Name: KFD2-UT2-Ex2 Pepperl+Fuchs Universal Temp Converter SIL2
SKU: KFD2-UT2-Ex2
Price: 234.00 USD
Availability: InStock

Product details

KFD2-UT2-Ex2 | Pepperl+Fuchs Universal Temperature Converter

KFD2-UT2-Ex2 is a 2-channel isolated barrier for temperature sensors. It accepts TC, RTD, potentiometer, or voltage inputs. The device provides a 4-20 mA current output in sink or source mode. It is SIL 2 certified per IEC 61508. Configuration is easy with PACTware software. This converter ensures reliable signal transmission in hazardous areas.

Technical Specifications

Manufacturer: Pepperl+Fuchs
Model: KFD2-UT2-Ex2
Type: Universal Temperature Converter
Input Types: Thermocouple (B, E, J, K, N, R, S, T, L, TXK, TXKH, TXA), RTD (Pt10, Pt50, Pt100, Pt500, Pt1000, Cu10, Cu50, Cu100, Ni100), Potentiometer (0–20 kΩ), Voltage (-100–100 mV)
Output: 0/4–20 mA (sink or source), load 0–550 Ω
Supply Voltage: 20–30 V DC (Power Rail)
Power Dissipation: ≤ 1.53 W
Reaction Time: 920 ms (2-wire RTD) to 2.8 s (3-wire potentiometer)
Accuracy (Pt100): ± (0.06 % of measured value in K + 0.1 % of span + 0.1 K)
Ambient Temperature Range: -20 … 60 °C
Protection Degree: IP20
Dimensions (W x H x D): 20 x 119 x 115 mm (B2 housing)
Weight: approx. 130 g

Functional Safety & Certifications

SIL Rating: Up to SIL 2 according to IEC/EN 61508 / 61511
ATEX: [Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I (CESI 04 ATEX 143)
IECEx: [Ex ia Ga] IIC / [Ex ia Da] IIIC / [Ex ia Ma] I (IECEx TUN 07.0003)
UL/CSA: Control drawings 116-0410 (UL) and 116-0314 (CSA)
EMC: EN 61326-1:2013 (industrial locations), NE 21:2006

Installation & Commissioning

Mounting: 35 mm DIN rail per EN 60715:2001
Connection: Screw terminals (field side: 1,2,3,4,5,6; control side: 7-12)
Configuration: Via PACTware (programming socket on front)
Line Fault Detection (LFD): Sensor burnout and short-circuit monitoring
Cold Junction Compensation: Internal or external for thermocouples
LED Indicators: For status and fault diagnostics

Compatibility & Applications

Signal Splitter: Usable as 1 input to 2 outputs
Sensor Types: RTD (2,3,4-wire), TC, potentiometer, mV source
Typical Applications: Temperature monitoring in chemical plants, oil & gas, power generation, and factory automation
System Integration: Works with all common PLCs and DCS systems via 4-20 mA loop

Expert Review & Manager’s Insight

Expert Review: The KFD2-UT2-Ex2 offers excellent accuracy and fast response. Its dual-channel design saves space. Configuration via PACTware is intuitive. The SIL 2 rating gives confidence for safety loops. The device handles various sensors, making it a versatile choice.
Manager’s Insight: This converter reduces spare part inventory. It simplifies engineering with universal input. The robust housing ensures long service life. The power rail option cuts wiring time. It is a cost-effective solution for critical temperature measurements.

Frequently Asked Questions (FAQ)

What input types does the KFD2-UT2-Ex2 support?
It supports thermocouples (B,E,J,K,N,R,S,T,L), RTDs (Pt, Cu, Ni), potentiometers (0-20 kΩ), and voltage (-100 to 100 mV).
How do I configure the device?
Use PACTware software via the front programming socket. The connection is simple and does not require special tools.
Is the output configurable as sink or source?
Yes, you can set each output to sink or source mode according to your control system requirements.
What is the fault signal behavior?
In case of sensor fault, the output goes to downscale (0 or 2 mA) or upscale (21.5 mA) as per NAMUR NE43.
Can I use this converter in a hazardous area?
Yes, it has ATEX and IECEx approvals for Ex ia and Ex nA zones. Please check the certificate for specific gas groups.
What is the recommended power supply?
Use a 24 V DC supply (20-30 V DC). The device can be powered via the Power Rail or terminals 14+ and 15-.
How do I handle cold junction compensation?
You can use internal CJC or connect an external compensation element. The setting is done via PACTware.
What is the maximum load for current output?
The source mode supports up to 550 Ω. For sink mode, ensure the external voltage is between 5 and 30 V.
Does it support 2-wire RTD connection?
Yes, it supports 2-, 3-, and 4-wire RTD connections. Lead resistance up to 50 Ω per line is compensated.
Is there any isolation between input and output?
Yes, safe electrical isolation is provided per IEC/EN 60079-11. The isolation voltage peak value is 375 V.

Selection Guide

Choose the KFD2-UT2-Ex2 if you need a universal input for temperature sensors.
Select this model for SIL 2 safety applications in hazardous areas.
Consider the dual-channel output if you need a signal splitter for two control systems.
Prefer this converter when you require PACTware configuration for flexibility.
Order this device for reliable performance in wide ambient temperature ranges.