Brief Introduction to HONEYWELL LG1093AA01 Flame Monitor
In industrial settings where combustion processes are critical—like boilers, furnaces, or heaters—ensuring safe and stable flame operation is a top priority. The HONEYWELL LG1093AA01 is a dedicated flame monitor designed to meet this need, acting as a “safety guard” for industrial combustion systems.
1. Product Description
The HONEYWELL LG1093AA01 is an industrial-grade flame monitor engineered to detect the presence or absence of flames in combustion equipment. It’s widely used in power plants, chemical factories, oil refineries, and food processing facilities—anywhere gas, oil, or solid fuels are burned for heating or production.
Its core job is simple: it uses a sensitive optical sensor to “see” the flame. If the flame goes out unexpectedly (due to fuel supply issues or airflow problems), the monitor sends an immediate signal to the system controller. This triggers safety actions like shutting off the fuel supply to prevent dangerous gas buildup or explosions.
Built with industrial durability in mind, it resists dust, high temperatures, and vibration—common challenges in factory environments. It’s also easy to install and calibrate, so technicians can set it up quickly without complex training.
2. Technical Specifications
The LG1093AA01 balances performance and simplicity, with key specs tailored to industrial needs:
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Detection Type: Ultraviolet (UV) detection—ideal for sensing flames from oil, gas, and most industrial fuels
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Response Time: ≤ 1 second—fast enough to trigger safety measures before risks escalate
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Operating Voltage: 24 V DC (18–32 V DC range)—compatible with standard industrial power supplies
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Operating Temperature: -20°C to +70°C—works in cold storage boilers and hot factory furnaces alike
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Protection Rating: IP65—dust-tight and resistant to water splashes, suitable for harsh on-site conditions
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Output Signal: Relay output (NO/NC)—easily connects to most industrial controllers and safety systems
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Dimensions: Compact 120 mm × 80 mm × 50 mm—fits in tight spaces near burners
3. System Introduction
The LG1093AA01 is a key part of Honeywell’s “Industrial Combustion Safety System”—a modular lineup that keeps combustion processes safe and efficient. This system typically includes three main components:
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Flame Monitors (like the LG1093AA01): The “eyes” of the system, detecting flame status
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Safety Controllers: The “brain” that processes signals from the monitor and issues safety commands
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Fuel Valves & Actuators: The “hands” that shut off fuel or adjust supply based on controller signals
Here’s how it works in practice: When the boiler starts, the controller ignites the fuel. The LG1093AA01 confirms the flame is present and sends a “normal” signal. If a gust of wind blows out the flame, the monitor stops detecting UV light and alerts the controller in under a second. The controller then shuts the fuel valve immediately and sounds an alarm—preventing leaks and keeping workers safe.
This system is trusted worldwide because it’s reliable, easy to integrate, and meets strict industrial safety standards (like SIL 2 for functional safety).
4. Recommended Honeywell Related Models
Honeywell offers a range of flame monitors to match different fuel types, installation spaces, and safety needs. Here are the most useful alternatives and upgrades:
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HONEYWELL LG1094AA01: UV/IR dual-detection model—avoids false alarms from sunlight or welding sparks (great for busy factories)
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HONEYWELL LG1092AA01: Lower-cost UV monitor—ideal for small boilers or non-critical heating systems (e.g., factory breakroom heaters)
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HONEYWELL LG1095AA01: High-temperature variant—works up to +100°C for use near large industrial furnaces or smelters
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HONEYWELL LG1093AB01: Explosion-proof version (ATEX-certified)—safe for hazardous areas like oil refineries or chemical storage facilities
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HONEYWELL LG1093AA02: Digital output model (Modbus RTU)—lets you monitor flame status remotely via a control room computer
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HONEYWELL LG1100AA01: Wide-angle detection model—covers multiple burners at once (saves cost for large boilers with 2–3 burners)
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HONEYWELL LG1093AA03: Low-power variant—uses 30% less energy, perfect for off-grid or energy-saving industrial sites
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HONEYWELL LG1096AA01: Combined flame & temperature monitor—adds temperature sensing for extra process control (e.g., food processing ovens)
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