Pepperl+Fuchs KFD2-UT2-Ex2 Universal Temperature Converter

Overview

The Pepperl+Fuchs KFD2-UT2-Ex2 is a two-channel isolated barrier and universal temperature converter for hazardous area installations. It converts the signal of a resistance thermometer (RTD), thermocouple, potentiometer or voltage source in the field into a proportional 2-wire current output on the safe side, and can also be configured as a signal splitter with one input and two outputs. Each channel provides intrinsic safety to the field circuits, and the device is certified for installation in Zone 0/1/2 and Division 1/2 applications with SIL 2 capability per IEC/EN 61508 and IEC/EN 61511.

Engineering and Design

The KFD2-UT2-Ex2 accepts RTD types Pt10 to Pt1000 per EN 60751 (plus GOST equivalents), Cu10-100 and Ni100, thermocouple types B, E, J, K, N, R, S, T, L and TXK/TXKH/TXA with internal or external cold junction compensation, potentiometers from 0 to 20 kOhm, and voltage inputs from -100 to 100 mV. Each channel outputs 0-20 mA or 4-20 mA in sink or source mode with a fault signal that follows NAMUR NE43 (downscale 0 or 2 mA, upscale 21.5 mA). Transfer deviation after calibration is typically +/-0.1% of span for Pt100, and the device detects sensor breakage and short-circuit with line fault (LFD) monitoring.

The module is powered from a 24 V DC supply via screw terminals or the P+F Power Rail with a consumption of max 1.53 W per module, and is configured through a programming socket using PACTware. The compact B2 housing measures 20 x 119 x 115 mm (W x H x D) with a mass of approx. 130 g and mounts on a 35 mm DIN rail per EN 60715. Certification includes EU-type examination certificate CESI 04 ATEX 143 with marking II (1)G [Ex ia Ga] IIC, II (1)D [Ex ia Da] IIIC and I (M1) [Ex ia Ma] I, and the removable terminal block K-CJC-** is available for cold junction compensation reference junctions.

Key Features

• Two independent channels in a single 20 mm module – saves panel space
• Universal input: RTD, thermocouple, potentiometer or -100 to 100 mV voltage
• Intrinsically safe field circuits for Zone 0/1/2 and Division 1/2 applications
• Signal splitter mode: one input driving two independent outputs
• 0-20 mA or 4-20 mA output in sink or source mode with 550 Ohm max load
• SIL 2 certified per IEC/EN 61508 and IEC/EN 61511 for safety applications
• Line fault detection (LFD) plus sensor breakage and short-circuit monitoring
• NAMUR NE43 compliant fault indication (downscale or upscale)
• PACTware configuration through programming socket with Power Rail supply option
• Compact B2 housing, 35 mm DIN rail mount, ATEX [Ex ia] IIC/IIIC/Ma certified

Applications

Isolated signal conversion and intrinsic safety barriers for RTD, thermocouple and potentiometer signals in oil and gas, chemical, pharmaceutical and process plants, including SIL 2 rated loops and signal splitting applications.

Specifications

Why Seven Star LLC

Seven Star LLC supplies Pepperl+Fuchs intrinsic safety barriers and interface modules with verified specifications and certificates across Oman and the GCC. Our engineers help select the correct module, Power Rail accessories and configuration for your control system.

Call To Action

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