Sound level meter

The app was developed to help workers make informed decisions about their noise environment and promote better hearing health and prevention efforts. Download the free app today external icon.

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Download the user manual pdf icon. The NIOSH Sound Level Meter app has many important features, it provides a readout of the sound level using the built-in microphone or external microphone if used and reports the instantaneous sound level in A, C, or Z-weighted decibels.

The app also contains some basic information on noise and hearing loss prevention. In addition, the app allows the user to save and share measurement data using the smartphone other communication and media features. If location services are enabled, the app can utilize the GPS feature to provide an exact geospatial location of the noise measurement. Note: Professional sound level meters must comply with a host of acoustical and electrical tests to meet national and international standards.

NIOSH estimates that there are 22 million workers who are exposed to hazardous noise levels every year. During our studies, we realized that most of the apps on the market are oriented at the casual user and lack the accuracy and functionality necessary to conduct occupational and general purpose noise measurements.

NIOSH hearing loss researchers collaborated with an app developer, EA LAB, to create an iOS based sound level meter app that measures and characterizes occupational noise exposure similar to professional instruments.

Dr Meter Sound Level Meter

In addition, the app can serve as a research tool for scientists and occupational safety and health professionals to collect noise exposure data and promote better hearing health and prevention efforts. The REL for noise is 85 decibels, using the A-weighting frequency response an 8-hour average, usually referred to as time-weighted average TWA. Exposures at or above this level are considered hazardous. OSHA sets legally-enforceable permissible exposure limit PEL that require employers to take actions to reduce worker exposures.

Occupational standards specify a maximum allowable daily noise dose, expressed in percentages. The noise dose is based on both the sound exposure level and how long it lasts duration.

This dose limit uses a 3-dB time-intensity tradeoff commonly referred to as the exchange rate or equal-energy rule: for every 3-dB increase in averaged noise exposure, the allowable exposure time is reduced by half. For example, if the exposure increases to 88 dB Aworkers should only be exposed for four hours.

Alternatively, for every 3-dB decrease in averaged noise exposure, the allowable exposure time is doubled, as shown in the table below. It is important to differentiate between noise level and time-weighted average noise exposure.See Details. Russia [Change]. Shopping Cart. Welcome, log in or register.

sound level meter

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Sound level meters, noise dosimeters and noise monitoring systems for industry and factories to assess noise exposure and protect hearing. Noise monitoring systems for around construction sites. For medium and long term noise monitoring with various download options. Noise warning signs and data logging monitoring systems to help create a better environment for the patient. Noise inside and outside clubs and other venues, affecting both staff and local residents.

To assist in reducing noise complaints. Measuring and recording noisy neighbors, loud music, dogs barking and other loud antisocial behaviors. Noise meters for the accurate measurement of sound level. Type 1 and Type 2 meters for occupational and environmental noise measurement.

Shoulder mounted noise dosimeters to monitor a worker's exposure to high sound levels throughout the working day. Medium and long term noise monitoring and control. For indoor and outdoor use at industrial sites, residential areas and entertainment venues. Noise signs and displays to warn of high sound levels. Wall mounted noise activated signs with options for data logging. Meters to assess the risk of hand arm vibration syndrome.

Measure a tool's vibration and monitor a worker's exposure. Real-time measurement of airborne dust, aerosols and fumes. Hand held meters or longer term weatherproof dust monitor. Customer Service Chat. Sound Level Meters Supplying our customers in North America and exporting to countries, NoiseMeters has remained the home for sound level meters and noise dosimeters for over 16 years.

Buy or Rent Our Catalog shows the range of meters available to buy and our Sound Level Meter Rental page shows the short term rental options. Occupational Noise Measurement Sound level meters, noise dosimeters and noise monitoring systems for industry and factories to assess noise exposure and protect hearing.

Construction Site Noise Noise monitoring systems for around construction sites. Hospital Noise Noise warning signs and data logging monitoring systems to help create a better environment for the patient. Music and Entertainment Noise Noise inside and outside clubs and other venues, affecting both staff and local residents. Neighbor Noise Measuring and recording noisy neighbors, loud music, dogs barking and other loud antisocial behaviors.

