Explosion risk in industrial environments rarely originates from a single fault. It typically begins with a release of combustible gas and increases when detection does not occur quickly enough to trigger protective action. End-to-end explosion risk mitigation links gas detection directly to automated decision-making and predefined mitigation actions, ensuring that rising gas concentrations enable ventilation, electrical isolation, fuel shutoff, and controlled process shutdowns. Catalytic sensor gas detection and infrared gas detection deliver critical data that allow safety systems to respond early, apply logic precisely, and maintain control before explosive atmospheres can develop.
Catalytic Gas Detection
Catalytic gas detection is used to measure combustible gases in air. It works by producing a signal that increases as gas concentration rises, allowing safety systems to monitor how close the gas concentration is to the Lower Explosive Limit (LEL). The direct relationship between gas presence and sensor output makes catalytic gas detection a practical choice for industrial environments, including process areas where gas types, operating conditions, or potential leak sources may vary over time. Catalytic sensors can detect a wide range of gases, including hydrocarbons as well as inorganic gases such as hydrogen and ammonia. This broad sensitivity ensures that gas releases are detected regardless of chemical type and supports consistent awareness across the detection system as operating conditions and gas compositions change.
Rising gas concentrations can be managed through a clearly defined response stage with the application of catalytic gas detection. The linear relationship (up to 100% LEL) between sensor output and concentration allows alarm thresholds and response points to be set with precision. Ventilation can be initiated at low percentages of the LEL with escalation to alarms, electrical isolation, fuel shutoff, or controlled process shutdowns as levels continue to rise. The ability to deploy catalytic sensors cost-effectively across large areas strengthens coverage, shortens the time between gas release and detection, and reduces the likelihood that leaks will progress unnoticed before mitigation begins.
Infrared Gas Detection
Infrared gas detection complements catalytic technology by providing reliable gas measurement with built-in fault indication. It uses optical absorption instead of chemical reaction, and so is able to maintain consistent performance in harsh industrial environments, including areas where oxygen levels fluctuate or are intentionally reduced. This makes infrared gas detection suitable for enclosed process areas, storage zones, and inerted systems where oxygen-dependent detection technologies may lose reliability.
A key advantage of applying infrared gas detection to explosion risk mitigation is its fail-safe operation. If the optical path of the infrared gas detector becomes blocked or the internal light source degrades, the detector identifies the problem immediately and reports it as a fault. Therefore, a loss of detection cannot occur without being noticed. Operators retain clear visibility of detector status, allowing faults or degradation to be identified without delay. Long-term resistance to chemical contamination further supports stable operation over extended service life with minimal maintenance demands.
How End-to-End Explosion Risk Mitigation is Achieved
Applying catalytic sensor gas detection and infrared gas detection together within a single detection-to-response framework is key to end-to-end explosion risk mitigation:
- Early identification of gas release across all operating areas- Catalytic sensor gas detection and infrared gas detection are deployed according to environment and gas type so that combustible gas releases are detected immediately, whether they occur in open, oxygen-rich process areas or in enclosed, inerted, or oxygen controlled systems.
- Continuous tracking of escalation toward the explosive range- Both detection technologies provide continuous measurement relative to the LEL, allowing safety systems to track how gas concentrations increase over time rather than relying on single alarm points.
- Direct conversion of detection into mitigation decisions- Gas concentration signals from catalytic and infrared detectors are evaluated using common response logic, ensuring that mitigation actions are triggered by measured explosion instead of detector type or location.
- Progressive reduction of explosion risk as concentrations rise- Defined thresholds initiate staged responses that actively reduce risk, including ventilation or extraction to dilute gas, followed by alarms, electrical isolation, fuel shutoff, and controlled process shutdowns before ignition conditions can develop.
- Maintained mitigation capability during all operating states- Infrared gas detection sustains monitoring in inerted or oxygen-controlled systems during normal production, while catalytic gas detection ensures visibility during start-up, maintenance, or upset conditions, preventing gaps in protection as operating modes change.
- Prevention of undetected loss of protective function- Catalytic sensors provide continuous concentration response across a broad gas range and infrared detectors explicitly report optical faults, ensuring that any loss of detection capability is identified before mitigation is affected.
By linking early detection, concentration-based evaluation, and proportionate mitigation, explosion risk can be managed as a continuous process rather than a series of isolated safety actions. Catalytic sensor gas detection and infrared gas detection remain active from the moment a gas release occurs through to controlled risk reduction. The outcome is a protection strategy that responds predictably as conditions change, maintains coverage across all operating states, and limits escalation before explosive atmospheres can form.
Delivering End-to-End Explosion Risk Mitigation
Catalytic sensor gas detection and infrared gas detection deliver their greatest value when they are selected, positioned, and integrated to support end-to-end explosion risk mitigation across an industrial facility. Duran Electrónica's DURTEX catalytic range and DIREX infrared range are engineered to operate as high-integrity explosive gas detector solutions within complex industrial safety systems. Our specialists work with operators to assess explosion risk, define detection requirements, and design gas detection systems tailored to the specific conditions of each facility. Contact us today to find out more about our products and define your explosion risk mitigation strategy.