Human ear is a perfect detector for that and when the sound gets too loud, it causes inconvenience and even pain. 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. In case of decibels, there is a rule to remember that an increase of only a few dB means the loudness / power getting 2-times higher. The ‘equivalent continuous sound level’, Leq, is known around the world as the essential averaged parameter. The sound level meter calculates the equivalent continuous sound level Leq (LXeq).- Measuring range: 25 ... 136 db(A)- LXY (SPL), Leq (LXeq), LXYSD, LXSEL, LXE, LXYmax, LXYmin, LXPeak, LXN- Frequency weighting: A, B, C and Z- Time weighting: Fast (125 ms), slow (1 sec) and impulse (35 ms), decay (1500 ms)- adjustable data-recording interval from 1 s ... 24 h- 1/1 octave band filter (optional 1/3 octave band filter upgrade)- incl. Although typically used in laboratories and more advanced technical applications, a class 1 sound level meter usually divide the frequency spectrum into octaves and third bands. It is a bit more complicated than just a traditional average calculation, since there are logarithms behind noise/sound level measurements, but nevertheless, it gives an exact information whether the noise level in a certain area or in the workplace is satisfactory or unacceptable. The existing regulation take 8-hour working day as standard. A-weighting adjusts a signal in a way that resembles the human ear’s response at medium-range levels. For sound level measurements of traffic or neighborhood noise, a datalogging sound level meter that record sound levels over time are ideal. Vibrations. It's been over 60 years since Brüel & Kjær invented the world's first portable sound level meter. The time evaluation of a sound level meter comprises three ranges, based on which the respective average value is formed and displayed. Our customers have recognised us as trusted experts in noise measurement since 1969. Calibration certificates are issued specifically for the customer and are excluded from the right of return. For more accurate noise exposure measurement, it is also required to register the peaks, if such occur. Type 3 sound level meters may be used for household applications, for example, for determining the level of noise. In addition to checking calibration before and after measurements, many regulations and standards governing sound level measurements often also require that your sound level meter is calibrated in a laboratory once every 12 or 24 months. Thus, if the rule says that the 50dB limit should not be exceeded, and the increase of 10-15 dB seems to be harmless, since it is far from usual double value (100), it is not true and the change of 15 dB is a significant change in reality, which should be taken into consideration. - Manual range: 30 ... 80 / 50 ... 100 / 80 ... 130 dB Also extension microphone cables can be used to have really remote measurements. - Outdoor measurement of sound and noise It is the responsibility of each sound level meter user to determine and check the interval between calibrations. This integrating precision pulse sound level meter complies with all applicable standards and guidelines. Road Traffic Noise. - 1/3 octave band optional No matter, which frequencies it goes about, the tolerances for Class I devices are always much tighter than for Class II. A sound level meter is a measuring instrument, designed to measure sound levels in a standardized way. protective measures need to be taken to ensure overall health, safety Sound Level Meter / Noise Level Meter PCE-MSL 1, Class 2 Data Logging Sound Level Meter PCE-428, Class 2 Data Logging Sound Level Meter PCE-428-ICA incl. 2. Digital Noise Meter for Noise Level Testing, Low-cost digital noise meter ideal for spot checks, audible alarm testing and for quick assessments of noise levels, Noise at Work Sound Level Meter - Nova 44 (Class 2), A Class 2 integrating sound level meter with data logging. In which case, calibration is applied to restore or verify the accuracy of a sound level meter. Noise may be a harmful and dangerous health destructing factor and this is one of the points that every employer should care about. Request More Product Information - Automatic range: 30 ... 130 dB The planning, the strategy and the practical aspects of a noise survey are discussed in Chapter 7. It is an instantaneous sound and often it exceeds the maximum value. For a class 2 sound level meter, the deviation over the complete frequency spectrum may be slightly higher. - Statistics function In general, the A Frequency Weighting is applied when it goes about assessment of any possible damage the noise may cause to the ear / hearing, and how the ear react to that noise. The International Organization for Standardization (ISO) primarily deals with a methodology to ensure that procedures are defined to enable comparison of results. 0000009459 00000 n A lass 1 sound level meter has a broad frequency spectrum and a very small deviation. Commonly referred to as a sound meter, noise meter, decibel meter, or sound pressure level meter, a … Sound Level Meter in working process, Construction Noise C-weighting is applied for sounds which occur at lower frequencies. Type 4 could be applied there where extreme accuracy was not the main priority and the measurements could be carried out over and over again. Thus, PCE-322A is ideal for real-time noise measurement as well as for long-term noise exposure monitoring over time. As a rule, they are very loud and spontaneous, and though the frequency range is wide, the response is much flatter than in the case of A-weighting. Noise-activated warning sign for use in both noisy or quiet environments. And one thing about evaluating the level of noise at the workplace or any other situation, is to remember that the conventional rule of doubling (x 2) does not work here. The International Electrotechnical Commission (IEC) ensures that instruments are compatible and can be interchanged without major loss of accuracy or data. 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. Top subscription boxes – right to your door, © 1996-2020,, Inc. or its affiliates. Since some sounds do not stay the same and may quickly change, the measuring instrument must react immediately to these changes in order to provide a sufficient level of accuracy and repeatability. Thus, PCE-322A is ideal for real-time noise measurement as well as for long-term noise exposure monitoring over time. 0000001905 00000 n C-weightings concern the reaction of the ear particularly to high noise level. In private life, noise is a controversial issue and it often depends on the personal perception. This sound level meter is supplied with an ISO calibration certificate. 0000005260 00000 n The PCE-428-KIT-ICA Sound Level Meter Kit is commonly used by professionals to ensure compliance with environmental noise regulations and workplace noise permissible exposure limits. Fast evaluation – duration 125 ms – application for constantly changing noises (traffic noises, neighborhood noise, industrial noise). For these applications, a display may not be a necessary component. The whole spectrum for convenience is divided into the octave bands, the noise pressure in which is measured by the noise analyzer. Accurate sound level measurements can be obtained quickly and easily using a sound level meter with a simple memory. measures and noise exposure estimation. JavaScript is used on this site to improve user experience and enable functionality without JavaScript this site wont work as required. Our wide range of sound level meters, noise meters, personal noise dosimeters, noise activated warning signs, safety professional kits and outdoor noise monitoring kits are designed with the busy health and safety practitioner in mind.


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