Honeywell LG1093AA25 UV Flame Sensor

Overview

The Honeywell LG1093AA25 is a UV flame sensor designed to monitor combustion processes in industrial settings. It detects ultraviolet radiation emitted by hydrocarbon flames, ensuring accurate and reliable flame detection in gas turbines, furnaces, and boilers. The sensor enhances safety by confirming the presence of a flame and contributes to proper combustion control. It is widely used in power generation, shipboard applications, and pumping stations.

Technical Specifications

• Detection Technology: Geiger-Mueller-type phototube

• Spectral Response: 1800 - 2600 angstroms (solar blind)

• Mounting Interface: 3/4 inch internal NPT

• Control Panel Connection: Teflon shielded cable with one-inch external conduit thread

• Operating Temperature: -40°F to +350°F (-40°C to +177°C)

• Window Pressure Rating: 150 psig at 400°F

• Cable Length: 42ft (12.8m)

• Response Time: Typically <200 ms

• Material: Stainless steel (1.4571) in some variants

• Power Supply: DC voltage from an amplifier (260 - 350VDC)

• Output: Frequency output (275 sec⁻¹ ± 25 sec⁻¹) or current loop (4-20mA DC)

• Approvals: May include CE, CSA, ATEX certifications

• Pressure Rating: Up to 300 psig at high temperatures