Sound Level Meters Noise meters for the accurate measurement of sound level. Noise Dosimeters Shoulder mounted noise dosimeters to monitor a worker's exposure to high sound levels throughout the working day. Monitors and Controllers Medium and long term noise monitoring and control. Noise Warning Signs Noise signs and displays to warn of high sound levels. Vibration Meters Meters to assess the risk of hand arm vibration syndrome.

Dust Meters Real-time measurement of airborne dust, aerosols and fumes. Occupational Noise Survey Meter.A sound level meter is a measuring instrument used to assess noise or sound levels by measuring sound pressure. Often referred to as a sound pressure level SPL meter, decibel dB meter, noise meter or noise dosimeter, asound level meter uses a microphone to capture sound.

The sound is then evaluated within the sound level meter and acoustic measurement values are shown on the display of the sound level meter. The most common unit of acoustic measurement for sound is the decibel dB ; however, some sound level meter devices also determine the equivalent continuous sound level Leq and other acoustic parameters.

With a portable sound level meter, industrial hygiene and workplace safety professionals can measure sound levels in multiple locations to ensure environmental conditions fall within recommended exposure limits RELs. Some sound level meter devices can be permanently installed for continuous monitoring of sound levels at a work or job site. An important attribute to consider when searching for a suitable sound level meter is its type or class.

PCE sound level meter products are lightweight, easy-to-use and manufactured in accordance with the highest industrial standards. Construction Noise Road Traffic Noise. This portable high-accuracy sound level meter has a large easy-to-read illuminated LCD screen that displays the sound pressure level SPL numerically and graphically in real time.

The sound level meter calculates the equivalent continuous sound level Leq LXeq. The class 2 outdoor sound level meter PCEEKIT, from the field of environmental measurement technology, is an optimal sound level meter for measurements at workplaces, construction sites, in traffic, airports, etc.

The outdoor sound level meter is equipped with an octave band frequency filter. The additional kit for outdoor sound measurement makes it possible to measure outdoor noise with a sound level meter over a long period of time, even in the rain. ISO calibration certificate - incl. The sound level meter also functions as a data logger, recording measurements at an adjustable interval from 1 s The PCEA is a handheld, portable, professional class 2 sound level meter or decibel dB meter with built-in data logging or data recording functionality.

Thus, the PCEA is an ideal real-time noise measuring device as well as being useful for long-term noise exposure monitoring over time. The logged data can easily be downloaded to a PC or Portable for analysis. PCEA is a handheld, portable, professional Class 2 sound level meter or decibel dB meter with built-in data-logging or data-recording functionality.

Sound Level Meters

Thus, PCEA is ideal for real-time noise measurement as well as for long-term noise exposure monitoring over time. The recorded decibel readings of the Sound Level Meter PCEA help users determine if and what protective measures need to be taken to ensure overall health, safety and productivity in industrial, commercial, occupational, educational and residential environments. This sound level meter is supplied with an ISO calibration certificate. ISO Calibration Certificate.

The LEQ value is only calculated by the software after the data transfer from the device to the PC or laptop. ISO calibration certificate Important! The sound level meter is ideal for measuring very low noises, for example, noises from computer fans.

Calibration certificates are issued specifically for the customer and are excluded from the right of return. This portable high-accuracy class 1 sound level meter has a large easy-to-read illuminated LCD screen that displays the sound pressure level SPL numerically and graphically in real time.

This integrated precision pulse outdoor sound level meter kit follows all valid standards and guidelines, and is designed for use outdoors in all weather. Typical applications are the measurement of workplace noise, compliance, environmental noise detection, selection of hearing protector selection, selection of appropriate noise abatement measures and noise exposure estimation.

This portable high-accuracy sound level meter is equipped with GPS functionality, allowing measured values to be assigned to a precise geographic location. The weather conditions do not matter, and hail, snow, rain and similar are no problem for this system for outdoor noise monitoring. The outdoor sound level meter is equipped with a GPS receiver which allows the user to assign the measured values to an exact position.

Noise generated in various environments, at the workplace, at machine controls, on the construction site, at events, e. ISO-Calibration Certificate. In loud environments, it is often difficult to pinpoint the source of a sound.In fact, our latest generation of Sound level meters can be directly managed via smartphones, and with the addition of our feature-expanding applications, you can customize your sound level meter to any measurement task.

