Pepperl+Fuchs KFD2-SL2-Ex1 Single Channel Safety BarrierHART Communication
Product Advantages
The KFD2-SL2-Ex1 is a single-channel safety barrier from Pepperl+Fuchs, designed for loop-powered, 2-wire smart transmitters in Zone 0/20 hazardous locations. It transmits 4 mA…20 mA HART signals losslessly from the field to the safe-area control room, while providing selectable current source/sink output, line fault detection, and configurable alarm direction, ensuring high process data accuracy and integrity.
Product Highlights
• True loop power: No additional operating power supply is required, drawing power directly from the 4…20 mA signal for simplified wiring.
• Bidirectional HART communication: Supports remote transmitter calibration via a handheld device or the AMS asset management system, ensuring zero maintenance downtime.
• SIL 2 / SC 3 certification: Complies with IEC 61508 functional safety standards, meeting the high reliability requirements of emergency stop and fire and gas systems. • Transparent circuit faults: Open or short circuits immediately trigger LED and transistor alarms, helping operations teams quickly locate the fault.
Typical Applications
• Signal isolation for wellhead pressure transmitters on oil platforms
• Continuous level monitoring for LNG tanks
• Analog input for SIL 2 safety loops in chemical plants
Installation and Maintenance
The KFD2-SL2-Ex1 features a 35 mm DIN rail mount and a slim 12.5 mm housing, saving cabinet space. Pluggable terminals enable online replacement without disconnecting the circuit. With a wide operating temperature range (-40°C to +70°C) and 2.5 kV three-terminal isolation, the KFD2-SL2-Ex1 operates robustly under extreme conditions.
