A Sound Level Meter is an essential device for acoustic testing. This device is widely being used for all kinds of noise testing such as industrial, aircraft, and environmental. Before going to the buying guide, let’s get to know the Sound Level Meter a bit better. This device can measure the intensity of sound that travels through the air. Sound can travel through solids, liquids, and gases. Anyway, a Sound Level Meter can’t measure sound that travels through liquids or solids.
The reason why we can’t use it for measuring sound that travels through liquids is that it is an electronic device. You know what would happen to an electronic device if it is immersed in a liquid. Take a look at this picture (http://media.musiciansfriend.com/is/image/MMGS7/Sound-Level-Meter/420954000000000-00-500×500.jpg.) A Sound Level Meter has an LCD screen like all other electronic measuring devices to display readings. The key component is the black spongy-ball on the top. It is the microphone that picks acoustic sound. Sound vibrates the microphone, and electronics in the device convert vibration into digital signals. Well, it is a simple device, which looks similar to a big remote.
Why do you need a Sound Level Meter?
This device is a very helpful one for the people working in industries where excessive noise is present. Human ears can handle sound intensities up to a certain limit only. For example, people who work close to aircraft get exposed to high-intense noise every day. Well, they wear noise-cancelling headphone-type devices. A Sound Level Meter provides accurate readings on sound intensity, so you can take precautions to prevent hearing loss. Another device is there called the noise dosimeter.
A noise dosimeter is a special type of Sound Level Meter that is used for measuring noise exposure of a person. Most noise dosimeters come as a kit with other pieces that are needed for individual noise exposure. So, don’t get confused about what device you should buy. In industries where excessive noise is present, a noise dosimeter is a right device that you should buy.
Sound Level Meter buying guide
Well, this device is not an expensive measuring device. It is a very cheap device when compared to what it does for us. A wide-range of Sound Level Meters are available on eBay for even $11. A noise dosimeter, on the other hand; is somewhat expensive than an SLM. Well, it is very expensive when compared to SLMs. A full kit of noise dosimeter can cost up to $2000. Now, that is serious money.
If you look for a one for just home use, then buy a cheap one. Buying an expensive for home use is not advisable. Anyway, buy it from a reputable manufacturer.
Some final words
If you are not sure about the type you should buy, ask from a professional. Well, operating this device is a piece of cake. It is just a matter of turning on the device. Make sure you point the microphone towards the sound source (which is a downside of Sound Level Meter.) Pointing the device towards the sound source will ensure accurate readings. If not, the device will give readings that are lower than real sound intensity.