Honeywell LG1093AC01 Industrial Ultraviolet Flame Detector

Configured for optical radiation verification in burner control loops, the Honeywell LG1093AC01 (LG1093 Ultraviolet Flame Sensor) provides direct physical/electrical execution. It detects continuous ultraviolet photon flux emitted by hydrocarbon combustion within the 180-260 nm solar-blind spectrum and drives discrete trip output states to safeguard industrial burner management assemblies.

Hardware Specifications

4-20 mA HART Loop Protocol and Channel Isolation

The device coordinates loop signaling parameters to interface smoothly with burner management and distributed control systems. Channel-to-channel isolation safeguards sensitive internal detection circuits from high-voltage transient surges originating across shared power busses and ignition transformer loops. Field wiring terminates through shielded conduits to preserve low-level signal integrity over extended transmission distances up to 330 meters.

Frequently Asked Questions

Q: What prevents ambient sunlight or artificial lighting from triggering false flame indications?

A: The sensor utilizes a Geiger-Mueller phototube calibrated exclusively to the 180-260 nm solar-blind ultraviolet band, completely rejecting visible light and infrared wavelengths.

Q: How fast does the module update output signal state upon flame extinction?

A: The unit executes signal state transitions within 0.2 seconds of flame loss, allowing rapid fuel shutoff initiation by the safety controller.

Field Installation Guidelines

Mount the sensor housing directly onto the sight pipe aiming at the primary flame zone. Ensure all field wiring runs inside dedicated metallic conduits separated from ignition transformer leads to prevent high-frequency noise interference. Connect the wire shield drain to the main cabinet ground earth point at one end only to eliminate ground loop currents. Tighten conduit connections to maintain environmental sealing.