With their long service life and high level of accuracy, the pressure transmitters in KELLER’s 23SY-H2 series and their intrinsically safe ATEX counterparts in the 23SY-Ei-H2 range provide a reliable solution for all hydrogen applications.

The 23SY-H2 series is distinguished by its low embrittlement rate, which is due to the high nickel content of the stainless steel used to manufacture the transmitters. What’s more, the gold-plated diaphragm ensures that hydrogen diffusion is reduced to a minimum.
The pressure transmitters are compensated over the entire temperature range and offer exceptional long-term stability.

KELLER series 23SY-H2 and 23SY-Ei-H2 pressure transmitters are used in a wide range of fields, including hydrogen generation and production, in transportation, in the monitoring of hydrogen refuelling stations and in the containment and storage of hydrogen.