Sound Level Meters

A sound level meter is also known as decibel meter or noise meter. The accuracy of this meter is +/-1.4db, +/-1.5db, +/-2db; the range is 30db, 50db; the resolution is 0.1dB, display update 0.5 sec; the item weight is 240g, 250g, the frequency lies between is 31.5Hz to 8Hz, the measuring range is 30 to 130dB. It is available in black and white colors. It is used in noise monitoring stations, building acoustics and other fields.

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Detailed Description for Sound Level Meters

A sound level meters are used for acoustic ( a sound that travels through the air) measurements. It is commonly a hand-held instrument with the microphone. The diaphragm of a microphone responds to changes in air pressure caused by sound waves. That is why an instrument is sometimes referred to as  Sound Pressure Level (SPL) Meter. This movement of a diaphragm, i.e. a sound pressure deviation (pascal Pa), is converted into an electrical signal (volts V).

A microphone is distinguishable by a voltage value produced when known, a constant sound pressure is applied. This is known as the microphone sensitivity. The component needs to know the sensitivity of the particular microphone being used. Using this information, the instrument is able to precisely convert the electrical signal back to a sound pressure and display the resulting sound pressure level (decibels dB).

The sound level meter is commonly used in noise pollution studies for the quantification for different kinds of noise, especially for industrial, environmental and aircraft noise. However, a  reading from a sound level meter does not correlate well to human-perceived loudness, which is better measured by a loudness meter.



Large LCD display

Easy to read

Used for both audible sound and machine noise.
Calibration: Electrical calibration with the internal oscillator 

Small and light weight design allow one hand operation. High quality with economical cost


Noise monitoring stations


Building acoustics


Reverberation time



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