There are many situations when technicians are required to measure sound pressure levels while building acoustics or assessing environmental noise. They may also need it while monitoring occupational noise.
This can be done by using a special instrument sound level meter or SLM.
This small hand-held device is made by perfect manufacturers like MEXTECH with accurate calibration that ensures precise and reliable measurement. Classified into two categories, Class 1 and Class 2, sound level meter manufacturers make meters that follow all required regulatory compliance. Precise sound measurement can be achieved through that.
The sound level meter has a windscreen, a preamplifier, a signal processor, and a display. The sound pressure level (SPL) is measured by SLM measures in Pascals, and it converts it into decibels (dB).
The main purpose of using sound level meters is to ensure regulatory compliance, to comply with noise level guidelines, and to optimize the quality of the sound.
It also protects hearing and regulates noise pollution. When you want to identify hazardous noise levels and ensure a safe work environment, the best way is to use a Sound Level Meter.
The working mechanism of sound level meter
Sound waves cause a change in the air pressure that moves the membrane of the microphone attached to a Sound level meter.
It detects this pressure difference and converts these mechanical movements into analog electrical signals. The signals are amplified and converted into digital signals by the analog-to-digital (A/D) converter of the meter.
The output is in the form of digital data displayed in decibels (dB). It can be stored for further analysis. This display brings real-time data on noise level. It shows sound pressure levels in decibels (dB) and frequency analysis in Hertz (Hz).
Thus, it makes possible the immediate assessment and analysis of noise levels. You get fast decision-making in rapidly changing environments.
The sound level meter can measure both instantaneous sound levels (SPL, Peak), continuous or equivalent, and continuous sound levels (Leq).
Sound level meter manufacturers in india make precise meters that have powerful, professional measurement microphones that meet IEC 61094 standards. This ensures accuracy and wide frequency response.
Windscreens are used to keep the microphone protected from water and dust. It maintains the
integrity and precision of the measurements in different environmental conditions.
The role of the sound level meter preamplifier is crucial. It amplifies the signals received from the microphone to a level suitable for processing by the signal processor.
You need the amplification so that accurate noise measurement can be achieved. It also ensures that the signal can be analyzed properly for different noise metrics, including time and frequency weightings.
The role of Sound level meter as data logger
A sound level meter also works as a data logger. This is because it continuously records noise levels. The recording is done in the form of time history data, WAV files, and spectrograms in consecutive intervals as a logger file.
The data is digitally stored. This is essential for ensuring compliance with noise regulations and finding out patterns and trends of noise exposure.
Also read: What Does a Leak Detector Do?