BRAHMA FD2/N PHOTODIODE
Italian-made Brahma FD2/N lateral view UV sensor tube for burner control units, boilers, or drying ovens. Genuine imported, in stock at Nam Viet.
Product Overview
Brahma FD2/N UV Flame Sensor is a flame detection sensor using a UV-sensitive photodiode, designed for gas and oil burner systems with blue flames.
The Brahma FD2/N uses a preamplified silicon sensing element with a UV detection peak of approximately 310 nm. The FD2 model is designed for lateral-side flame detection, making it suitable for installation positions where the flame is viewed from the side.
Technical Specifications
| Specification | Details |
| Brand | Brahma |
| Model | FD2/N |
| Product ID | 18208026 |
| Sensor Type | UV Sensor / Photodiode |
| Sensing Element | Silicon preamplified active element |
| Function | Flame detection |
| Application | Gas and oil burners with blue flames |
| Light Detection Direction | Lateral view |
| Control Unit Type | Brahma analog control boxes |
| Supply Voltage | 220–240 V AC, 50–60 Hz |
| Power Consumption | 1 VA |
| Detection Range | 290–350 nm |
| Peak Detection Wavelength | Approximately 310 nm |
| Reception Angle | 8° |
| Maximum Output Current | 500 µA |
| Operating Temperature | −20°C to +70°C |
| Maximum Humidity | 95% |
| Cable Length | 600 mm |
| Wiring | Brown: Live / Cyan: Neutral / White: Output |
The FD2/N operates on a 220–240 V AC, 50–60 Hz power supply, with a power consumption of 1 VA and a detection range of 290–350 nm. The sensor has an 8° reception angle, a maximum output current of 500 µA, and an operating temperature range of −20°C to +70°C.
Operating Principle
The Brahma FD2/N uses a silicon photodiode to detect the ultraviolet component emitted by the flame. When the burner is operating, UV radiation within the detection range is received by the sensor and converted into a signal sent to the burner control unit to detect the presence of the flame.
The sensor has a detection range of 290–350 nm, with a peak detection wavelength of approximately 310 nm. The FD2/N functions as the flame detection element, while control, monitoring, and safety functions are managed by the burner control unit.
The dimensional drawing helps verify the sensor construction and mounting position before replacement. The FD2/N uses a mounting layout with a 34 mm center-to-center distance between the two mounting holes, corresponding to 17 mm from the center to each hole, and a Ø17.5 mm central opening.
Key Features
The Brahma FD2/N uses a preamplified silicon sensing element designed to detect the ultraviolet component of the flame. This makes the sensor suitable for gas and oil burner systems with blue flames where flame detection is based on UV radiation.
The FD2 model detects light from the side (lateral view), making it suitable for installation positions where the flame is monitored laterally. The 8° reception angle defines the sensor's observation field inside the combustion chamber.
The FD2/N is designed for use with compatible Brahma analog control boxes. For maintenance or replacement, the control unit model, light detection direction, and wiring information should be checked to select the correct configuration.
Brahma FD2/N vs. FD1/N
The Brahma FD2/N and FD1/N are both UV flame sensors using photodiodes for flame detection. The main difference between the two models is their light detection direction.
| Feature | Brahma FD2/N | Brahma FD1/N |
| Sensor Type | UV Sensor / Photodiode | UV Sensor / Photodiode |
| Application | Gas and oil burners | Gas and oil burners |
| Detection Range | 290–350 nm | 290–350 nm |
| Reception Angle | 8° | 8° |
| Light Detection Direction | Lateral | Frontal |
The FD2/N is suitable for installation positions requiring flame detection from the side, while the FD1/N is designed to detect light directly from the front. When replacing a sensor, check the existing model, mounting position, light detection direction, and burner control unit to select the correct product.
Applications of the Brahma FD2/N UV Flame Sensor
The Brahma FD2/N is used in burner systems that require flame detection and monitoring through the ultraviolet component of the flame. It is suitable for:
- Gas burner systems with blue flames
- Oil burner systems with blue flames
- Systems using compatible Brahma analog control boxes
- UV flame sensor maintenance and replacement
- Applications requiring lateral-side flame detection
- Systems requiring UV detection within the 290–350 nm range
The FD2/N is suitable for burners with closed combustion chambers and installation environments shielded from external light. During installation, the 8° detection field should be directed toward the flame. Glass should not be placed between the sensor and the flame, and the sensor cable should not be routed together with ignition or high-voltage cables.
Contact for Brahma Product Consultation and Quotation
Nam Viet specializes in supplying genuine Brahma equipment and spare parts for gas burners, oil burners, and industrial thermal systems, including Brahma flame sensors , Brahma burner control units , Brahma ignition transformers , Brahma solenoid valves and other related spare parts.
Contact Nam Viet for product consultation, model verification, and quotation.
NAM VIET THERMAL EQUIPMENT CO., LTD.
- Address: 50 An Hoi Street, An Hoi Dong Ward, Ho Chi Minh City
- Hotline: 0903 610 952 – 0909 694 025
- Email: binh.huynh@namvietstore.com