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Gas sensors
Technical information for gas sensor design, from gas sensor basics to NDIR technology, CO₂ sensing, refrigerant leak detection, and standards compliance.
When designing gas sensors, it is important to understand the characteristics of the target gas, detection methods, optical design, signal processing, and application-specific requirements. In particular, for NDIR gas sensors, the selection of components such as infrared light sources, infrared sensors, and AFE ICs has a major impact on sensor performance and design flexibility. This page introduces technical resources by purpose, including the basics of CO₂ and flammable gases, the principles of the NDIR method, IAQ (Indoor Air Quality), HVAC (Heating, Ventilation and Air Conditioning), and refrigerant detection. For technical resources with white papers, you can download detailed materials for further information.
CO₂ and Air Quality Sensing Basics
Technical information on CO₂ concentration measurement, indoor air quality, and ventilation control. These resources are useful for designing IAQ, HVAC, and air quality monitoring applications.
What is CO₂?
Explains the basic characteristics of CO₂, its effects on the human body, and its application to occupancy and vacancy detection. This helps explain why CO₂ concentration measurement is important for indoor air quality and ventilation control.
Leading the Air of Tomorrow
A technical resource on HVAC and ventilation control, and indoor air quality. It explains how CO₂ sensing can support comfort, energy saving, and ventilation control.
Visualizing air stagnation with CO₂ sensors
A technical resource for visualizing CO₂ concentration distribution and understanding uneven ventilation or stagnant air. It is useful when considering IAQ, air quality monitors, and ventilation control.
NDIR method and Sensor Design Basics
Technical resources for understanding gas sensor detection methods and the principles of the NDIR method. These materials can be used as foundational knowledge for gas sensor design, including infrared light sources, light-receiving elements, and signal processing.
Gas Sensor types and mechanisms
Explains major gas sensor types and differences in detection methods. This is basic information for considering a detection method suitable for your application, such as NDIR, semiconductor, and electrochemical methods.
What is NDIR (Non-Dispersive Infrared)?
Explains the basic principles and structure of the NDIR method. Understanding infrared light sources, infrared sensors, optical design, and signal processing using AFE ICs is useful when considering gas sensor design.
Flammable Refrigerants and Refrigerant Leak Detection
Technical information on flammable refrigerants such as R32 and R454A/B/C, natural refrigerants, and refrigerant leak detection. Recommended for those considering safety design for air conditioners, heat pumps, and refrigeration equipment.
Types and Features of Flammable Gases
Explains the types and characteristics of flammable gases. It helps you understand the characteristics of target gases required when considering refrigerant leak detection, gas leak detection, and safety design.
Trends in Natural Refrigerants
A technical resource summarizing the shift toward low-GWP and natural refrigerants, and the challenges of using flammable refrigerants. It is useful when considering refrigerant detection and HVAC equipment design.
Natural Refrigerant R290 and NDIR
A technical resource explaining why the NDIR method is suitable for detecting R290 leaks. It can be used when considering detection methods and sensor design required for refrigerant detection.
Standards Compliance and Safety Design
Technical information on standards compliance and system design for air conditioning and refrigeration equipment that uses flammable refrigerants. Recommended for those considering compliance with applicable standards.
Points of building air conditioning equipment in compliance with IEC/UL 60335-2-40
A technical resource for those considering safety design and standards compliance for air conditioning equipment that uses flammable refrigerants. It explains key points for system design related to IEC/UL 60335-2-40.
Inquiries about gas sensors
Please contact us for questions about products, samples, and technical matters, as well as consultation, quotations, and purchasing.