Description
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | 261A1812P012 |
| Manufacturer | GE / General Electric |
| Product Type | UV Flame Scanner / Flame Detector |
| Application | Gas turbine flame monitoring |
| Turbine Reference | GE MS7001 |
| Sensing Technology | Ultraviolet flame detection |
| Sensor Type | UV Flame Scanner |
| Rated Voltage | 350 VDC reported |
| Cable Length | 4.9 m / 16 ft |
| Cable Type | PTFE-insulated, orange outer covering |
| Housing | Stainless steel 1.4571 reported |
| Optical Window | Fused silica |
| Mounting | 3/4-inch internal NPT |
| Hazardous-Area Configuration | Explosion-resistant version reported |
| GE Replacement History | 261A1812P010 replaced by 261A1812P012 |
| Related Honeywell Part | LG1093AA24 |
| Related ITS Replacement | 967X7179M372 |
GE documentation identifies 261A1812P012 as the replacement for 261A1812P010, while specifying the P012 version with a 4.9 m (16 ft) cable.
The available technical references also identify the scanner as an ultraviolet device with a stainless-steel housing, fused-silica window, and 3/4-inch internal NPT mounting.
Application Scenarios & Pain Points
A flame scanner fault during turbine startup can stop the sequence before the machine ever reaches operating speed. The difficult part is distinguishing a genuinely absent flame from a scanner, cable, amplifier, or signal-conditioning problem.
- GE MS7001 gas turbines: 261A1812P012 is referenced specifically for GE MS7001 flame-monitoring applications.
- UV flame detection: The scanner detects ultraviolet radiation associated with combustion rather than measuring turbine temperature or fuel pressure.
- Gas turbine burner monitoring: The device provides flame-presence information to the turbine’s flame-monitoring/protection system.
- Legacy scanner replacement: The P012 version is particularly relevant where an earlier 261A1812P010 installation requires replacement. GE documentation records P010 as replaced by P012.
Field note: If the scanner reports intermittent flame loss, inspect the lens/window and scanner cable before condemning the detector. Soot, optical contamination, poor connector contact, or cable insulation damage can all produce nuisance flame signals.
LG1093AA24 261A1812P012
Related Products
- Honeywell LG1093AA24 — Cross-referenced with GE 261A1812P012 as a corresponding 16-ft UV flame scanner. The Honeywell designation is useful when identifying legacy scanner hardware, but verify the complete application before substitution.
- ITS 967X7179M372 — A documented replacement for GE 261A1812P012. The technical letter specifies the 16-ft/4.9 m cable version and states that it replaces the original part across its applicable functions.
- GE 261A1812P010 — Previous GE part number replaced by 261A1812P012. This is particularly relevant when identifying an older installed scanner.
- GE 261A1812P013 — Related GE flame-scanner part with an 18.6 m (61 ft) cable configuration. It is not simply interchangeable with P012 because the cable length and installation arrangement differ.
- Honeywell LG1093AA26 — Associated with the longer 18.6 m scanner configuration. It is therefore a useful comparison for installations requiring a longer cable, not a direct P012 substitute.
- Honeywell LG1093AA34 / LG1093AA44 — Additional 16-ft scanner references appearing in the GE/ITS cross-reference material. Exact interchangeability should be confirmed against the turbine flame-monitoring configuration.
- GE Flame Detector Amplifier EG1033AA01 — A related flame-monitoring component listed with GE turbine instrumentation. It performs signal-conditioning/amplification duties and does not replace the optical scanner itself.
The Engineer’s Guide: Field Pitfalls to Avoid
⚠️ Do not confuse cable-length variants.
The P012 version is identified with a 4.9 m / 16 ft cable, while related P013/P014/P015 configurations are associated with approximately 18.6 m / 61 ft cable lengths. Cable length is part of the installation specification, not a cosmetic difference.
⚠️ Verify the flame scanner optical path.
A dirty fused-silica window, incorrect mounting depth, or contamination around the sighting path can produce weak or intermittent flame detection. Clean and inspect the optical path according to the turbine service procedure.
⚠️ Do not ignore the signal circuit.
Before replacing the scanner, check the associated wiring, connector condition, flame amplifier/signal-conditioning hardware, and supply circuit. A scanner that appears faulty may simply be receiving or transmitting an abnormal signal.
Practical check: Record the installed scanner’s full part number, cable length, connector termination, mounting thread, hazardous-area marking, and turbine application before removal. For a used spare, inspect the optical window and cable jacket carefully—especially near the scanner body where repeated heat exposure can become visible as discoloration or brittleness.
Frequently Asked Questions (FAQ)
What is GE 261A1812P012?
GE 261A1812P012 is a UV flame scanner/flame detector used in GE gas-turbine flame-monitoring applications. References specifically associate it with the GE MS7001 platform.
Is 261A1812P012 the same as Honeywell LG1093AA24?
They are cross-referenced as corresponding flame-scanner part numbers, with the GE/ITS documentation identifying LG1093AA24 alongside GE 261A1812P012 for the 16-ft/4.9 m configuration.
What cable length does 261A1812P012 use?
The version is documented with a 4.9 m (16 ft) cable. This distinguishes it from several related scanner part numbers using approximately 18.6 m (61 ft) cables.
Can 261A1812P010 be replaced by 261A1812P012?
Yes. GE documentation specifically identifies 261A1812P012 as the replacement for 261A1812P010.
Can I replace 261A1812P012 with 261A1812P013?
Do not assume it is a direct field replacement. The P013 configuration is associated with a substantially longer cable, so the physical installation and cable routing must be checked. The flame-monitoring system should also be verified for the replacement configuration.
What should I inspect when buying a used GE 261A1812P012?
Check the actual part-number label, cable length, cable insulation, mounting thread, optical window, housing condition, and hazardous-area markings. A simple continuity test is not enough to establish scanner performance; functional testing of the UV detection circuit is preferable.
