Serviceline Industrial Sensors
Serviceline Explosion Protection

Universal Temperature Converter KFD2-UT2-2

  • 2-channel signal conditioner
  • 24 V DC supply (Power Rail)
  • Thermocouple, RTD, potentiometer or voltage input
  • Usable as signal splitter (1 input and 2 outputs)
  • Current output 0/4 mA ... 20 mA
  • Sink or source mode
  • Configurable by PACTware
  • Line fault (LFD) and sensor burnout detection
  • Up to SIL 2 acc. to IEC 61508/IEC 61511

Please note: All product-related documents, such as certificates, declarations of conformity, etc., which were issued prior to the conversion under the name Pepperl+Fuchs GmbH or Pepperl+Fuchs AG, also apply to Pepperl+Fuchs SE.

Download the complete datasheet as a PDF:

Datasheet excerpt: Technical data of  KFD2-UT2-2

General specifications
Signal typeAnalog input
Functional safety related parameters
Safety Integrity Level (SIL)SIL 2
Connectionterminals 14+, 15- or power feed module/Power Rail
Rated voltage20 ... 30 V DC
Ripplewithin the supply tolerance
Power dissipation/power consumption≤ 1.53 W / 1.53 W
Programming interfaceprogramming socket
Connection sidefield side
Connectionterminals 1, 2, 3; 4, 5, 6
RTDtype Pt10, Pt50, Pt100, Pt500, Pt1000 (EN 60751: 1995)
type Pt10GOST, Pt50GOST, Pt100GOST, Pt500GOST, Pt1000GOST (6651-94)
type Cu10, Cu50, Cu100 (P50353-92)
type Ni100 (DIN 43760)
Measuring currentapprox. 200 µA with RTD
Types of measuring2-, 3-wire connection
Lead resistancemax. 50 Ω per line
Measurement loop monitoringsensor breakage, sensor short-circuit
Thermocouplestype B, E, J, K, N, R, S, T (IEC 584-1: 1995)
type L (DIN 43710: 1985)
type TXK, TXKH, TXA (P8.585-2001)
Cold junction compensationexternal and internal
Measurement loop monitoringsensor breakage
Potentiometer0 ... 20 kΩ (2-wire connection), 0.8 ... 20 kΩ (3-wire connection)
Voltageselectable within the range -100 ... 100 mV
Input resistance≥ 1 MΩ (-100 ... 100 mV)
Connection sidecontrol side
Connectionoutput I: terminal 7: source (-), sink (+), terminal 8: source (+), terminal 9: sink(-)
output II: terminal 10: source (-), sink (+), terminal 11: source (+), terminal 12: sink(-)
Output I, IIAnalog current output
Current range0 ... 20 mA or 4 ... 20 mA
Fault signaldownscale 0 or 2 mA, upscale 21.5 mA (acc. NAMUR NE43)
Sourceload 0 ... 550 Ω
open-circuit voltage ≤ 18 V
SinkVoltage across terminals 5 ... 30 V. If the current is supplied from a source > 16.5 V,
series resistance of ≥ (V - 16.5)/0.0215 Ω is needed, where V is the source voltage.
The maximum value of the resistance is (V - 5)/0.0215 Ω.
Transfer characteristics
After calibrationPt100: ± (0.06 % of measurement value in K + 0.1 % of span + 0.1 K (4-wire connection))
thermocouple: ± (0.05 % of measurement value in °C + 0.1 % of span + 1 K (1.2 K for types R and S))
this includes ± 0.8 K error of the cold junction compensation
mV: ± (50 µV + 0.1 % of span)
potentiometer: ± (0.05 % of full scale + 0.1 % of span, (excludes errors due to lead resistance))
Influence of ambient temperaturedeviation of CJC included:
Pt100: ± (0.0015 % of measurement value in K + 0.006 % of span)/K ΔTamb*)
thermocouple: ± (0.02 K + 0.005 % of measurement value in °C + 0.006 % of span)/K ΔTamb*)
mV: ± (0.01 % of measurement value + 0.006 % of span)/K ΔTamb*)
potentiometer: ± 0.006 % of span/K ΔTamb*)
*) ΔTamb = ambient temperature change referenced to 23 °C (296 K)
Influence of supply voltage< 0.01 % of span
Influence of load≤ 0.001 % of output value per 100 Ω
Reaction timeworst case value (sensor breakage and/or sensor short circuit detection enabled)
mV: 1.2 s, thermocouples with CJC: 1.4 s, thermocouples with fixed ref. temp: 1.4 s, 3- or 4-wire RTD: 1.1 s, 2-wire RTD: 920 ms, Potentiometer: 3-wire connection 2.8 s, 2-wire connection 2.25 s
Galvanic isolation
Input/Other circuitsbasic insulation according to IEC 61010-1, rated insulation voltage 300 Veff
Output/supply, programming inputfunctional insulation, rated insulation voltage 50 V AC
There is no electrical isolation between the programming input and the supply.
The programming cable provides galvanic isolation so that ground loops are avoided.
Display elementsLEDs
Configurationvia PACTware
Labelingspace for labeling at the front
Directive conformity
Electromagnetic compatibility
Directive 2014/30/EUEN 61326-1:2013 (industrial locations)
Electromagnetic compatibilityNE 21:2006
Degree of protectionIEC 60529:2001
Ambient conditions
Ambient temperature-20 ... 60 °C (-4 ... 140 °F)
Mechanical specifications
Degree of protectionIP20
Connectionscrew terminals
Massapprox. 130 g
Dimensions20 x 119 x 115 mm (0.8 x 4.7 x 4.5 inch) , housing type B2
Mountingon 35 mm DIN mounting rail acc. to EN 60715:2001
General information
Supplementary informationObserve the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see
Optional accessories- power feed module KFD2-EB2(.R4A.B)(.SP)
- universal power rail UPR-03(-M)(-S)
- profile rail K-DUCT-GY(-UPR-03)
- FDT framework PACTware 5.X
- device type manager DTM Interface Technology
- adapter K-ADP-USB

