To objectively evaluate the “health level” of the environment it is necessary to measure a few parameters, among which the most important one is the level of noise. The class I sound level meter is a tool which reacts to noise as well as the human ear, but is able of measuring the intensity of the noise very accurately and precisely. Noise may be a very annoying and stress causing factor and thus, its measurement and regulation is a task of the employer in his office and at the factory, of the construction workers or people responsible for entertaining arrangements, of the staff in hospitals and schools, at the airports and train stations, the list may be continued and continued. There are strict sanitary norms, since noise level maintenance is similar to hygiene, and deviations from these official norms must be avoided, because of the long list of aggravating consequences and health damages which inevitably follow in case of non-compliance with the rules.
Nosie may have different origin, different duration, and depending on the frequency it may be precepted by the human unprotected ear differently. The class I sound level meter in no time is able to provide the operator with the full spectrum of information about what type of noise occurs and for how long. Due to the data-logging function, this first-class noise measuring device can gather the information continuously. Which helps to get a clear picture about the noise environment at a particular location during longer time periods, which may be very helpful, for example, when planning the new projects, choosing the place for schools, hospitals, new residential districts etc. the sound meter is calibrated, as a rule, before its application, and the results which it provides are, thus, reliable and repeatable.