Description
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Honeywell / GE Gas Turbine Systems |
| Model | LG1093AA24 |
| GE Part Number | 261A1812P012 |
| Product Type | UV Flame Detector / Flame Scanner |
| Detection Method | Ultraviolet radiation sensing |
| Sensor Technology | UV-sensitive gas-filled detector tube |
| Flame Type | Hydrocarbon flame detection |
| Cable Length | 16 ft (4.9 m) |
| Operating Temperature | -40°F to +350°F (-40°C to +177°C) |
| Supply Voltage | 350 VDC excitation (system supplied) |
| Hazardous Area Rating | Explosion-proof configuration |
| Application | Gas turbine combustion monitoring |
| Compatible Systems | GE turbine flame monitoring systems |
| Mounting | Combustion chamber flame detection port |
| Signal Output | Flame pulse signal to flame monitoring electronics |
Product Introduction
Honeywell LG1093AA24 261A1812P012 Overview
The Honeywell LG1093AA24 261A1812P012 is an ultraviolet flame detector designed for gas turbine combustion monitoring applications. It is used to confirm the presence or absence of a stable combustion flame by detecting ultraviolet radiation generated during hydrocarbon combustion. The sensor provides an essential input signal for turbine protection logic, startup sequencing, and flame failure monitoring.
The Honeywell LG1093AA24 is widely associated with GE gas turbine flame monitoring systems and is used as a replacement for earlier GE flame detector configurations. The GE part number 261A1812P012 corresponds to the 16 ft cable version of this flame scanner family.
The GE 261A1812P012 flame detector operates by sensing ultraviolet emissions from the combustion zone. When a hydrocarbon flame is present, UV radiation reaches the detector tube, generating electrical pulses that are interpreted by the turbine flame monitoring electronics. The control system uses this feedback to determine flame status and initiate protective actions when flame conditions are abnormal.
The Honeywell LG1093AA24 is designed for harsh turbine environments, where the detector must withstand elevated temperatures, vibration, and combustion chamber conditions. The sensor assembly includes a dedicated cable configuration to connect the flame detector to the turbine monitoring system.
The LG1093AA24 261A1812P012 is commonly installed on GE MS7001 and related industrial gas turbine platforms. Correct replacement requires checking the existing flame detector part number, cable length, mounting arrangement, flame monitor compatibility, and turbine control configuration.
LG1093AA24 261A1812P012
Application Scenarios & Field Considerations
Engineering Pain Point
Common flame detection issues include:
- False flame failure alarms
- Turbine trip during startup
- Intermittent flame signal
- Weak UV detection signal
- Combustion monitoring faults
The flame detector may be involved, but engineers should also inspect:
- Detector lens contamination
- Flame scanner alignment
- Cable condition
- Flame monitor electronics
- Combustion chamber conditions
Recommended troubleshooting steps:
- Verify UV detector output signal
- Inspect scanner mounting position
- Clean optical viewing path if applicable
- Check cable insulation and connections
- Confirm flame monitor settings
- Compare detector operation with a known-good unit
The is only one part of the combustion monitoring chain. Reliable flame protection depends on the detector, wiring, flame monitor, and turbine control logic working together.
Typical Applications
Gas Turbine Combustion Systems
Used for:
- Flame presence detection
- Startup flame verification
- Flame failure protection
- Turbine trip protection
Power Generation Plants
Applied for:
- GE turbine combustion monitoring
- Generator package protection
- Continuous flame supervision
Industrial Burner Systems
Used for:
- Hydrocarbon flame monitoring
- Combustion safety systems
- Burner management applications
Technical Pitfalls to Avoid
1. Confirm Exact Replacement Part
Verify:
- model
- GE 261A1812P012 number
- Cable length
- Mounting configuration
Different LG1093 variants may differ by cable length and certification.
2. Check Flame Monitor Compatibility
Confirm:
- Existing flame amplifier model
- Turbine control system version
- Detector voltage requirements
- Signal interface
3. Inspect Installation Conditions
Check:
- Viewing angle
- Scanner cooling arrangement
- Optical path cleanliness
- Mechanical mounting integrity
4. Verify Before Commissioning
After replacement:
- Perform flame signal verification
- Check startup sequence
- Confirm flame failure response
- Record detector operating condition
Related Products
- Honeywell LG1093AA26
Related UV flame sensor configuration with longer cable length (61 ft / 18.6 m). - GE 261A1812P013
Related flame scanner variant for longer cable applications. - Honeywell EG1033AA01
Related flame monitoring component used in turbine combustion applications. - ITS 967X7179M372 Flame Scanner
Replacement flame scanner model corresponding to GE 261A1812P012 / Honeywell applications.
