Walsn’s Flame Detectors: Intelligent Protection for Reliable Combustion

With deep peak regulation, low-NOx combustion, and variable coal quality becoming the norm, the risks of boiler flameout, deflagration, and secondary combustion are greatly amplified. Drawing on years of expertise in boiler safety sensing, Walsn offers a complete range of flame detection systems—including explosion-proof, integral, and remote types—to meet diverse requirements across petrochemical, metallurgical, power generation, and other industries. Among them, the full-spectrum explosion-proof FD-300 has achieved TÜV SIL3 functional safety certification. Additionally, models FD-300, FSE-100, and FDE-601 are certified Ex d IIC T6 Gb, enabling stable operation in explosive gas atmospheres.

Broad-Spectrum Detection, Full Coverage
Walsn’s flame detectors feature a wide spectral response covering ultraviolet, visible, and infrared bands. They accurately capture flame signals from oil, coal, natural gas, and other fuels, adapting to various fuel types and complex operating conditions.

Intelligent Self-Check, Sustained Safety
This function enables detectors to perform real-time self-diagnostics and trigger fault alarms immediately upon any abnormality, keeping them working optimally at all times. This delivers sustained, reliable flame monitoring and eliminates potential risks.

Multiple Models for Flexible Adaptation
The FS-100 Integral Flame Detector features a compact design and easy installation, making it suitable for utility boilers, fluidized bed boilers, and various industrial furnaces. Its eight intelligent parameter files enable automatic adjustment for precise detection under different conditions.

The FDS-600 Remote Flame Detector consists of the FDS-601 probe and FDS-602 control unit. Its remote design supports distant installation and maintenance, while a logarithmic converter expands the signal dynamic range, making it ideal for high-temperature, high-humidity environments.

The FSE-100 Explosion-Proof Integral Flame Detector, rated Ex d IIC T6 Gb for hazardous locations, features an integral structure that simplifies installation and maintenance. It is well suited for natural gas, coke oven gas, and similar flame applications.

Precise Detection, Real-Time Response
The detectors use advanced photoelectric conversion and microprocessor technology to collect, amplify, and analyze flame signals in real time. With a response time under 100 ms, they quickly determine flame status and output flame-on/flame-off signals, fault alarms, and 4–20 mA analog outputs to ensure safe boiler operation.

Easy Installation & Low Maintenance
They support threaded and flanged mounting methods to suit various installation requirements. Quick connectors or crimp terminals simplify setup and shorten installation time. With IP66/NEMA 4X ingress protection, the detectors ensure reliable operation in harsh conditions and lower maintenance costs.

Professional Service, Full-Lifecycle Support
Walsn delivers comprehensive professional services, including installation guidance, commissioning, troubleshooting, and maintenance training. A 24-hour rapid response system ensures timely resolution of on-site issues, maintaining stable equipment operation and supporting efficient industrial development.

Walsn’s flame detectors deliver reliable flame monitoring — safeguarding every combustion moment and advancing industrial safety.

Reliable insight for safer combustion.