Hydrogen Pressure Measurement

KELLER 23SY-H2/23SY-Ei-H2: Pressure transmitter for hydrogen applications

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 refueling stations and in the containment and storage of hydrogen. 
 
The KELLER 23SY-H2 series offers:

• Different accuracy classes per field of application
• Selected stainless steel alloy for minimal material embrittlement
• Gold-plated diaphragm for reduced hydrogen diffusion 
• Metallically sealed process connections
• Fully welded design to prevent hydrogen leakages 
• No elastomers in contact with the measuring medium
• Excellent long-term stability and longevity
• Intrinsically safe ATEX version available

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