The HONEYWELL LG1093AC01 flame sensor is an ultraviolet (UV) flame sensor designed specifically for industrial applications. Its core function is to monitor the combustion process by detecting the ultraviolet radiation (180-260 nm) emitted by a flame, ensuring the safe and efficient operation of equipment. Below are its detailed functions and features:
Working Principle
Detection Mechanism: The ultraviolet light released during flame combustion is received by the UV-sensitive element (such as a UV phototube) within the sensor and converted into an electrical signal.
Signal Processing: After amplification and filtering, the electrical signal triggers a control signal (such as a digital or analog signal) through the output module, driving an alarm or actuator (such as closing a valve or activating a fire suppression system).
Interference Resistance Design: Specific wavelengths of ultraviolet light are filtered to reduce interference from non-flame light sources (such as sunlight or artificial light).
Technical Parameters
Detection Wavelength: 180-260 nm (Ultraviolet Band)
Response Time: ≤0.2 seconds
Operating Voltage: 28VDC, 20-35VDC, or 115VAC
Ambient Temperature: -40℃ to +85℃
Transmission Distance: ≤330 meters
Anti-interference Capability: Suppresses ambient light and electromagnetic interference
Core Functions
Flame Detection and Safety Monitoring: By capturing the unique ultraviolet radiation (180-260 nm band) of flames, it quickly responds (approximately 0.2 seconds) and confirms the presence of a flame, ensuring stable combustion in combustion equipment (such as gas turbines, industrial furnaces, and boilers) after ignition, or triggering alarms/shutting off gas supply in case of accidental flame extinguishing, preventing safety accidents such as gas leaks and explosions.
Widely used in industrial equipment such as gas turbines, industrial furnaces, boilers, and oil refineries to ensure the safety and efficiency of the combustion process.
Anti-interference and High Reliability: Utilizes ultraviolet detection technology to effectively suppress the influence of ambient light, heat radiation, and other interference sources, avoiding false alarms; designed to withstand high temperatures (-40℃ to +85℃), vibration, and electromagnetic interference in industrial environments, ensuring long-term stable operation.
Technical Parameters and Characteristics
Detection Band: 180-260 nm (ultraviolet band), precisely matching the ultraviolet radiation characteristics of flames.
Fast Response and High Sensitivity
Response time is only about 0.2 seconds, enabling rapid triggering of control signals (such as alarms, valve closure, and fire suppression system activation), reducing accident losses.
High sensitivity, capable of detecting weak flame signals, avoiding missed detections.
Anti-interference and Stability
Strong resistance to ambient light interference, effectively suppressing the influence of non-flame light sources such as sunlight and artificial light, ensuring detection accuracy.
High temperature resistance (-40℃ to +85℃) and vibration resistance, adaptable to harsh industrial environments (such as high temperature, high humidity, and electromagnetic interference).
Operating Voltage: Supports multiple power supply modes including 28VDC, 20-35VDC, or 115VAC, adaptable to the needs of various industrial equipment.
Transmission Distance: Maximum transmission distance between sensor and amplifier reaches 330 meters, suitable for long-distance signal transmission in large industrial scenarios.
Safety System: Fire early warning system, industrial safety protection device, linked with alarms and fire extinguishing systems.
Special Environments: Industrial sites with high temperature, high humidity, high dust, and strong electromagnetic interference (such as oil refineries, chemical plants, tunnels, warehouses).
Environmental Adaptability: Withstands extreme temperatures from -40℃ to +85℃, vibration-resistant design, meets industrial-grade weathering standards.
Application Scenarios:
Industrial Combustion Equipment: Gas turbines, industrial boilers, heating furnaces, smelting furnaces, etc., ensuring the safety and efficiency of the combustion process.
High-Risk Environments: Petrochemical, power, metallurgical, and other industries, monitoring the combustion status of flammable gases to prevent explosions or fires.
Automated Control System: Integrated into industrial automatic control systems (such as PLC and DCS systems), enabling real-time feedback and automatic adjustment of flame status.
Advantages Summary
This sensor, with its high sensitivity, fast response, strong anti-interference capabilities, and industrial-grade weather resistance, has become a core component for industrial combustion safety monitoring, effectively reducing the risk of gas leaks caused by flame extinguishing and ensuring the safety of personnel, equipment, and production.
Differences from Other Sensors
Ultraviolet vs. Infrared/Visible Light: Ultraviolet sensors are more sensitive to specific wavelengths of flames and have stronger anti-interference capabilities, making them suitable for industrial environments; infrared sensors focus on detecting thermal radiation and are commonly used in household fire alarms.
Ionizing vs. Photoelectric: Ionizing sensors work by detecting changes in ion current in the flame and are unresponsive to high temperatures; photoelectric sensors (such as this model) detect through light signals and are more suitable for industrial scenarios.
In summary, the HONEYWELL LG1093AC01 flame sensor is a key component for industrial safety. Utilizing ultraviolet detection technology, it enables rapid and accurate flame monitoring, ensuring safe equipment operation, reducing fire risks, and is suitable for high-temperature, high-interference industrial environments. It is one of the core devices for safety protection in industrial combustion processes.
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