News Stories, Press Releases and Media Information

Find your ideal sound level meter with our updated optimus product selector

Finding the best sound level meter for your application can often be a challenge. There are hundreds of different models and makes available, each with a wide range of functions and features, some of which you may need and some which you may not. To help you choose the best optimus sound level meter for your [...]

(June 17, 2013) Read more

Introducing the updated Trojan2 Noise Nuisance Recorder

Cirrus Research is pleased to announce the launch of the new version of the Trojan Noise Nuisance Recorder, the Trojan2. Designed specifically for the measurement and monitoring of noise nuisance, the Trojan2 is quick and simple to setup and gives you the all of the noise measurement data and audio recordings needed to effectively assess [...]

(June 14, 2013) Read more

LNE Type Approval for the Optimus Red and Green Sound Level Meters

We’re pleased to announce that the optimus red and optimus green sound level meters are now available with  Type Approval from the LNE in France. This new certification demonstrates compliance with NF EN 61672-1:2003 for a Class 1 sound level meter. The optimus sound level meters also carry Type Approval from the PTB in Germany [...]

(June 4, 2013) Read more

The Noise Doctor is a winner at Safety & Health Expo!

Cirrus won a Highly Commended award for the Best Stand Competition at Safety & Health Expo held at the NEC Birmingham in May! Cirrus Research saw off tough competition to be crowned Highly Commended in the first ever Best Stand competition. This year saw the return of the tardis and the introduction of the Noise [...]

(May 30, 2013) Read more

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

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.