Keller Company Pressure Sensor Series 23SY/25Y
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.
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
Price range
Delivery Time
Applications/Examples of results
Engine test bench Industrial and automation applications Hydraulic measurement
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News about this product（4）
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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.
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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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.
KELLER Pressure is a leading manufacturer of piezoresistive pressure sensors. We will showcase high-precision pressure sensors, compact pressure sensors, and fast-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 other companies using the displayed products. [Example of Achievements] Rockets (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. 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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KELLER pressure sensors with a strong track record in the aerospace field!
KELLER Pressure has been supplying pressure sensors to a wide range of sectors in the aerospace industry since 1997, and its pressure measurement technology has proven its reliability over hundreds of thousands of hours of flight. Reliability is paramount in the aerospace field, and the products used have proven themselves in this regard. 【Example of Achievements: Space Sector】 - Rockets (fuel, oxidizer) - Satellites (barometric measurement during atmospheric entry) - Combustion pressure measurement - Aircraft attitude control - Detonation - International Space Station (ISS) 【Example of Achievements: Aviation Sector】 - Pressure control in the cabin - Hydraulic distributors and filters - Valve control - Fuel pumps - Refueling systems - Air conditioning systems - Ventilation - Emergency oxygen supply to pilots You can see how different each application is and how broad the demands for pressure measurement technology are. Custom solutions are possible, but KELLER's strength lies in its many achievements with standard catalog products. This significantly improves parts procurement and management, costs, and delivery times. Please feel free to consult with KELLER, which has strong expertise in the aerospace field!
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Sudden and Instantaneous Pressure Rise in a Closed System: Underestimated Risks and Their Mitigation Methods
Pressure peaks in closed systems can cause significant damage and are complex phenomena. But what exactly is a pressure peak? How does it occur, and how can we protect the system from pressure peaks? We will explain the role of precise measurements in ensuring the safety and efficiency of pressure systems. 1. What is a pressure peak? Why does it occur? The physical principles behind the phenomenon are Newton's three laws of motion and Bernoulli's principle. What causes water hammer and cavitation, and what are their effects? 2. Preventive measures Using simulations, protective components such as pressure dampers, pressure reducers, and check valves, as well as pressure sensors. 3. Why are pressure sensors necessary to protect the system from pressure peaks? Continuous monitoring with sensors allows for real-time recording of pressure peaks and can trigger automatic responses such as valve opening and closing. In the event of a failure of system components or protective devices, it can not only be directly detected but also prevented. Alarms can be automatically sent to responsible personnel via email, IoT, cloud, etc., in case of anomalies. For more details, please refer to the related links below!
