Our new eBook “Q&A – The top 10 posts on our blog” is now available for download. Throughout 2011 we’ve been posting information and answers to questions from our customers, distributors and sales team on our blog at cirrusresearch.co.uk/blog. This book contains the top 10 posts that you, our customers, have been reading and commenting on. Some of the posts have Read More…
Archive | FAQs
Questions & Answers
What is a Class 1 Sound Level Meter?
A Class 1 Sound Level Meter is a noise measurement instrument that meets the requirements of IEC 61672-1:2002 (or an equivalent such as BS EN 61672-1:2003) to Class 1 performance. Tolerances & Accuracy This standard specifies two levels of performance, Class 1 and Class 2, with Class 1 being effectively more accurate. Within the standard are a set of performance criteria Read More…
What’s the Difference Between a Class 1 and Class 2 Sound Level Meter?
We’ve covered the differences between Class and Type in sound level meter standards in a previous post but what the differences between a Class 1 and Class 2 sound level meter? Expand your Noise Knowledge!Signup to the NoiseNews blog for the latest article updates straight to your inbox. Email Send Message
You need a sound level meter, but what for?
In my 10 years experience as an Export Sales Manager, I am often approached for a Sound level meter with little additional information as to the intended use of the instrument. Sound level meters come in a range of different configurations which lend themselves to different applications. When enquiring to purchase a sound level meter the most important piece of Read More…
What is the Difference Between Class and Type for Sound Level Meters?
The sound level meters and noise dosemeters that Cirrus manufactures are designed to meet the performance criteria laid down in various standards. For example, the optimus sound level meters are designed to meet the requirements of BS EN 61672-1:2003 which is also known as IEC 61672-1:2002. Within these standards there are many different performance criteria that the instrument must meet Read More…
Why do instrument standards have different dates?
I’ve been asked recently to confirm if a sound level meter is marked as meeting IEC 61672-1:2002, does it also meet BS EN 61672-1:2003? Instruments such as sound level meters are designed to meet certain standards and these are published by a range of International, Regional and National standards organisations. In the case of sound level meters, the standards that Read More…
Why don’t Noise Dosemeters have a Class or Type designation?
All of the noise measurement instruments that you use should comply with one or more standards which specify the accuracy that the unit should have. There are many different standards for noise measurement instruments such as sound level meters, noise dosemeters and acoustic calibrators and these will each have their own specific requirements, tolerances and performance criteria. Email Send Message Read More…
How does a noise nuisance recorder work?
A Noise Nuisance Recorder, such as the Cirrus Trojan, is a noise measurement instruments that can record both noise levels and audio files which are used to measure, record and assess noise nuisance complaints. It is discreetly installed by the Officer in a complainant’s property without the knowledge of the alleged perpetrator of the noise. It is set running and locked Read More…
Where can I get advice about noise measurement instruments?
This may sound like an odd question, especially when you consider what we do at Cirrus!. The obvious answer would be to say “Cirrus” and that’s what I’m going to say. Ask us and we’ll be pleased to help. Over the course of our history (which goes back 40 years!), we’ve gathered a wealth of knowledge, information and advice about Read More…
Top 10 reasons why repeating a noise measurement could give different results
Hereâs a post from Gill Cussons, one of our UK Business Development Managers. Gill has been working with our UK customers for a few years and has come across such a wide range of questions that sheâs put together an answer to a common one. So over Gill. Your sound level meter is a precision instrument and as long as Read More…
