Creating new products
High-response CO2 sensor suitable for high-temperature and high-humidity environments
Overview of products under development
NGK INSULATORS is currently developing a compact CO2 sensor capable of measuring CO2 and H2O concentrations in exhaust gases from vehicles and industrial plants. Leveraging ceramic technologies cultivated through the development of automotive NOx sensors, this sensor enables real-time, high-precision CO2 measurements, even in high-temperature and high-humidity environments.
By enabling CO2 monitoring in various applications such as vehicles and manufacturing processes, this sensor will contribute to CCS (Carbon Dioxide Capture and Storage) and CCU (Carbon Dioxide Capture and Utilization) initiatives.
Features of the CO2 sensor
Simultaneous High-Precision Measurements of CO2 and H2O
The sensor enables accurate simultaneous measurements of CO2 and H2O concentrations free of any cross-interference between the gases. Unlike many conventional gas analyzers, it performs reliably even in gas environments that contain water vapor, eliminating the need for dehumidification or other pretreatment processes.
Effective Emissions Monitoring in Harsh High-Temperature, High-Humidity Environments
Thanks to its ceramic construction, the sensor offers excellent resistance to vibration and corrosion, making it ideal for use in extreme conditions—from sub-zero temperatures to high-temperature combustion exhaust. Compared to conventional optical analyzers, it enables direct, rapid measurement.
This capability supports real-time feedback control in industrial plants and allows effective monitoring of gas emissions in manufacturing facilities.
Basic Specifications (Tentative)
| Measurement Range (CO2 and H2O) | Up to roughly 30% |
|---|---|
| Measurement Accuracy* | ±5% rdg. |
| Operating Temperature Range | –40℃ to 950℃ |
Depends on measurement conditions
CO2 Measurement Accuracy
Gas composition: CO2=0–20%, H2O=3%, N2 balance
(dashed lines indicate ±5% accuracy)
H2O Measurement Accuracy
Gas composition: CO2=0%,H2O=0–20%, N2 balance
(dashed lines indicate ±5% accuracy)
Developing CO2 Sensors to Contribute to a Carbon-Neutral Society
The NGK Group is actively developing and providing products and services that support the realization of a carbon-neutral (CN) society. As part of these efforts, we’re developing CO2 sensors that allow accurate monitoring and management of carbon dioxide emissions.
By applying these sensors to various CCS (Carbon Dioxide Capture and Storage) and CCU (Carbon Dioxide Capture and Utilization) processes, we’re making it possible to visualize greenhouse gas emissions, thereby helping to optimize manufacturing processes and emissions reductions.
Target Applications
- Measurement of CO2 in combustion exhaust gases
- Monitoring CO2 capture volumes for CO2 capture systems
Related Products
The NGK Group is also advancing with the development of the following and related technologies:
Ceramics for Direct Air Capture (DAC): Materials that adsorb and recover CO2 directly from the atmosphere
Sub-nano Ceramic Membranes: Advanced membranes capable of separating specific gases or liquids from mixed gases or liquids at the molecular level
Inquiry about Research & Developments
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