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  6. Keller Company Hydrogen Application Pressure Sensor Series 23SY-H2(Ei)

Keller Company Hydrogen Application Pressure Sensor Series 23SY-H2(Ei)

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last updated:Jan 10, 2025

KELLER Pressure Japan 日本支社
KELLER Pressure Japan 日本支社
  • Special site
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The pressure sensor for hydrogen applications has finally arrived!

The 23SY-H2(Ei) series is characterized by a low embrittlement rate due to an increased nickel content in the stainless steel used. The gold-plated diaphragm minimizes hydrogen diffusion. Additionally, the pressure sensor is compensated across the entire temperature range, providing excellent long-term stability. The 23SY-Ei-H2 series is a reliable solution equipped with long life, high precision, and safety, meeting various hydrogen requirements. 【Features】 〇 Adoption of stainless steel with increased nickel content as a measure against hydrogen embrittlement 〇 Use of gold-plated diaphragm widely used in hydrogen applications to minimize hydrogen diffusion 〇 Achieves ±0.7% accuracy within -10 to 80°C 〇 Excellent long-term stability 〇 Welded structure without internal seals 〇 Available in intrinsically safe explosion-proof type (23SY-Ei-H2)

    Pressure
23SY-H2.jpg

Keller Company Hydrogen Application Pressure Sensor Series 23SY-H2(Ei)

23SY-H2.jpg
23SY-H2.jpg
  • Related Link - https://keller-druck.com/ja/industries/oil-and-gas…
  • Special site - Product/service details - https://pr.mono.ipros.com/keller-druck/product/

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basic information

Pressure range: 0 to 0.4 MPa to 0 to 90 MPa Accuracy: ± 0.25 %FS Overall accuracy: ± 0.7 %FS @ -10 to 80 °C Output: 4 to 20 mA, 0 to 10 V Temperature range: -40 to 100 °C For hydrogen applications

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Applications/Examples of results

Hydrogen applications (e.g., hydrogen production, transportation, storage, gas stations)

catalog(6)

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Keller Company Hydrogen Application Pressure Sensor 23SY-H2

Keller Company Hydrogen Application Pressure Sensor 23SY-H2

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Keller Company Digital Pressure Gauge for Hydrogen Applications LEO-Record-H2

Keller Company Digital Pressure Gauge for Hydrogen Applications LEO-Record-H2

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Keller Company Small Pressure Sensor 23SY/25Y

Keller Company Small Pressure Sensor 23SY/25Y

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Keller Company intrinsic safety explosion-proof high-precision pressure sensor 33XEi/35XEi

Keller Company intrinsic safety explosion-proof high-precision pressure sensor 33XEi/35XEi

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Keller Company High-Precision Pressure Sensor 33X

Keller Company High-Precision Pressure Sensor 33X

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Keller Company Essential Safety Explosion-Proof Small Pressure Sensor 23SYEi/25Ei

Keller Company Essential Safety Explosion-Proof Small Pressure Sensor 23SYEi/25Ei

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News about this product(7)

KELLER will exhibit at the Hydrogen and Fuel Cell Expo! March 17-19, 2026 at Tokyo Big Sight, West Hall 2, W15-36.

  • Seminar・Event

KELLER is a top manufacturer of piezoresistive pressure sensors. Our specialists, with extensive experience, provide solutions tailored to your specific applications. We respond to the current topic of hydrogen with optimal and sustainable investment-worthy solutions. If you visit our booth, we will gladly answer any questions or concerns you may have about what pressure is, how we can help reduce manufacturing costs through collaboration, and even our A/D conversion processing technology. For those who wish to have meetings or product introductions at our booth on the day of the event, we are accepting reservations in advance. If you are interested, please contact us at sales.jp@keller-pressure.com. [Exhibition Content] 〇 Pressure sensors for hydrogen gas: 23SY-H2, 23SY-Ei-H2 (explosion-proof type) This model reduces hydrogen embrittlement rates and minimizes hydrogen diffusion. Detailed explanations can be found in the video linked below! 〇 A wide range of other pressure sensor lineup! - Low pressure and high pressure (0.5 to 200 MPa) - Low temperature to ultra-high temperature (-50 to 1000℃) - High precision - Miniature pressure sensors - Ultra-fast response - Digital pressure gauges

