Honeywell LG1093AA24 | Flame Scanner 261A1812P012

Description

• Brand: Honeywell
• Full Model Number: LG1093AA24 / 261A1812P012
• Lifecycle Status: Legacy / replacement-stock item; current OEM availability requires confirmation
• Core Function: UV flame scanner for gas turbine flame monitoring
• Top 3 Technical Specs: Ultraviolet flame sensing | 16 ft (4.9 m) cable | 350 VDC-rated assembly
• Stock & Condition: New Surplus / Tested Refurbished subject to physical inventory confirmation | Emergency dispatch subject to QC and carrier cutoff

Module 3: Obsolescence & Supply Chain Deep Dive

A failed LG1093AA24 can hold up a gas-turbine start when the flame-monitoring circuit cannot be restored with an exact replacement. This part is cross-referenced with GE 261A1812P012 and is identified as a UV flame scanner used in turbine flame-monitoring applications. The documented configuration includes a 16 ft (4.9 m) cable, while published technical data for the 261A1812P012 identifies a 350 VDC rating and an operating range of approximately -40°F to 350°F. The cross-reference documentation also distinguishes the 16 ft version from 42 ft and 61 ft variants, making the complete part number important during procurement.

For TCO, retaining the existing flame-scanner installation is usually less expensive than changing the detector architecture, cable routing, mounting arrangement, and associated control hardware. The exact Honeywell-to-GE cross-reference is particularly valuable here: LG1093AA24 corresponds to GE 261A1812P012, and the documented 16 ft cable configuration is consistent across the two identifiers. A like-for-like spare can therefore reduce outage exposure while avoiding unnecessary engineering changes —although procurement should verify detector mounting, cable length, electrical characteristics, and the turbine control scheme before issuing the PO.

Module 4: Compatibility & Replacement Matrix (Crucial for Buyers)

Field Traps — Watch Out

Cable-length mismatch: The documented Honeywell and GE 261A1812P012 configuration uses a 16 ft (4.9 m) cable. Other Honeywell part numbers in the same family use 42 ft or 61 ft cables. A physically similar scanner with the wrong cable length can create an avoidable installation problem.

Part-number substitution risk: Available cross-reference documentation shows 261A1812P010 being replaced by 261A1812P012, while several other GE and Honeywell identifiers map to different later configurations. Procurement should approve the complete identifier, not only the LG1093 or 261A1812 family prefix.

Honeywell LG1093AA24

Module 5: Quality Assurance & Testing SOP

A flame scanner used on a gas turbine should not be released from inventory on cosmetic inspection alone. Verification should address identity, mechanical condition, electrical integrity, and actual flame-signal behavior.

• OEM anti-counterfeit visual inspection: Check Honeywell identification, GE cross-reference markings where present, housing construction, connector/interface condition, cable jacket, and labeling.
• Part-number verification: Confirm and cross-reference to 261A1812P012 before test release.
• Physical inspection: Examine the optical window, housing, mounting thread, cable gland, connector, and cable jacket for cracks, contamination, corrosion, or impact damage.
• Cable verification: Measure and document the installed cable length; verify continuity and insulation condition.
• Electrical baseline test: Check for abnormal resistance, shorts, open conductors, and grounding issues before energization.
• Power-on functional test: Apply the approved test supply and verify detector response in the intended test setup.
• UV flame-response test: Use a controlled UV flame source or approved simulator to confirm flame detection response.
• Flame-loss test: Remove the simulated flame signal and verify the connected monitoring system responds as expected.
• Signal stability check: Monitor the scanner output for intermittent behavior, unstable indication, or connector-related signal loss.
• Load/system interface test: Where the test bench permits, operate the scanner with the relevant flame-monitoring input circuit under controlled conditions.
• Final QC: Record exact part number, serial/lot data where available, cable length, test results, photographs, inspector approval, and packaging status.

Published information identifies 261A1812P012 as a UV flame scanner with a stainless-steel housing, fused-silica window, 3/4-inch internal NPT mounting, and a 4.9 m / 16 ft cable. Those details should be checked against the physical unit before shipment.

Module 6: Procurement & Lifecycle FAQ

Q1. Is Honeywell genuinely in stock, and what is the cutoff for emergency shipping?
A1. Physical inventory should be confirmed against the exact designation and required condition. Because this is a legacy turbine flame-scanner item, procurement should request confirmation of actual warehouse stock rather than rely on a catalog listing. Emergency dispatch depends on order receipt, payment clearance, QC completion, packing, and carrier pickup.

Q2. How do you verify the condition and authenticity of an obsolete or surplus ?
A2. Require exact part-number inspection, label verification, housing and optical-window inspection, cable examination, electrical continuity checks, and controlled flame-signal testing. Actual-unit photographs should be part of the approval record for surplus stock.

Q3. Are there any compatibility issues engineers should check before issuing the PO?
A3. Yes. Verify the 16 ft cable length, UV sensing technology, mounting interface, electrical characteristics, connector arrangement, and the associated turbine flame-monitoring system. The published cross-reference specifically maps to GE 261A1812P012 and identifies the 16 ft configuration.

Q4. Can GE 261A1812P012 be purchased when the existing unit is Honeywell ?
A4. The documented cross-reference identifies 261A1812P012 and as corresponding part identifiers for the 16 ft flame-scanner configuration. Engineering should still compare the nameplate and physical interface before installation.

Q5. What warranty and return protection should procurement require?
A5. The quotation should state the warranty period, DOA definition, functional-failure coverage, return authorization process, inspection window, and return-freight responsibility. For surplus turbine components, the seller should also state the exact condition classification and guarantee shipment of , rather than a different cable-length or scanner variant.