How to select the right hydrogen detection technologies
Hydrogen is a versatile and promising energy source, but its safe use requires reliable detection technologies. With its small molecular size, odourless and colourless nature, and high flammability, hydrogen is nearly impossible to detect without specialised equipment. Undetected leaks can lead to catastrophic incidents, threatening lives, infrastructure, and the environment. Rapid and accurate leak detection is essential to prevent hazards, minimise costly interruptions, and safeguard operations. However, selecting the right detection technology can be challenging given the variety of options available.
Key factors for selecting hydrogen detection technologies
Choosing the right technology depends on understanding the unique demands of your application and environment. Here are the critical factors to consider:
Detection Technologies Available
Different hydrogen detection technologies offer distinct advantages.
Catalytic Bead Sensors (Pellistors): These detect hydrogen by measuring heat generated during combustion on a catalytic bead. While cost-effective, they may not perform well in low-oxygen environments or areas with multiple gases.
Electrochemical Sensors: These sensors measure the current from hydrogen’s electrochemical oxidation, providing high sensitivity but requiring regular calibration.
Semiconductor Sensors: Compact and affordable, these sensors measure changes in electrical resistance to detect hydrogen but may suffer from cross-sensitivity.
Infrared (IR) Sensors: IR sensors measure hydrogen concentrations using light absorption, offering excellent stability in harsh environments.
Thermal Conductivity Sensors: Ideal for detecting high hydrogen concentrations, these sensors measure changes in thermal conductivity but may lack the sensitivity needed for low-level leaks.
MPS (Molecular Property Spectrometer) Sensors: MPS sensors analyse the physical properties of gas molecules, delivering exceptional accuracy, stability, and resistance to cross-sensitivity. These sensors also require minimal maintenance, making them an optimal choice for modern applications.
Environmental and operational considerations
Your operating environment plays a crucial role in sensor performance, with factors such as temperature, humidity, cross-sensitivity, and explosion-proof requirements requiring careful consideration. It is essential to select sensors designed to maintain accuracy under your specific environmental conditions, particularly in varying temperature and humidity levels. In environments with multiple gases, choosing a technology that minimises interference from other substances is critical for reliable detection. Additionally, for hazardous areas, ensure the sensors meet safety standards for explosive environments to maintain compliance and safety.
Evaluating system sensitivity and accuracy
A detection system’s sensitivity indicates how effectively it can identify even the smallest amounts of hydrogen, while accuracy measures the consistency and reliability of those readings. Both qualities are critical, especially in industries where minor leaks can lead to severe safety hazards or where strict monitoring regulations are enforced.
Highly sensitive systems can detect small leaks quickly, helping to prevent escalation into larger, more dangerous issues. Equally important, an accurate system reduces the likelihood of false alarms and ensures that genuine leaks are not overlooked. Inaccurate systems can result in operational disruptions, wasted resources, or, worse, undetected hazards.
The reliability of a detection system is influenced by factors such as sensor quality, calibration protocols, and external conditions like temperature and humidity. Selecting a system that has been thoroughly tested under real-world conditions relevant to your application is vital.
Maintenance and compliance
The ease of installation and long-term maintenance requirements should factor into your decision. Crowcon’s MPS sensors, for example, minimise calibration needs, reducing downtime and total cost of ownership. Additionally, ensure that the chosen system complies with relevant industry regulations and safety standards.
Selecting the right hydrogen detection technology is critical for maintaining safety, protecting people and property, and ensuring uninterrupted operations. By evaluating your application’s requirements and leveraging technologies like Crowcon’s MPS sensors, you can confidently safeguard your hydrogen systems. Contact us today to learn how our solutions can meet your needs and help you stay ahead in hydrogen safety.
INDUSTRY INSIGHTS
Subscribe to get the
latest insights
in your inbox
Read about Crowcon‘s Privacy and Cookie policy here. If you change your mind, you can unsubscribe at any time