Honeywell LG1093AA03 UV Flame Monitor System
Configured for fast ultraviolet radiation sensing in industrial burner management systems, the Honeywell LG1093AA03 (LG1093AA03 UV Flame Monitor System) provides direct physical/electrical execution by detecting UV emission from combustion flames across gas turbines and industrial boilers.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | LG1093AA03 |
| Brand | Honeywell |
| Origin | USA |
| Weight | Standard industrial flame sensor assembly mass |
| Dimensions | Standard 3/4-inch NPT housing assembly |
| Operating Temp | -40 to +177 deg C (-40 to +350 deg F) |
| Power Consumption | 350 VDC sensor operating voltage (Amplifier supplied) |
| Detection Technology | Cold-cathode UV sensor tube (Geiger-Muller principle) |
| Spectral Response Range | 185 to 265 nm |
| Response Time | Less than 0.1 s |
| Mounting Connection | 3/4-inch internal NPT thread |
| Cable Connection | 1.5 m shielded high-temperature cable |
| Window Pressure Rating | 150 psig at 204 deg C (10.3 bar at 400 deg F) |
4-20 mA HART Loop Protocol and Flame Signal Integration
In modern process control architectures, flame safeguard receivers translate raw UV detector ionization pulses into standardized system signals. The Honeywell LG1093AA03 connects directly to matching Honeywell EG1033 series flame monitor amplifiers, which process cold-cathode tube discharge frequencies into isolated relay contacts and 4-20 mA HART loop protocol outputs for DCS integration. Dedicated channel-to-channel isolation within the flame safeguard module shields the main process controller from high-voltage excitation surges while continuously transmitting flame signal intensity data over standard analog wiring runs.
Frequently Asked Questions
Q: How does the cold-cathode sensor tube differentiate between actual flame radiation and ambient furnace background heat?
A: The sensor tube responds strictly to ultraviolet light in the narrow 185 to 265 nm spectral band emitted by active combustion. It remains completely blind to continuous infrared radiation emitted by glowing hot furnace refractory brickwork, preventing false flame indications.
Q: What physical installation step is required to maintain optical window clarity and prevent sensor overheating?
A: Install a continuous purge air line into the sight pipe connection upstream of the 3/4-inch NPT mounting threads. Purge airflow keeps the optical sight window free of soot accumulation while maintaining sensor head temperatures well below the 177 deg C maximum limit.
Field Installation Guidelines
Thread the sensor head onto a sight pipe aimed directly at the intersection of the primary flame cone and the burner tip. Ensure the sight path remains unobstructed by fuel nozzles or mechanical structural supports across all firing rates.
Route the 1.5 m shielded high-temperature cable through dedicated metal conduit directly to the flame safeguard amplifier cabinet. Maintain continuous cable shield drain connection to the system earth ground at the amplifier housing end only to prevent ground loop interference. During burner maintenance or window inspection, isolate all burner management system power supplies before removing the sensor from the sight pipe assembly.
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|---|---|
| Delivery | Expedited, Freight, And International Shipping Available. |
| Condition | 100% New with Original Package |
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| Shipping Port | ShangHai, Xiamen |
| Warranty | 12 Months |
| Q: Is Our Pricing Competitive? |
| A: Yes, we collaborate with over 50 countries worldwide. As a top supplier in China, we offer significant discounts based on market trends. |
| Q: What Is the Warranty Period? |
| A: All our new and original products come with a standard one-year warranty. |
| Q: What Payment Methods Do We Accept? |
| A: We require 100% T/T (Telegraphic Transfer) payment before shipping. For items with a lead time, a 30% deposit is needed upfront, and the remaining 70% is due before shipping. If you have a representative in China, you can arrange an RMB transfer through them. |
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| A: We primarily use FedEx, DHL, UPS, and BRE for shipping. If you have an account with any of these carriers, you can handle shipping directly. We also offer free shipping to China-based freight forwarders. |
| Q: What Is Our Delivery Time? |
| A: Delivery usually takes 1-3 days after receiving the initial payment. For items with a lead time, shipping will occur according to the specified schedule. |
| Q: How Do We Package the Goods? |
| A: We ensure safe packaging with multiple layers of protection. Products are first placed in their original boxes and sealed with labels. A layer of bubble wrap is then added for collision protection during transit. Finally, the items are packed securely in durable boxes. |
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