Development of Volumetric and Manometric Hydrogen Gas Sensors for Measuring Gas Emission and Diffusivity in H2 Charged Polymers
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Hydrogen gas sensors are important for industrial safety, environmental monitoring, and the gas industry. They detecthydrogen levels in the environment, ensuring safety and efficiency by providing accurate measurements. They are designed to behighly sensitive, stable, and reliable, and often require cost-effectiveness, fast response times, and compact designs. However, for certainpurposes, high-performance H2 gas sensors are required. Therefore, we developed two types of hydrogen gas sensors to meetthese requirements. These sensors comprise volumetric and manometric types, which operate based on the principles of volume andpressure measurements, respectively. Measured values such as H2 uptake, solubility, and diffusivity in H2 gas-charged polymers inhigh-pressure environments were obtained using these gas sensors. The sensors respond instantly within one second and measure gasconcentrations from 0.1 wt·ppm to 1500 wt·ppm with adjustable sensitivity, resolution, and measurement range. Performance testsof the two sensors confirmed their reliability, adjustable measurement range, and stability against temperature and pressure variations. As a result, this sensing system enabled real-time detection and characterization of gas transport properties for H2 gas, making it suitablefor high-pressure hydrogen gas applications.
Abstract
Hydrogen gas sensors are important for industrial safety, environmental monitoring, and the gas industry. They detecthydrogen levels in the environment, ensuring safety and efficiency by providing accurate measurements. They are designed to behighly sensitive, stable, and reliable, and often require cost-effectiveness, fast response times, and compact designs. However, for certainpurposes, high-performance H2 gas sensors are required. Therefore, we developed two types of hydrogen gas sensors to meetthese requirements. These sensors comprise volumetric and manometric types, which operate based on the principles of volume andpressure measurements, respectively. Measured values such as H2 uptake, solubility, and diffusivity in H2 gas-charged polymers inhigh-pressure environments were obtained using these gas sensors. The sensors respond instantly within one second and measure gasconcentrations from 0.1 wt·ppm to 1500 wt·ppm with adjustable sensitivity, resolution, and measurement range. Performance testsof the two sensors confirmed their reliability, adjustable measurement range, and stability against temperature and pressure variations. As a result, this sensing system enabled real-time detection and characterization of gas transport properties for H2 gas, making it suitablefor high-pressure hydrogen gas applications.