Product Details
The Honeywell LG1093AA26, also cataloged as the LG1093 Flame Sensor, operates as a dedicated hardware component for direct ultraviolet optical radiation sensing and combustion flame detection within burner monitoring systems. Physical mounting through a 3/4 inch internal NPT connection interfaces directly with sight pipes to monitor combustion intensity. Electrical signals translate through a Teflon shielded cable to communicate flame state feedback directly to control panels.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | LG1093AA26 |
| Brand | Honeywell |
| Origin | USA |
| Weight | 4.00 kg |
| Dimensions | Standard Optical Housing Assembly |
| Operating Temp | -40 to +176 deg C (-40 to +350 deg F) |
| Power Consumption | Passive Sensing Element |
| Sensor Type | Optical Flame Sensor |
| Mounting Interface | 3/4 inch internal NPT |
| Control Connection | Teflon shielded cable with 1 inch external conduit thread |
| Pressure Rating | 150 psig at 204 deg C (400 deg F) window rating |
| Cable Length | 61 ft (18.6 m) |
Channel-to-Channel Isolation
The LG1093AA26 sensor assembly incorporates signal isolation via a Teflon shielded cable harness to prevent signal degradation and cross-talk across adjacent sensor channels. Shielding suppresses electromagnetic interference from high-voltage ignition spark transformers and adjacent electrical drives. High dielectric isolation safeguards control panel inputs against field ground loops and common-mode transients occurring along the sight pipe housing.
Frequently Asked Questions
Q: Can the LG1093AA26 flame sensor be serviced or disconnected while the combustion chamber is pressurized?
A: No. The viewing window maintains a 150 psig pressure rating at 204 deg C. The process line must be depressurized and isolated before removing the sensor from its 3/4 inch NPT mounting thread.
Q: How is signal shielding maintained along the 61 ft cable run to the control panel?
A: The Teflon shielded cable uses an integrated shield conductor connected through a 1 inch external conduit thread to maintain low-impedance grounding and noise suppression.
Q: What is the operating temperature threshold for the sensor electronics and housing?
A: The sensor housing and internal optics are rated for continuous operational exposure between -40 and +176 deg C (-40 to +350 deg F).
Field Installation Guidelines
- Inspect the 3/4 inch internal NPT mounting threads and clean the sight pipe opening prior to installation.
- Engage the mounting thread with a minimum of 5 full turns of thread engagement, applying high-temperature thread sealant as required.
- Route the Teflon shielded cable through a 1 inch conduit, maintaining separation from high-voltage ignition leads and AC power cables.
- Verify window glass seal integrity to prevent hot combustion gas bypass under process pressures up to 150 psig.
- Connect the cable shield drain wire directly to the control panel earth ground bus bar.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
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