The Det-Tronics 028249-001, specifically the X3301A4M23T2 model, is a sophisticated multispectrum infrared (IR) flame detector designed to provide superior fire protection in high-risk industrial environments. As part of the X3301 series, it utilizes advanced signal processing and multiple IR sensors to distinguish between actual flame signatures and non-fire “false alarm” sources, such as arc welding or lightning. This unit is globally recognized for its reliability in detecting hydrocarbon fires while maintaining high performance in challenging outdoor or indoor conditions.
Technical Description & Parameters
The X3301A4M23T2 is engineered for precision and durability, featuring a robust housing and high-speed response capabilities.
- Model Number: 028249-001 (X3301A4M23T2)
- Detection Technology: Multispectrum Infrared (Triple IR)
- Housing Material: Aluminum (Standard)
- Entry Size: M23 thread connection
- Output Options: Relays and 4-20 mA current output
- Operating Voltage: 24 VDC nominal (18 to 30 VDC range)
- Spectral Range: Multiple IR wavelengths for optimized detection
- Response Time: Typically less than 5 seconds for standard fires
- Field of View: 90 degrees horizontal and vertical (cone of vision)
Product Datasheet Essentials
This detector is equipped with Automatic Optical Integrity (oi) testing, which checks the optical surfaces and internal circuitry every 60 seconds to ensure the unit is fully operational. The multispectrum technology allows it to “see” through smoke, oil, and water vapor more effectively than single-frequency detectors. It is designed to meet strict global explosion-proof and performance standards, including FM, CSA, ATEX, and IECEx certifications.
Country of Origin
USA (Detector Electronics Corporation)
Application Fields
The X3301 series is widely deployed in industries where fire hazards are significant and immediate detection is critical:
- Oil and Gas Refineries and Offshore Platforms.
- Chemical and Petrochemical Processing Plants.
- Gas Turbine Enclosures and Fuel Loading Racks.
- Hangar Fire Protection and Munitions Facilities.
- Pipeline Compressor Stations.
Product Usage Instructions
- Placement: Mount the detector at a height and angle that ensures the hazard area is within the 90-degree field of vision.
- Wiring: Use shielded cable to connect the 24 VDC power and signal outputs (Relay/4-20 mA) to the fire alarm control panel. Ensure the M23 cable entry is properly sealed.
- Alignment: Direct the sensor toward the potential source of fire, avoiding obstructions. Use the Det-Tronics swivel mount for precise positioning.
- Maintenance: Regularly clean the sapphire lens with a clean, soft cloth and the recommended cleaning solution to prevent build-up that could hinder optical performance.
Common Questions & Answers (Q&A)
Q: Does the X3301 detect non-hydrocarbon fires like Hydrogen? A: No, the X3301 multispectrum IR detector is specifically tuned to the carbon dioxide (CO2) emission spike of hydrocarbon-based fires (e.g., gasoline, methane, diesel).
Q: What does the “oi” feature do? A: The “oi” (Optical Integrity) feature is a patented calibrated internal test that ensures the lens is clean and the sensors are functioning without needing an external manual test lamp.
Q: Can this unit be used in hazardous locations? A: Yes, the X3301A4M23T2 is certified for use in Class I, Division 1, and Division 2 environments, making it suitable for explosive atmospheres.
Explore More Fire and Gas Solutions
For genuine X3301A4M23T2 units and other Det-Tronics safety components, explore our comprehensive inventory of flame and gas detection systems.
Recommended Similar Models
- X3301A4N13T1 – A variation featuring NPT thread entries instead of M23.
- X3302A4M23T2 – Specifically designed for detection of hydrogen and non-hydrocarbon fires.
- X5200A4M23T2 – A Digital Ultraviolet/Infrared (UVIR) detector for specialized applications.
- X9800A4M23T2 – A Single Frequency IR detector for high-speed fire detection needs.
- U7698E – A single-spectrum IR flame detector used in legacy or specific industrial setups.



