter, you are ready to take some measurements. However, before you do any kind of measuring, you should calibrate your sound level meter. The best thing to learn to practice is to calibrate before each measurement, and after you are done taking measurements as well. This will ensure The you are getting the right sound measurements each time you use your device. Below are the steps that need to be taken when calibrating your sound level meter. The steps are easy to follow, because it's a pretty basic job of calibration, and a fast job at that as well.
Step 1 - Sound Measurements
A sound level meter is a measuring device that measures the strength of sound in decibels. There are different types of these meters, but all of them contain 3 main parts; the microphone, which is used to capture the sound. Then there is the processing section which is self explanatory; the area where the sound is processed. Last but not least we have the unit that contains the read out, which is digital and lets you know the outcome.
Step 2 - Start the Calibration
Take your external calibrator and turn it towards the microphone on your unit. Taking your calibrator and putting it right over your microphone is very effective as well. Then, you simply turn on your calibrator, and let it works its magic. This will calibrate your sound level meter.
Step 3 - If it Needs Tuning
Doing the calibration should show the levels as being equal to one another. This means that the meter level should show a level equal, or very close to the output level. If this is not true, you will probably want to send or bring in your sound level meter for some tuning.
Step 4 - Ready
Now that you have calibrated your sound level meter, you are ready to take some measurements. To do this, simply take your unit and point the microphone directly against the noise that you want measurements for. It will hear the noise, process it, then show you the outcome on a digital display.
Step 5 - Turn it Off
You can simply remove the battery, and put the unit away until next time. Or you could choose to calibrate it once more now that it has been used. It is not possible to over-calibrate a sound level meter. Most of the time if calibrate before and after you are bound to have a unit that measures precisely each time.
Sound level meters are a very interesting little device. If you take the time in caring, and calibrating your unit, you will be pleasantly surprised by the accurate outcome that it gives.