And we still lead the industry today. The instrument comes with a range of apps, each tailored to provide functionality for your specific job-to-do. Sound Level Meter with Noise Partner. A sound level meter is an instrument designed to respond to sound in approximately the same way as the human ear.

The purpose is to give objective, reproducible measurements of sound pressure level SPL. The terms sound level meter and noise level meter are commonly used to describe the same instrument. The principal difference, when talking about sound level meters, is the classification of measurement accuracy, as defined by international standards.

To learn more about the basic terms and definitions, check out our Sound and Vibration Glossary. As a company, we believe in sharing knowledge, as such we have collected all of them and made them available for download - absolutely free of charge. We use cookies to ensure our website works properly, to measure traffic, and to collect user statistics that will enable us to make our site more user-friendly.

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Read more about cookies.A sound level meter is used for acoustic sound that travels through air measurements. It is commonly a hand-held instrument with a microphone. The best type of microphone for sound level meters is the condenser microphone [1]which combines precision with stability and reliability.

The diaphragm of the microphone responds to changes in air pressure caused by sound waves. This movement of the diaphragm, i.

sound level meter

While describing sound in terms of sound pressure Pascal is possible, a logarithmic conversion is usually applied and the sound pressure level is stated instead, with 0 dB SPL equal to 20 micropascals. A microphone is distinguishable by the voltage value produced when a known, constant sound pressure is applied. This is known as the microphone sensitivity. The instrument needs to know the sensitivity of the particular microphone being used. Using this information, the instrument is able to accurately convert the electrical signal back to a sound pressure, and display the resulting sound pressure level decibels dB SPL.

Sound Level Meters & Noise Meters

Sound level meters are commonly used in noise pollution studies for the quantification of different kinds of noise, especially for industrial, environmentalmining [2] and aircraft noise. The current international standard that specifies sound level meter functionality and performances is the IEC However, the reading from a sound level meter does not correlate well to human-perceived loudness, which is better measured by a loudness meter.

Specific loudness is a compressive nonlinearity and varies at certain levels and at certain frequencies. These metrics can also be calculated in a number of different ways. The IEC specifies "three kinds of sound measuring instruments". The standard sound level meter can be called an exponentially averaging sound level meter as the AC signal from the microphone is converted to DC by a root-mean-square RMS circuit and thus it must have a time constant of integration; today referred to as the time-weighting.

Three of these time-weightings have been internationally standardized, 'S' 1 s originally called Slow, 'F' ms originally called Fast and 'I' 35 ms originally called Impulse. Their names were changed in the s to be the same in any language. I-time-weighting is no longer in the body of the standard because it has little real correlation with the impulsive character of noise events. The output of the RMS circuit is linear in voltage and is passed through a logarithmic circuit to give a readout linear in decibels dB.

This is 20 times the base 10 logarithm of the ratio of a given root-mean-square sound pressure to the reference sound pressure. Root-mean-square sound pressure being obtained with a standard frequency weighting and standard time weighting.

The reference pressure is set by International agreement to be 20 micropascals for airborne sound. It follows that the decibel is, in a sense, not a unit, it is simply a dimensionless ratio; in this case the ratio of two pressures. An exponentially averaging sound level meter, which gives a snapshot of the current noise level, is of limited use for hearing damage risk measurements; an integrating or integrating-averaging meter is usually mandated.

However, because the unit of sound was historically described in decibels, the exposure is most often described in terms of sound exposure level SELthe logarithmic conversion of sound exposure into decibels.

A common variant of the sound level meter is a noise dosemeter dosimeter in American English. A noise dosimeter American or noise dosemeter British is a specialized sound level meter intended specifically to measure the noise exposure of a person integrated over a period of time; usually to comply with Health and Safety regulations such as the Occupational Safety and Health OSHA 29 CFR This is normally intended to be a body-worn instrument and thus has a relaxed technical requirement, as a body-worn instrument—because of the presence of the body—has a poorer overall acoustic performance.

Traditionally, noise dosemeters were relatively large devices with a microphone mounted near the ear and having a cable going to the instrument body, itself usually belt worn.Here at Walmart. Your email address will never be sold or distributed to a third party for any reason.

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