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Using sound waves to create an acoustic “fingerprint” of liquid concentrations

‘Stainless steel surfaces, from matte to shiny’ is the company motto at Swiss-based Hug Oberflächentechnik AG. The company has been treating stainless steel products for more than 40 years and specializes in pickling, electropolishing and passivation.

To achieve an optimal result, the concentration of the solutions used in the treating process must be precisely determined. Specialists at the company traditionally measured these values with the help of a hydrometer in the passivation baths, then read and documented the result – a tedious and error-prone method that is now a thing of the past thanks to the Teqwave T from Endress+Hauser.

“The Teqwave T from Endress+Hauser fully met our expectations with respect to functionality, performance and engineering design.”

Managing Director Marcel Hug of Hug Oberflächentechnik AG.

This portable instrument precisely measures the concentrations in liquids in real time by means of so-called surface acoustic waves and automatically documents the results. Now even employees without specialist knowledge can easily and efficiently test multiple passivation and degreasing baths in succession. Managing Director Marcel Hug is enthusiastic about the innovation. “The Teqwave T from Endress+Hauser fully met our expectations with respect to functionality, performance and engineering design.”

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