Infrared (IR) and Ultraviolet Infrared (UV-IR) Detectors

Weston Myer Ltd provides high-performance Infrared (IR) and Ultraviolet Infrared (UV-IR) detectors, specifically designed for explosion prevention systems in various industrial applications. These optical detectors offer rapid and reliable flame, spark, and glowing ember detection, enhancing safety across critical processes.

IR Detectors are integrated into explosion prevention systems, particularly for dust-handling systems with interconnected ductwork.

Key Features:

• Ultra-fast Flame and Spark Detection: Rapidly detects flames, sparks, and embers, enabling shorter explosion isolation distances.
• Adaptability for Slow Pressure Detection Applications: Reliable for scenarios like weak deflagrations or ignitions near duct entrances.
• Adjustable Sensitivity: Reduces false actuations and enhances operational flexibility.
• Non-Intrusive Installation: Flush-mounted design ensures unobstructed material flow.
• Air Purge Connectors: Minimize window contamination for consistent performance.
• High-Temperature Resistance: Monitors ducts with process temperatures up to 250ºC via remote electronics and fiberoptic light guides.
• Durable Construction: IP65 aluminum die-cast enclosure resists dust, water, and weather.
• Certifications: ATEX-approved, CE-marked, and CSA-approved for global standards compliance.

Applications:

• Detection of flames and sparks in closed systems such as pneumatic transport pipes, conveying lines, and ducts.
• Suitable for dark environments with no external light interference.

Technical Description:
The IR detector consists of up to three fiberoptic light guides, a photo sensor, and an amplifier. The light guides capture infrared radiation emitted by flames or sparks and direct it to the photo sensor. The detector evaluates the radiation changes and sends an alarm signal if a flame is detected.

• Maximum Sensitivity: Detects wavelengths around 830 nm and flames/sparks at temperatures of approximately 800°C or higher.
• Adjustable Sensitivity: DIP-switch settings allow customization for various applications.
• System Compatibility: Supports two- and four-wire systems with dry-contact relays for fault and alarm signaling.
• Air Supply Requirements: A clean, dry, oil-free air supply is required to maintain light guide performance.

UV-IR Detectors are designed for environments with gas or flammable vapor hazards, such as aerosol filling rooms and chemical storage areas. These detectors combine ultraviolet and infrared sensing for reliable and precise flame detection.

Key Features:

• Dual Radiation Detection: Both UV and IR sensors must activate to trigger an alarm, ensuring high immunity to false alarms.
• Automatic Optical Integrity (AOI): Self-checks optical integrity and circuitry for consistent operation.
• Rapid Response Time: Detects flames in milliseconds, ensuring timely activation of explosion protection systems.
• Integral Electronic Control: Enhances reliability and response precision.
• Tri-Color LED Status Indicator: Provides clear visual feedback on the detector’s status.
• False Alarm Resistance: Will not alarm due to lightning, solar radiation, or non-UV emitting artificial lighting.
• Certifications: CE-marked and ATEX-compliant for use in hazardous environments.

Applications:

• Flame detection in occupied areas exposed to gas or flammable vapor risks.
• Used with explosion protection control units to provide critical safety signals.

Technical Description:
The UV-IR Flame Detector includes a sensor module and electronic controller housed in a copper-free aluminum explosion-proof enclosure. Key components include:

• Dual Sensors: UV and IR sensors must respond to an event before an alarm is generated.
• Automatic Optical Testing: Periodic optical tests validate sensor functionality and signal processing accuracy.
• Reflective Plate Design: Ensures optimal performance by maintaining sensor alignment and signal integrity.

With a focus on innovation and safety, Weston Myer Ltd provides state-of-the-art detectors designed to enhance explosion protection systems. From ultra-fast detection to robust construction, these detectors ensure reliable and efficient operation in industrial environments.

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