Pepperl+Fuchs KDF2-SR2-Ex1.W Switch Amplifier (37372S)

The Pepperl+Fuchs KFD2-SR2-Ex1.W is a 1-channel intrinsically safe switch amplifier designed for interfacing NAMUR proximity sensors and dry contacts installed in hazardous areas with PLC, DCS, and control systems in safe areas. It provides reliable signal isolation, relay output switching, and fault monitoring for industrial process automation applications.

Key Features

• 1-channel switch amplifier
• Intrinsically safe interface
• NAMUR sensor and dry contact compatible
• Relay output
• Line fault detection (LFD)
• Galvanic isolation
• DIN rail mounting
• Compact 20 mm housing
• Suitable for hazardous area applications

Specifications

• Manufacturer: Pepperl+Fuchs
• Model: KFD2-SR2-Ex1.W
• Part Number: 37372S
• Type: Switch Amplifier / Isolated Barrier
• Input: NAMUR sensors or dry contacts
• Output: Relay contact
• Supply Voltage: 24 VDC
• Mounting: 35 mm DIN Rail
• Housing Width: 20 mm
• Approvals: Intrinsically Safe / Hazardous Area Certified
• Operating Mode: Reversible

Function

The KFD2-SR2-Ex1.W transfers switching signals from field devices located in hazardous areas to control equipment in safe areas. It isolates and monitors the input signal while providing a relay output for alarms, position indication, limit switching, and process control functions. It is commonly used with NAMUR proximity sensors, limit switches, and valve position monitoring systems.

Typical Applications

• Oil & Gas
• Chemical Processing
• Refineries
• Water Treatment
• Process Automation
• Valve Position Monitoring
• Limit Switch Monitoring
• Hazardous Area Instrumentation

Condition

Used industrial surplus. Removed from a working environment. Please review all photographs carefully for condition and included accessories.

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