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  6. Keller Company Pressure Sensor Series 21Y

Keller Company Pressure Sensor Series 21Y

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last updated:May 09, 2025

KELLER Pressure Japan 日本支社
KELLER Pressure Japan 日本支社
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Ultra-compact pressure sensor with a minimum diameter of 17mm, covering from 0 to 200kPa up to 0 to 100MPa!

The pressure sensor series 21Y features a welded structure that does not use internal seals. It has an insulation voltage of 300VDC, making it less susceptible to disturbances. A temperature sensor is integrated into the circuit to correct output errors caused by temperature changes, resulting in improved overall accuracy and TEB. 【Features】 • Wide range of temperature compensation • Ultra-compact, ideal for applications with limited installation space • Robust SUS housing • Excellent long-term stability 【Technology】 • Piezo-resistive pressure sensor • Welded structure without internal seals • Compact with analog output: 4–20mA, 0–10V, etc.

    Pressure
21Y.jpg

Keller Company Pressure Sensor Series 21Y

21Y.jpg
21Y.jpg
  • Series 21Y
  • Special site - Product/service details - https://pr.mono.ipros.com/keller-druck/product/

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basic information

Pressure range: 0 to 200 kPa to 0 to 100 MPa Accuracy: ± 0.5 %FS Overall accuracy: ± 1.5 %FS @ -10 to 80 °C Output: 4 to 20 mA, 0 to 10 V, 0.5 to 4.5 V Temperature range: -40 to 100 °C

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Applications/Examples of results

Small-scale use

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Keller Company Ultra-Compact Pressure Sensor 21Y

Keller Company Ultra-Compact Pressure Sensor 21Y

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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 Small Pressure Sensor 23SY/25Y

Keller Company Small Pressure Sensor 23SY/25Y

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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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News about this product(8)

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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Pressure sensors monitor liquid propulsion rockets!

  • Company news

The "TU Vienna Space Team," operated by students of the Vienna University of Technology, is working on the rocket project "Lamarr," which focuses on launching a liquid rocket using ethanol and liquid oxygen as propellants. The "Lamarr" rocket is equipped with pressure sensors from KELLER Pressure, specifically the PAA-23SY, PAA-21Y, and PD-39X series. These high-precision pressure sensors play a crucial role in ensuring the smooth progress of the mission. The pressure sensors measure the pressure in the pressurized tanks, fuel tanks, and combustion chamber of the rocket engine. The project team uses the measurement data supplied by the sensors to monitor and control various elements essential for stable flight. Pressure measurement technology in the aerospace field complies with the highest safety standards and has high demands for functionality. Therefore, in this field, highly specialized pressure measurement systems tailored to each customer are produced. For the "Lamarr" project, the KELLER Pressure standard specification piezoresistive pressure transmitters were selected. For more details, please follow the link below!

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KELLER will exhibit at the International Space Business Expo SPEXA! July 30 to August 1, 2025, at Tokyo Big Sight, South Hall 3, S4-2.

  • Seminar・Event

KELLER Pressure is a leading manufacturer of piezoresistive pressure sensors. We are showcasing high-precision pressure sensors, compact pressure sensors, and high-speed response pressure sensors, including pressure sensors and digital pressure gauges with proven performance 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 our 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 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 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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Phone number/address

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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