Sound Level Meters

A sound level meter also referred to as sound pressure level (SPL), decibel (DB) meter, noise meter or noise dosimeter is used to for measuring sounds that travel through the air. It is used to assess noise or sound levels by measuring sound pressure. It uses a microphone to capture the sound and the sound is then evaluated within the device. They are mainly used to protect hearing from loud noises to create a better environment in every industry.
GAOTek developed advanced sound level meters that are high quality, affordable, and accurate. They are very versatile instruments for the measurement of sound pressure. We have a wide variety of selection of sound level meter that will help you assess noise or sound level with the simplest operation. With precise measurements, we ensure that you will be satisfied when using our products.
GAOTek sound level meter are the best when it comes to quality and high accuracy readings. The process can be done in an effective and efficient way with GAOTek’s various types of sound level meter.

Technologies

A sound level meter is composed of different types of technology. There is the preamplifier, weighting network or filters, amplifier, and rectifier.

·       Microphone – It is the transducer or sensor of the device that converts the picked-up sound into an electrical signal.

·       Preamplifier – An electronic device that amplifies a very weak signal, from a microphone or picks up, then it transmits it to the main amplifier.

       Weighting network or filters – It is used to distinguish against different frequencies designated as A, B, C, D.

o    An A-weighting filter is commonly used to emphasize frequencies around 3-6 kHz where the human ear is most sensitive while attenuating very high and very low frequencies to which the ear is sensitive. It is only valid for relatively quiet sounds and for pure tones.

o    A B-weighting filter is used for predicting the performance of loudspeakers and stereos, but not industrial noise.

o    A C-weighting filter scale is quite flat and therefore includes much more of the low-frequency range of sounds than A and B.

o    Lastly, a D-weighting filter is used to assess loud noise such as aircraft.

       Amplifier – It is an electronic device that can increase the power off signal. It functions is to take power from a power supply and controlling the output to match the input signal shape but with a larger amplitude.

       Rectifier – A device that converts an alternating current into a direct one by allowing a current to flow through it in one direction only.

o    The technologies that were used in GAOTek’s sound level meter have been made much progress on reliability, simplified operation procedure, improved measurement resolution and upgraded application function for software.

Features

GAOTek sound level meter offer a lot of key features that are helpful in operating the device easily and for an accurate reading.

       Latest digital technology with a high-resolution color TFT display

       The on-off control is a toggle function. Pressing the on/off key will turn the device on or off. If the hygrometer is left on with no activity for a period of time, the unit will turn itself off to conserve the battery.

       Ideal for environmental or occupational monitoring

       Single measurement range up to 130dB, no range adjustment required

       Simultaneous measurement of all parameters with all frequency and time weightings

       A low battery indicator is also included. A weak battery can cause imprecise measurements or improper operation. A low battery indicator is provided on the display to show that the battery needs to be recharged. It is required to charge the battery to make sure that you get the best results in the device.

       Voice notes to annotate measurements

       Audio (WAV) recording

       Data markers, back erase function and audio recording

       A variable response time and a large memory to store the data

       Up to 15 hours of battery life

       Offers 4 measurement parameters: Lp (sound level); Leq (Equivalent Continuous A Sound Level ); Lmax ( Maximum Sound Level) and LN (Percent of all readings over alarm value set )

In addition to all these features, our products have a high precision of measurements, high resolution, and quick sampling speed. More importantly, our products are also affordable when it comes to your budget. With all the various kinds of torque testers manufactured by our company, you can have different options to choose from.

Applications

Sound level meter are used in different industries. They help to control the noise exposure in a certain place to avoid loud noises that can destroy human hearing. Below are the following applications where sound level meters are used.

       Environmental Noise

       Industrial Noise

       Occupational Noise

       Construction Noise

       Airport Noise

       Rail Noise

       Motorsport Noise

       Mining Noise

       Traffic Noise

       Community Noise

       Wind Farm Noise

       Noise Ordinance Enforcement

The sound level meters are also well suited for acoustic development in the automotive, appliance, motorcycle, turbine, and speaker industries. It helps to develop quieter products to create a better environment.

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