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

PTB Approval certificate

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.

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