PESO Certified UV/IR Flame Detectors: Reducing False Fire Alarms in Hydrogen/Hazardous Areas

Pyrotech Technologies Pvt. Ltd. is a trusted Indian manufacturer of industrial safety and hazardous-area monitoring solutions. With extensive expertise in flame detection, fire alarm systems, and process safety, Pyrotech delivers PESO-certified equipment designed for explosive atmospheres and high-risk industries such as hydrogen plants, oil & gas refineries, petrochemical facilities, power plants, and chemical processing units. Their solutions are engineered to meet national and international safety standards, ensuring reliable fire detection, regulatory compliance, and uninterrupted industrial operations.

What is UV/IR Flame Detection?

UV/IR flame detection is an advanced dual-spectrum technology that uses ultraviolet (UV) and infrared (IR) sensors to detect the unique radiation signature emitted during combustion. By analysing both wavelengths simultaneously, UV/IR flame detectors accurately distinguish real fires from false alarm sources such as sunlight, welding arcs, lightning, and hot machinery surfaces. The UV sensor identifies short-wave radiation present in the early stages of flame formation, while the IR sensor monitors heat patterns and flame flicker frequency. Intelligent signal processing validates both inputs before triggering an alarm, ensuring fast response, high accuracy, and immunity to nuisance alarms in hazardous industrial environments.

Benefits of UV/IR Flame Detectors for Industrial Safety

• Rapid hydrogen flame detection – Detects nearly invisible hydrogen fires within milliseconds.
• False alarm reduction – Dual-spectrum verification prevents nuisance trips caused by non-fire radiation.
• Explosion-proof safety – Suitable for hazardous areas classified as Zone 1 and Zone 2.
• Wide coverage area – Reduces the number of detectors required in large industrial spaces.
• Improved operational continuity – Prevents costly shutdowns and production losses.

Industries handling flammable gases and volatile chemicals rely on UV/IR flame detectors to enhance fire safety and maintain compliance with hazardous area regulations.

How Pyrotech UV/IR Flame Detectors Minimise Fire Risk

In hydrogen and hazardous environments, early and accurate flame detection is critical to preventing catastrophic incidents. Pyrotech’s PESO-certified UV/IR flame detectors provide reliable risk mitigation by detecting invisible hydrogen flames that emit strong UV radiation but minimal visible light. Advanced signal processing filters out false alarm sources such as arc welding, lightning, sunlight reflections, and hot equipment, ensuring operational stability and reducing unnecessary shutdowns.

These detectors are approved for explosive atmospheres found in hydrogen storage facilities, refineries, LNG terminals, and chemical plants, helping industries maintain regulatory compliance and safe operations. Early detection enables immediate activation of fire suppression systems, rapid evacuation, and reduced asset damage. Built with rugged materials, Pyrotech detectors perform reliably in harsh conditions, including high temperatures, dust, corrosive atmospheres, and outdoor industrial installations.

Industries That Benefit from UV/IR Flame Detection

• Hydrogen production and storage facilities
• Oil & gas refineries and petrochemical plants
• LNG terminals and fuel handling stations
• Chemical processing and fertiliser plants
• Power generation and battery manufacturing units

These sectors require fast, accurate and explosion proof flame detection to protect personnel, assets, and continuous operations.

Frequently Asked Questions (FAQs)

1. Why are UV/IR flame detectors ideal for hydrogen facilities?

Hydrogen flames are nearly invisible and burn rapidly. UV/IR detectors identify their radiation signature instantly, ensuring early detection and improved safety.

2. How do UV/IR detectors reduce false fire alarms?

By verifying both UV and IR signals, the system distinguishes real flames from non-fire radiation sources, significantly reducing nuisance alarms.

3. What does PESO certification indicate?

PESO certification confirms that the equipment is safe for use in explosive atmospheres and compliant with Indian hazardous area regulations.

4. Where can UV/IR flame detectors be installed?

They are suitable for hazardous areas such as hydrogen plants, refineries, LNG terminals, chemical units, and other high-risk industrial environments.

5. How fast do UV/IR flame detectors respond?

They detect flames within milliseconds, enabling immediate safety actions and minimising fire-related damage.