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.

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

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

High-precision pressure sensor with RS485 digital output. Atmospheric pressure range (800 to 1200 hPa) is also available!

The pressure sensor 33X achieves an extremely high accuracy of 0.05% full scale (FS) in the temperature range of 10 to 40°C through a mathematical correction method. An additional option for high precision of 0.01% FS is also available. In addition to a digital RS485 interface, analog current or voltage outputs can be obtained. 【Features】 - Accuracy of ±0.05% FS in the temperature range of 10 to 40°C - Standard dual outputs of digital RS485 and analog output - Analog output can be range-adjusted via digital RS485 - Available in barometric range type (800–1200 hPa) and differential pressure range type (from 0–30 kPa to 0–3 MPa) - Temperature range of -20 to 125°C (optional -40°C also available) - Excellent long-term stability 【Technology】 - Piezo-resistive pressure sensor - Correction technology using a mathematical model to produce accurate pressure values

• Pressure

Ideal for measuring pulsations and unsteady behavior with a bandwidth of 50 kHz, temperature-resistant up to 180°C, built-in amplifier (0-10V output) high-precision pressure sensor.

The ultra-high-speed pressure sensor M5HB can measure not only static pressure but also pressure changes within a bandwidth of 0 to 50 kHz. This is achieved by the digital circuit continuously adjusting the analog signal in real-time, with an output of 0 to 10V. The compact sensor head with M5 fine thread can be used at temperatures up to 180°C. It has a pressure resistance of up to five times the measurement range and is an excellent model for vibration resistance. 【Features】 - Temperature resistance of the sensor head: 180°C - Output is an analog signal of 0 to 10V (with built-in amplifier) - Wide temperature compensation range: -20 to 125°C or -40 to 180°C - Bandwidth of 50kHz, ideal for measuring pulsations and unsteady behavior - Resistant to impacts and vibrations - Compact design, pressure connection is M5×0.5 fine thread

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±0.05% accuracy / Digital pressure gauge with logging function, explosion-proof type available

The high-precision digital pressure gauge LEO Record can record pressure and temperature for extended periods thanks to its memory function. The data logger can be connected to a computer via an RS485 interface for reading the recorded data. The current pressure value can be displayed in multiple pressure units. It is powered by a 3.6V lithium battery. An intrinsically safe explosion-proof type is also available. 【Features】 - Can record pressure and temperature for long periods - High precision (±0.05%FS @ 20–25 °C) - Ultra-low power consumption, long battery life - Can display in various pressure units (bar, mbar, hPa, kPa, MPa, PSI, kg/cm2, cmH2O, mH2O, etc.) - Zero point calibration via button - Intrinsically safe explosion-proof type available

• Pressure

[Speaker] Tadahiro Maruyama, Director of the Business Creation Division, Chubu Electric Power Co., Inc. (Also Deputy COO of Chuden Telemetering LLC) [Key Lecture Content] Chubu Electric Power is expanding telemetering through a smart meter communication network to gas and water services. In the next phase, we aim to integrate these accumulated data into a multi-infrastructure DX business, merging with energy and water services, and striving for a circular and sustainable community across our entire group. This time, I will explain the actual initiatives related to these efforts. [Lecture Items] 1. Automatic Meter Reading by Chubu Electric Power 2. Current Status of Chubu Electric Power's Telemetry Business 3. Business Transformation through Infrastructure DX in the Electric Power Sector 4. Horizontal Expansion of Infrastructure DX to Water Services 5. Smart City Services through Data Utilization 6. Q&A / Business Card Exchange

[Speaker] Daihei Yamamoto, CEO of F6 Design, Inc. Strategic Consultant / Data Scientist [Lecture Topics] 1. Why is it difficult for "self-driven talent" to emerge from Japanese workplaces? 2. Shifting to a "non-teaching teaching method" - How to change interactions with subordinates 3. Strengthening communication skills through WHI (Why-How-If) 4. Creating an environment that allows for "safe failures" and systems that support self-drive 5. Q&A

To learn more about solar cells, to understand measurement methods, to acquire know-how related to measurements, and to actually try using measuring instruments, we have established a "PV Technical Center" on our headquarters premises, which also serves as a showroom. This center provides support services in the field of measurements for solar power generation, addressing various questions and requests from customers. At the PV Technical Center, we hold PV seminars (free of charge). Please apply through the detailed application URL provided.

In recent years, many people have been facing the challenge of "how to ensure retention and quickly turn new employees into productive members" due to the difficulty in hiring new graduates and the diversification of the environment and values in which young employees have grown. In this seminar, we will introduce some key points of "OJT Leader Development" from the training of the public course "OJT Leader Development Course" scheduled for March next year, based on the know-how cultivated in actual OJT leader training. We will share points that can be immediately practiced in the field, and we look forward to your enthusiastic participation! *Please apply through our company website below. *We have prepared two dates. Please choose a date that is convenient for you. Date: December 17, 2025 (Wednesday) 12:00 PM - 1:00 PM Format: Zoom Webinar Cost: Free Application Deadline: December 15 (Monday) Capacity: 50 people *Registration will close once the capacity is reached. [Content] - Positive role recognition - Understanding the environment and values that have developed - Imagining the "ideal self" as an OJT leader - Skill set for development and more.

In recent years, many people have been facing the challenge of "how to ensure retention and quickly turn new employees into productive members" due to the difficulty in hiring new graduates and the diversification of the environment and values in which young employees have grown. In this seminar, we will introduce some key points of "OJT Leader Development," which is part of the public course "OJT Leader Development Course" scheduled for March next year, based on the know-how cultivated in actual OJT leader training. We will share points that can be immediately applied in the field, and we look forward to your enthusiastic participation! *Please apply through our company website below. *We have prepared two days for the schedule. Please choose a date that works best for you. Date: December 18, 2025 (Thursday) 14:00–15:00 Format: Zoom Webinar Cost: Free Application Deadline: December 15 (Monday) Capacity: 50 people *Registration will close as soon as we reach capacity. [Content] - Positive role recognition - Understanding the environment and values that have developed - Visualizing the "ideal self" as an OJT leader - Skill set for development and more.