First PEEK-Bodied pH Sensor in 12 mm Form Factor

Invensys Operations Management (USA) has introduced a family of high-performance, disposable pH sensors in the widely used 12 mm form factor. The new Foxboro(r) brand PH12 Series includes the process industry’s first polyetheretherketone (PEEK) bodied sensor, making it the most durable 12 mm pH sensor available anywhere. The PH12 family of electrochemical sensors also features advanced diagnostics, fast response, long life and high accuracy and stability.

"The 12 mm form factor is very popular, but users have not been able to take full advantage of many of the new developments that have improved the performance and longevity of pH sensors, especially the ruggedness and durability of PEEK materials together with flat membrane electrodes," said Joseph Downey, director, analytical product marketing for Invensys Operations Management. "The new PH12 family includes unique advances in sensor diagnostics, response time, accuracy and stability, all in a form factor that enables customers to improve their operations and control capability without needing to change mounting accessories."

The PH12 sensor family is available in the PEEK or a glass body, either of which is available with a high-performing flat, ruggedised glass pH electrode or a domed pH electrode. Temperature performance range is from minus 15oC up to 125oC, contributing to the ruggedness and length of service life. The PEEK-bodied sensor family also provides additional chemical resistance and durability.

A Nafion ion barrier in all PH12 family sensors protects the reference junction and a built-in, non-metallic (Kynar) solution ground, enables highly cost effective sensor diagnostics. Invensys is also offering a new selection of Foxboro FIT12 mounting accessories, including NPT, ANSI flange and sanitary versions with configurable dimensions, sensor protection and materials of construction.