News Stories, Press Releases and Media Information

The Cirrus stand at Safety & Health Expo wins a Highly Commended Award!

We’re delighted to announce that the Cirrus Research stand at this years Safety & Health Expo has received the Highly Commended Award in the Space Only category! (Well done to SHE Software Ltd who won the 1st prize). We’d like to thank everyone involved in the design and build of our stand this year including all [...]

(May 17, 2013) Read more

Cirrus Product Training Courses – New dates for 2013

To meet demand from our customers, we’ve added a set of new dates for the CPTC or Cirrus Product Training Course. Our courses are held at a number of venues across the UK including the Brands Hatch Circuit, Oulton Park Circuit, The East Midlands Conference Centre and the Castle Combe Circuit. These courses are the [...]

(May 10, 2013) Read more

Type Approval for the Optimus Red & Green Sound Level Meters in Spain to UNE-EN 61672

We’re delighted to announce that the optimus red and optimus green sound level meters have been granted Type Approval to UNE-EN 61672 Parts 1 & 2 in Spain by Applus+, one of the world’s leading testing, inspection and certification companies. After a series of long and detailed tests, which include both electrical and acoustic verification, [...]

(May 7, 2013) Read more

Visit the Noise Doctor at Safety & Health Expo 2013

The Noise Doctor will be on the Cirrus stand F20 at Safety & Health Expo 2013. If you’ve got a question about noise measurement or if you’re looking to see the latest in noise measurement instruments, including the optimus sound level meters, come along and ask us a question. You can also complete one of [...]

(April 24, 2013) Read more

Updated Type Approval for the Cirrus Optimus Green Sound Level Meters

We’re delighted to announce that the CR:171C Optimus Green Sound Level Meter has been granted Type Approval by the PTB in Germany. In addition to these, we’ve recently received Type Approval to UNE-EN 61672 in Spain for the CR:161A, C:161B, CR:161C, CR:1710, CR:171A and CR:171B  instruments. We’re also pleased to announce that the CR:161 series (CR:161A, [...]

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ASSE 2013, June 24th 2013, Las Vegas, USA, More details


Internoise 2013, September 15th 2013, Innsbruck, Austria, More details


NSC Congress & Expo, September 30th 2013, Chicago, USA, More details


Internoise 2014, November 16th 2014, Melbourne, Australia, More details

Cirrus Research plc is a UK based manufacturer of noise measurement instruments.

Founded in 1970 and based in Hunmanby, North Yorkshire, Cirrus specialises in the design, manufacture and distribution of noise measurement instruments that are designed to help users meet the requirements of standards and legislation throughout the world.

Our instruments are innovative and simple to operate whilst being supported by an industry-leading 15 year warranty. With over 40 years of experience we can offer our products with knowledge, backup, support and confidence.

Our products are available worldwide and are available through a range of Cirrus Research plc offices, carefully selected distributors and service centres. We also offer our existing and prospective customers advice and information to help them determine which instrument is best suited to their application.

Our commitment is to provide a high quality product at a competitive price in our core market areas, supporting our customer and distributors with noise measurement instruments that meet the latest and highest standards.

To meet these commitments, Cirrus has implemented a Quality and Environmental Management program that has been certified as meeting the requirements of ISO 9001:2008 and ISO 14001:2004.

Cirrus Research has always specialised in the development and production of noise measurement instrumentation.

Cirrus Research milestones include the world’s first Type 1 Data Logging Sound Level Meter, the first Type 1 Data Logging Real-Time Analyser, and the world’s first twin channel Data Logging Dosimeter to meet the EC Directive 86/188/EEC in all respects.

Cirrus Research Engineers were the first to publish the detailed specifications for the L3M and DP15 interfaces which were successfully used by several other Sound Level Meter manufacturers.

In 1997 Cirrus launched the innovative doseBadge, the world’s first completely self contained wireless noise dosemeter. The doseBadge has been developed continually from its introduction with new features and functions added with each new version.

2006 saw Cirrus obtain the first PTB Type Approval of a Sound Level Meter to the new IEC 61672 standard. The CR:261S Vehicle Noise Sound Level Meter was designed to meet a customer requirement and was designed, certified and delivered within 12 months.

In 2008 the CR:515 and CR:514 Acoustic Calibrators were granted Type Approval by the PTB to the latest standards, the first units of this type to obtain this prestigious certification.

2010 saw the introduction of Optimus, the next generation of sound level meters from Cirrus. The Optimus instruments combine the very latest technology with ease of use to provide the ideal sound level meter for any application.