Description
Product Description
The Honeywell LG1093AA25 is an advanced ultraviolet (UV) flame sensor designed for reliable monitoring of hydrocarbon flames in industrial combustion systems. Ideal for boilers, furnaces, and gas turbines, it provides rapid flame detection using a Geiger-Müller phototube, ensuring safe and efficient combustion control in demanding environments. Its durable stainless steel housing and solar-blind UV detection prevent false alarms, making it suitable for hazardous industrial applications.
Technical Specifications
| Specification |
Details |
| Manufacturer |
Honeywell |
| Model |
LG1093AA25 |
| Type |
Ultraviolet (UV) Flame Sensor |
| Detection Technology |
Geiger-Müller Phototube |
| Spectral Response |
180–260 nm (solar-blind UV range) |
| Response Time |
Flame detect: ~0.1 s (max 1.0 s), Flame loss detect: ~0.2 s |
| Operating Temperature |
-40°C to +177°C (-40°F to +350°F) |
| Pressure Rating |
Up to 400 psig at 150°F; 300 psig at higher temperatures |
| Cable Length |
12.8 m (42 ft), Teflon-shielded |
| Output Signal |
Frequency output 275 s⁻¹ ±25 s⁻¹ or 4–20 mA DC loop |
| Power Supply |
Provided by amplifier, typically 260–350 VDC |
| Housing Material |
Stainless steel 1.4571, corrosion-resistant |
| Mounting Interface |
¾‑inch NPT internal thread |
Key Features
-
Ultra-fast flame detection within 0.1 seconds
-
High sensitivity to hydrocarbon flames under industrial conditions
-
Solar-blind UV range reduces false triggers from sunlight or hot surfaces
-
Robust stainless steel housing with EMI-shielded cable
-
Flexible integration with Honeywell amplifiers and combustion control systems
-
Certified for use in hazardous locations (ATEX, FM approvals)
Applications
Designed for industrial combustion systems including boilers, furnaces, and gas turbines. Enables operators to verify flame presence, maintain safe operations, and prevent unsafe combustion conditions. Suitable for power generation plants, process industries, and chemical facilities where reliable flame detection is critical.
FAQ
Q: What types of flames can this sensor detect?
A: The LG1093AA25 detects hydrocarbon flames emitting UV radiation within 180–260 nm.
Q: Can it operate in explosive atmospheres?
A: Yes, it holds ATEX and FM explosion-proof certifications for hazardous locations.
Q: What is the maximum cable length supported?
A: It comes with a 12.8 m (42 ft) Teflon-shielded cable suitable for industrial installations.
