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The PEPPERL & FUCHS 127392 is a K-System isolated barrier switch amplifier designed for intrinsic safety applications in hazardous environments. It conditions signals from NAMUR sensors or mechanical contacts, converting them into safe area 0/4-20 mA current and relay outputs for integration into control systems. This device ensures reliable signal transmission while maintaining explosion protection for critical process instrumentation.
Technical Specifications:
SERIES/FAMILY: K-System, KFD2 Series
COMPONENT TYPE: Isolated Barrier Switch Amplifier
ELECTRICAL SPECS:
SUPPLY VOLTAGE: 20-35V DC
INPUT SIGNAL: NAMUR proximity sensor or mechanical contact (hazardous area)
OUTPUT SIGNAL 1: 0/4-20 mA current output (safe area, active/passive configurable)
OUTPUT SIGNAL 2: Single Pole Double Throw (SPDT) Relay output (safe area)
INTERFACE/CONTROL:
FUNCTION: Signal conditioner and switch amplifier for intrinsic safety applications
FEATURES: Line fault detection (LFD) for sensor short-circuit or wire break, configurable operating modes (normally open/normally closed)
ENVIRONMENTAL/MOUNTING:
INTRINSIC SAFETY: [Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ib Gb] IIC (specific certifications apply)
MOUNTING: 35mm DIN rail mountable
PROTECTION RATING: IP20 (typical for control cabinet installation)
OPERATING TEMPERATURE: -20 °C to +60 °C
COMPATIBILITY/APPLICATION:
HAZARDOUS AREA CLASSIFICATION: Suitable for applications up to Zone 0/20 (input side)
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