Post was not sent - check your email addresses! At www.castlecalibration.com you can find out pricing and build your own calibration quote online. Home > Safety & Environmental Help and Guidance > Environmental Noise > Sound Meters – How often should my Sound Meter be Calibrated? Noise 101: What is Equivalent Continuous Sound Level (Leq)? Some Regulations (like the 2005 Control of Noise at Work Regulations) state that a sound level meter should be returned every two years and the Acoustic Calibrator every year. If the sound level meter fails to indicate the correct sound pressure level, its sensitivity is adjusted until it indicates the correct value (some countries put restrictions on your right to adjust the meter, if your measurements shall comply with certain standards). Visit Cirrus Research for our range of sound level meters and noise measurement instrumentation, Cirrus Research: Breaking the Sound Barrier in Motorsport, Research reveals drop in noise pollution during Covid-19 lockdown, UK Government Introduces New Covid Noise Limit For Bars, Pubs & Restaurants, Cirrus Research partner with Yorkshire racing driver Max Coates, Peace of mind that your sound level meter is measuring consistently over a given time period, Proof from the manufacturer that sound level meter and Acoustic Calibrator are functioning normally, Improved performance and a longer lifespan if you look after it, it will last longer, If your sound level meter comes under warranty, it may become invalid if regular calibration is not carried out. However, the more often you have the sound level meter calibrated, the less risk of your measurements being questioned. !b.a.length)for(a+="&ci="+encodeURIComponent(b.a[0]),d=1;d=a.length+e.length&&(a+=e)}b.i&&(e="&rd="+encodeURIComponent(JSON.stringify(B())),131072>=a.length+e.length&&(a+=e),c=!0);C=a;if(c){d=b.h;b=b.j;var f;if(window.XMLHttpRequest)f=new XMLHttpRequest;else if(window.ActiveXObject)try{f=new ActiveXObject("Msxml2.XMLHTTP")}catch(r){try{f=new ActiveXObject("Microsoft.XMLHTTP")}catch(D){}}f&&(f.open("POST",d+(-1==d.indexOf("?")?"? If the instrument has had to offset any variation, it should display this as well. Recalibration essentially checks all of these components and that the performance of the equipment is the same as when it was manufactured. Fortunately, this is no longer the case, sound level meters are as stable as calibrators. It’s well known that Sound Meters inevitably need to be calibrated to keep performing accurately, but a question we’re often asked is, “How often does my Sound Meter need to be Calibrated by a calibration lab?“. A lower number indicate better quality and accuracy. For field calibration, you should be using your Acoustic Calibrator before and after each measurement. The Acoustic Calibrator fits over the microphone and outputs a consistent sound level for the microphone to detect. For sound level meters the width of this acceptable interval of estimates will depend on which type or class it belongs to. ":"&")+"url="+encodeURIComponent(b)),f.setRequestHeader("Content-Type","application/x-www-form-urlencoded"),f.send(a))}}}function B(){var b={},c;c=document.getElementsByTagName("IMG");if(!c.length)return{};var a=c[0];if(! every year, every second year etc.) Recalibration essentially checks all of these components and that the performance of the equipment is the same as when it was manufactured. Click to share on Facebook (Opens in new window), Click to share on Twitter (Opens in new window), Click to share on LinkedIn (Opens in new window), Click to share on Pinterest (Opens in new window), Click to email this to a friend (Opens in new window), Cirrus Research: Breaking the Sound Barrier in Motorsport, Research reveals drop in noise pollution during Covid-19 lockdown, Noise Nuisance Training – Learn how to get the best from your Cirrus Trojan Noise Nuisance Equipment, Visit Cirrus Research for our range of sound level meters and noise measurement instrumentation, UK Government Introduces New Covid Noise Limit For Bars, Pubs & Restaurants, Cirrus Research partner with Yorkshire racing driver Max Coates, When the information collected is to be used for legal purposes (for example to show compliance with occupational noise standards such as the Noise at Work Regulations or OSHA’s 1910.95), Where the measurement data is to be used to select hearing protection or noise control products, Where the information is to be used for environmental compliance or for a planning application. How to Calibrate a Sound Level Meter Calibrating your Sound Level Meter before taking measurements. A sound level meter or noise dosimeter is a precision instrument and so should be treated with care. The procedure of making your sound level meter measure correctly is called calibration. That means you can compare the reading you have just taken with a similar reading you may have taken 6 months ago safe in the knowledge that any variation in performance has already been taken into account. Step 4 - Take Measurements. How Often Should The Sound Level Meter Be Calibrated (field Calibration By "acoustic Calibrator" Or Pistonphone)? Home > Safety & Environmental Help and Guidance > Noise at Work Assessments > How to Calibrate a Sound Level Meter. The frequency that you should calibrate your pH meter depends on many factors such as the type of your test samples, performance of electrodes, and the requirement of the accuracy. Before we go into how often you should be calibrating, I just want to quickly recap what we mean by sound level meter calibration. For small items like transducers with insufficient space for stickers, the sticker is attached to the box in which the item is delivered. As with any precision instrument, components age and can be subjected to changing environments. Twitter Giveaway / Competition Terms & Conditions. – Review of calibration history – The calibration period should be reviewed and changed if necessary; a history of stable results may increase the period. Before we go into how often you should be calibrating, I just want to quickly recap what we mean by sound level meter calibration. Calibrate the sound level meter’s response time. National and/or international standards applicable in your country may impose restrictions on which instrument types you may use for a given measurement task. The second is what we will refer to as Recalibration or more correctly Periodic Verification. Keep calibrating! Unfortunately, the word calibration has ended up having two meanings; to describe the use of a sound calibrator in connection with a measurement and to describe periodic verification which is carried out in a Calibration Laboratory. Think of it like an MOT & Service for your car. A sound level meter or noise dosimeter is a precision instrument and so should be treated with care. Most modern standards, regulations of guidelines will clearly state the standards to which the equipment must comply. It involves using an Acoustic Calibrator that is usually supplied as part of your measurement kit. Building acoustics multi channel analyzer ISO16283 ASTM E336. If you’re measuring to any Standard, Regulations or Guidelines it is vital to calibrate your sound level meter. Do you calibrate a sound level meter frequently? I always recommend erring on the side of caution, especially when you are measuring to Standards, Regulations and Guidelines. I hope this answers your questions on how often you should calibrate a sound level meter. Visit Cirrus Research for our range of sound level meters and noise measurement instrumentation, Cirrus Research: Breaking the Sound Barrier in Motorsport, Research reveals drop in noise pollution during Covid-19 lockdown, UK Government Introduces New Covid Noise Limit For Bars, Pubs & Restaurants, Cirrus Research partner with Yorkshire racing driver Max Coates, Peace of mind that your sound level meter is measuring consistently over a given time period, Proof from the manufacturer that sound level meter and Acoustic Calibrator are functioning normally, Improved performance and a longer lifespan if you look after it, it will last longer, If your sound level meter comes under warranty, it may become invalid if regular calibration is not carried out. D. Should Your Precision Microphone (such As Your Sound Level Meter -not Your Microphone For Voice Recording) Be At 0-deg Incident Or 90-deg Incident With The Noise Source? The software in the sound level meter knows what the output from the calibrator should be. Your sound level meter will often be measuring a number of acoustic parameters such as LAeq and LCPeak (and possibly many more such as octave bands and Ln values if you are measuring environmental noise).

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