The ABB SF810-LOS-IR-TL, also cataloged as the SF810-LOS-IR-TL Optical Safety Sensor, operates as a dedicated hardware component for industrial burner flame monitoring, fuel-safety interlocking, and real-time flameout protection within utility boiler and multi-fuel thermal management systems.
Hardware Specifications
Parameter
Specification
Model
SF810-LOS-IR-TL
Brand
ABB (Uvisor Series)
Origin
China / Sweden
Product Type
Intrinsic Safety & Network Modules
Optical Sensing Tech
Solid-State Silicon (Si) Photodiode
Spectral Tracking Band
320 nm to 1100 nm (920 nm peak IR spectrum)
Target Fuel Profiles
Pulverized Coal, Heavy Fuel Oil, Biomass, Orimulsion
Mechanical Sight Pipe Mount
1-inch NPT Male thread
Electrical Conduit Inlet
3/4-inch NPT Female thread
Termination Interface
Internal terminal strip configuration
Environmental Ingress Rating
IP66 / IP67 (Equivalent NEMA 4X)
Ambient Operating Temp
-40 to +70 deg C
Net Weight
2.20 lbs (1.00 kg)
Process Instrumentation and Surge Voltage Protection Limits
The SF810-LOS-IR-TL isolates optical flicker frequencies from background infrared energy emitted by hot boiler brickwork. To support reliable flame safety loop execution, the integrated silicon sensor captures the high-frequency AC oscillation profiles of combustion zones and outputs raw analog current signals over a four-wire terminal interface back to a remote analysis hub (such as the ABB FAU810). The hardware features internal surge voltage protection limits across its power input terminals to absorb destructive common-mode voltage spikes generated by boiler ignition transformers or massive induction fans. A localized electronic shutter runs continuous self-check operations, blocking the optical pathway at fixed cycles to evaluate lens transparency and photodiode baseline health without tripping the master safety-instrumented system (SIS).