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Pressure Sensors in Hydrogen Engine Racing Cars - Hydrogen Innovation in Motorsports

  • Company news

Keller's pressure sensors play a crucial role in hydrogen engine-equipped racing cars. This is because extremely high precision and reliability are essential in hydrogen systems within motorsports. Keller's pressure sensors are used in fuel cell powertrains, supporting the precise monitoring and control of hydrogen and air circuits under harsh high-performance conditions. 〇 Hydrogen Loop Keller's pressure sensors monitor the flow of hydrogen within the fuel cell by measuring optimal pressure levels, contributing to the realization of efficient electrochemical reactions. 〇 Air Loop Accurate pressure measurement is essential for the optimal management of oxygen supply, which directly affects the efficiency and output of the fuel cell. 〇 High-Pressure Hydrogen Line Keller's pressure sensors are widely adopted in high-pressure hydrogen lines, as well as in hydrogen-powered test benches and onboard storage systems. In motorsports, reliability is paramount in a world where every second counts. Additionally, components that can withstand extreme pressures and rapid changes in load under harsh conditions are indispensable. Using Keller products, which boast the highest standards of precision and reliability and are made in Switzerland, is a testament to a deep commitment to quality. For more details, please refer to the related links below!

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Measuring the pressure of hydrogen - In the case of hydrogen fuel cells

  • Other・notification

Hydrogen poses a risk of leakage due to its status as the smallest molecule on Earth, which can lead to permeation. It also has highly flammable properties when exposed to air. Therefore, it is crucial to prevent leaks from hydrogen tanks or to detect them early. Keller's pressure sensors are used for leak testing in hydrogen fuel cells. The hydrogen fuel cell has three channels: one for air (oxygen), one for hydrogen, and one for cooling. Nitrogen is used first, followed by hydrogen, to detect leaks within the system. The pressure values at the inlet and outlet of the fuel cell are continuously recorded and displayed on the screen in real-time, allowing for ongoing monitoring. A drop in pressure indicates a leak in one of the three flow paths. Keller's pressure sensors have high accuracy, enabling them to detect leaks even in small areas that are not sealed, ensuring the safe use of fuel cells. For more details, please refer to the related materials below.

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KELLER will exhibit at the Hydrogen and Fuel Cell Exhibition! February 19-21, 2025, at Tokyo Big Sight, East Hall 1, E6-6.

  • Company news

KELLER is a leading manufacturer of piezoresistive pressure sensors. Our specialists, with extensive experience, provide solutions tailored to your specific applications. We respond to the current topic of hydrogen with optimal and sustainable investment-worthy solutions. If you visit our booth, we will gladly answer any questions or concerns you may have about what pressure is, how we can help reduce manufacturing costs through collaboration, and even our A/D conversion processing technology. For those wishing to have meetings or product introductions at our booth on the day of the event, we are accepting reservations in advance. If you are interested, please contact us at sales.jp@keller-pressure.com. 【Exhibition Contents】 〇 Pressure sensors for hydrogen gas: 23SY-H2, 23SY-Ei-H2 (explosion-proof type) These models reduce hydrogen embrittlement rates and minimize hydrogen diffusion. Detailed explanations can be found in the videos linked below! 〇 A wide range of other pressure sensor lineup! - Low pressure and high pressure (0.5 to 200 MPa) - Low temperature to ultra-high temperature (-50 to 1000°C) - High precision - Miniature pressure sensors - Ultra-fast response - Digital pressure gauges

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Company information

KELLER

KELLER Pressure Japan 日本支社

Machine elements and parts

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Our company is the Japanese branch of KELLER Pressure (Switzerland). Since its establishment, KELLER Pressure has developed and produced all its products at its factory in Winterthur, Switzerland, and is a leading manufacturer of pressure transducers and pressure transmitters, certified with ISO 9001. As a core business, we manufacture and sell over 1.3 million pressure measurement cells annually, offering products with pressure ranges from 5 mbar (500 Pa) to 2000 bar (200 MPa). With the extensive experience gained from all our products, our solutions can cater to a variety of applications. We are highly regarded as a manufacturer of high-precision pressure sensors and also accommodate OEM and custom products. We have received positive feedback from many customers. Contact: sales.jp@keller-pressure.com

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