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  6. Keller Company Pressure Sensor Series 23SY/25Y

Keller Company Pressure Sensor Series 23SY/25Y

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last updated:Sep 18, 2025

KELLER Pressure Japan 日本支社
KELLER Pressure Japan 日本支社
  • Special site
  • Official site

Small pressure sensor with welded structure covering from 0 to 10 kPa up to 0 to 100 MPa!

The welded structure small pressure sensor 23SY/25Y is designed to meet the advanced and diverse requirements of industrial applications, including pressure range, pressure connection, output signal, and electrical connection (25Y features a flush diaphragm structure). The modular concept allows for high flexibility in specifications and enables quick response times. A temperature sensor is integrated into the circuit, correcting errors caused by temperature changes and contributing to improved overall accuracy. We can also offer intrinsically safe explosion-proof types 23SYEi and 25YEi. 【Features】 - Wide temperature compensation: ± 0.7 %FS @ -10 ~ 80℃ - Minimum pressure range starting from 10 kPa - Excellent long-term stability - Robust SUS housing - Option: Intrinsically safe explosion-proof type (23SY-Ei) 【Technology】 - Piezo-resistive pressure sensor - Welded structure without internal seals - Analog output: 4 ~ 20 mA, 0 ~ 5 V, 0 ~ 10 V, etc.

    Pressure
23SY完成.jpg

Keller Company Pressure Sensor Series 23SY/25Y

23SY完成.jpg
23SY完成.jpg
  • Series 23SY
  • Special site - Product/service details - https://pr.mono.ipros.com/keller-druck/product/

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basic information

Pressure range: 0 to 10 kPa to 0 to 100 MPa Accuracy: ± 0.25 %FS Overall accuracy: ± 0.7 %FS @ -10 to 80 °C Output: 4 to 20 mA, 0 to 5V, 0 to 10 V, 0.5 to 4.5V Temperature range: -40 to 100 °C

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Applications/Examples of results

Engine test bench Industrial and automation applications Hydraulic measurement

catalog(5)

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Keller Company Small Pressure Sensor 23SY/25Y

Keller Company Small Pressure Sensor 23SY/25Y

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Keller Company Ultra-Compact Pressure Sensor 21Y

Keller Company Ultra-Compact Pressure Sensor 21Y

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Keller Company ultra-compact pressure sensor 21C, 5V drive with 0.5 to 4.5V output.

Keller Company ultra-compact pressure sensor 21C, 5V drive with 0.5 to 4.5V output.

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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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Keller Company Low Pressure Pressure Sensor 41X

Keller Company Low Pressure Pressure Sensor 41X

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News about this product(9)

KELLER Pressure will exhibit at the Sewer Exhibition '26 in Tokyo! From August 4 to August 7, 2026, at Tokyo Big Sight, West Hall 1, Booth 1-702.

  • Seminar・Event

KELLER Pressure offers immersion-type high-precision level gauges that cater to a wide variety of applications. Optimized housing and cable designs tailored to specific applications and environments ensure reliable measurements even under harsh conditions. All piezoresistive level gauges are developed, manufactured, and calibrated at the headquarters in Winterthur, Switzerland, boasting Swiss quality and high precision that have been proven over many years. They not only achieve stable performance without the need for maintenance over long periods but also support various commonly used interfaces, enabling optimal integration and communication with systems. In particular, products compatible with RS485 are ideal for battery-operated and remote control systems in environmental measurement and water-related fields.

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KELLER Pressure will exhibit at the Sewer Exhibition '26 in Tokyo! From August 4 to August 7, 2026, at Tokyo Big Sight, West Hall 1, Booth 1-702.

  • Company news

KELLER Pressure offers immersion-type high-precision level gauges suitable for a wide range of applications. Optimized housing and cable designs tailored to specific applications and environments ensure reliable measurements even under harsh conditions. All piezoresistive level gauges are developed, manufactured, and calibrated at the headquarters in Winterthur, Switzerland, boasting Swiss quality and high precision that have been proven over many years. They not only achieve stable performance with no maintenance required for long periods but also support various commonly used interfaces, enabling optimal integration and communication with systems. In particular, products compatible with RS485 are ideal for battery-operated and remote control systems in environmental measurement and water-related fields.

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KELLER will exhibit at the International Space Business Expo SPEXA! May 27-29, 2026, at Tokyo Big Sight, South Hall 3-4, S8-40.

  • Company news

KELLER Pressure is a leading manufacturer of piezoresistive pressure sensors. We will showcase high-precision pressure sensors, compact pressure sensors, and high-speed response pressure sensors with the specifications listed below, focusing on pressure sensors and digital pressure gauges that have a proven track record in the aerospace and aviation fields. We will explain why KELLER Pressure products are chosen in the aerospace and aviation sectors and what sets them apart from competitors using the exhibited products. 【Example of Achievements】 Rocket (fuel, oxidizer), satellites (atmospheric pressure measurement during re-entry), combustion pressure measurement, aircraft attitude control, detonation, International Space Station (ISS), etc. 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. Interested parties can contact us at sales.jp@keller-pressure.com. 【Exhibition Content】 We offer a variety of pressure sensors suitable for a wide range of measurements:  〇 Low pressure to high pressure (0.5 kPa to 200 MPa)  〇 Low temperature to ultra-high temperature (-50℃ to 1000℃)  〇 High precision (± 0.01%FS and above)  〇 Compact (Φ 1.4 x 3.1 cm and above)  〇 Ultra-fast response  〇 Digital display pressure gauges

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KELLER will exhibit at the International Space Business Expo SPEXA! May 27-29, 2026, at Tokyo Big Sight, South Hall 3-4, S8-40.

  • Seminar・Event

KELLER Pressure is a leading manufacturer of piezoresistive pressure sensors. We will showcase high-precision pressure sensors, compact pressure sensors, and high-speed response pressure sensors with the specifications listed below, focusing on pressure sensors and digital pressure gauges that have a proven track record in the aerospace sector. We will explain why KELLER Pressure products are chosen in the aerospace field and what sets them apart from competitors using the displayed products. [Example of Achievements] Rocket (fuel, oxidizer), satellites (atmospheric pressure measurement during atmospheric entry), combustion pressure measurement, aircraft attitude control, detonation, International Space Station (ISS), etc. 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. Interested parties can contact us at sales.jp@keller-pressure.com. [Exhibition Content] We offer a variety of pressure sensors suitable for a wide range of measurements: - Low pressure to high pressure (0.5 kPa to 200 MPa) - Low temperature to ultra-high temperature (-50°C to 1000°C) - High precision (± 0.01% FS and above) - Compact (Φ 1.4 x 3.1 cm and above) - Ultra-fast response - Digital display pressure gauges

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Companynews list (45)

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

Product/Service List (107)

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