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Latest version of the Optimus+ Sound Level Meter receives PTB Approval

Latest version of the Optimus+ Sound Level Meter receives PTB Approval

We are delighted to announce that the latest version of the Optimus+ sound level meter, with the newest firmware and features, has achieved PTB pattern approval.

This means that the Optimus+ sound level meter has been independently verified as meeting the highest standard in noise measurement!

The Physikalisch-Technische Bundesanstalt (PTB) is the German Metrology Institute, and is recognised as one of the most prestigious national test laboratories in the world.

After a series of detailed tests which include both electrical and acoustic verification, approval numbers have been issued for our Optimus+ sound level meters with firmware v5.8.3251!

You can view our certificate here.

What is PTB Pattern Approval?

Pattern Approval, or Type Approval, is a method where a test laboratory such as the PTB tests an instrument against a set of standard tests to ensure that it meets the performance claims of the manufacturer.

Find out more about PTB Approval here.

Jaymee-lee Tolliday
Jaymee-lee Tolliday
Marketing Coordinator

Jaymee-Lee is the Marketing Coordinator at Cirrus Research plc, from managing our English social media platforms and email campaigns to crafting compelling content, she is behind all marketing initiatives across our global markets.

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