Description
Honeywell XF823A
Technical Specifications: Power supply: 24VDC Compatible sensor: UV flame detector Signal input: UV sensor pulse signal Output: relay contact flame present / flame loss signal Flame loss response time less than 1 second Operating temperature: -20℃ to +60℃ Protection rating: IP20 Mounting method: DIN rail mounting
Functional Features: Process UV pulse signal from flame detector. Discriminate valid flame signal against background light interference. Fast flame loss detection for burner safety shutoff. Built-in circuit and wiring fault self-diagnosis. Adjustable sensitivity setting for different combustion fuels. Relay contact output for safety interlock circuit.
Application Scenarios: Gas fired boilers, oil burners, industrial furnaces, thermal oil heaters, process heating burners, incinerator combustion safety control.
Performance Parameters: Flame detection response time less than 1 second. Diagnostic coverage higher than 95%. Relay contact meets burner safety interlock requirement.
Material Composition: FR4 industrial printed circuit board. UV signal pulse processing chips. Safety relay components. Flame retardant plastic DIN rail housing. Screw terminal blocks for sensor and output wiring.
Structural Features: DIN rail mount plastic housing. Front LED indicators for flame status and fault alarm. Screw terminals for UV sensor input and relay output. EMC anti-interference circuit.
Working Principle: UV flame sensor detects ultraviolet ray emitted by flame and converts radiation into pulse electrical signal. XF823A module receives and filters pulse signal, distinguishes real flame signal from external light interference. When flame extinguishes, signal disappears, module immediately triggers flame loss relay output, sending signal to burner safety controller to cut fuel supply and activate alarm. Onboard diagnostic circuit continuously checks sensor wiring break and short circuit fault.
Installation Requirements: Mount on 35mm DIN rail inside burner control cabinet. UV sensor cable adopts shielded twisted pair wire. Separate sensor cable from high voltage ignition wiring. Tighten all terminals to specified torque value.
Usage Notes: Only use matched Honeywell UV flame sensor. Perform flame test during burner commissioning to adjust sensitivity. Cut off power before wiring modification or module replacement. Conduct regular function test according to burner safety procedure.
