The AT-FD3 explosion-proof UV process flame presence monitor is an intelligent flame-sensing device engineered for real-time monitoring of combustion processes in hazardous industrial environments.
By employing advanced ultraviolet (UV) optical technology and digital signal processing, it precisely distinguishes between real flame emissions and common light interference—ensuring fast, reliable, and stable protection.
Accurate Flame Detection
Rapidly identifies flame presence or absence through advanced UV sensing technology, maintaining consistent performance even in complex conditions.
High Sensitivity
Detects extremely weak flame signals, ensuring dependable operation in environments with dust, smoke, or low-light interference.
Fast Response
Responds in ≤1 second, enabling immediate warning and reducing fire risk or equipment damage.
Outstanding Stability
Built with high-grade electronic components and robust circuits, ensuring anti-interference capability and long-term operational reliability.
Explosion-Proof Durability
Constructed from ADC12 aluminum alloy with IP66 protection and Ex db IIC T6 Gb / Ex tb IIIC T80°C Db explosion-proof certification.
Easy Installation & Maintenance
Integrated structure combining optical sensing, signal processing, and alarm output simplifies field installation and reduces maintenance costs.
Intelligent Remote Control
Enables non-contact configuration and diagnostics, improving safety in high-temperature, high-pressure, or toxic environments.
Comprehensive Output Options
Provides switch output, 4-20 mA analog output, RS-485/Modbus communication, and optional 4G transmission for flexible integration into monitoring systems.
| Parameter | Specification |
|---|---|
| Target Detected | Fuel Oil, Gas Combustion Flames |
| Detection Principle | Ultraviolet (UV) Detection |
| Spectral Response | 185–260 nm |
| Response Time | ≤ 1 second |
| Alarm Delay | 1–120 s adjustable |
| Detection Distance | ≤ 8 m |
| Output Signals | Switch Output (Dry Contact), Alarm Light, 4–20 mA, RS-485/Modbus |
| Operating Voltage | 24 V DC |
| Power Consumption | ≤ 5 W |
| Explosion-Proof Rating | Ex db IIC T6 Gb / Ex tb IIIC T80 °C Db |
| Protection Grade | IP66 |
| Operating Temp | −20 °C ~ +70 °C |
| Relative Humidity | ≤ 95 % RH (non-condensing) |
| Housing Material | ADC12 Aluminum Alloy |
| Dimensions | 155 × 116 × 111 mm |
| Weight | ≤ 1.5 kg |
| Cable Gland | M20 × 1.5 |
| Air Purge Interface | G1/4 External Thread |
| Parameter Setting | Remote Control |
Ideal for boilers, furnaces, kilns, gas turbines, and heating systems across power plants, chemical industries, metallurgy, and petrochemical facilities.