Documents: KFD2-UT2-2

ManualsLanguageFile TypeFile Size
Functional Safety ManualENGPDF1486 KB
Installation and configuration guide Device Type Manager (DTM)ENGPDF8665 KB
ManualENGPDF3489 KB
Manual KF**-UT2-(Ex)*(-1)ENGPDF1682 KB
Manuel KF**-UT2-(Ex)*(-1)FRAPDF2079 KB
HandbuchGERPDF3506 KB
Handbuch Funktionale SicherheitGERPDF1494 KB
Handbuch KF**-UT2-(Ex)*(-1)GERPDF2032 KB
Installations- und Konfigurationsanleitung Device Type Manager (DTM)GERPDF8463 KB
Instruction manuals
ИнструкцииBULPDF53 KB
Návod k poużitíCZEPDF47 KB
Instruktions manualDANPDF47 KB
Instruction manualENGPDF41 KB
KasutusjuhendESTPDF44 KB
KäyttöohjeFINPDF44 KB
Manuel d'instructionsFRAPDF79 KB
BetriebsanleitungGERPDF43 KB
Οδηγίες χρήσηςGREPDF55 KB
HandleidingHOLPDF56 KB
Instruction manual / BetriebsanleitungHRVPDF55 KB
Használati útmutatóHUNPDF55 KB
Manuale di istruzioniITAPDF77 KB
Lietošanas pamācībaLAVPDF54 KB
Instrukciju vadovasLITPDF55 KB
Instrukcja obsługiPOLPDF57 KB
Manual de instruçõesPORPDF56 KB
Manual de utilizareRONPDF56 KB
Návod na poużitieSLKPDF115 KB
Manual de instruccionesSPAPDF79 KB


CADFile TypeFile Size
3-D model in IGS format / 3-D-Modell im IGS-FormatIGS---
3-D model in STP format / 3-D-Modell im STP-FormatSTP---
CAD Portal / CAD PortalLINK---
EPLAN Data Portal / EPLAN Data PortalLINK---

Approvals+Certificates: KFD2-UT2-2

Statements of complianceCertificate No.File TypeFile Size
EU-Declaration of conformity / EU-KonformitätserklärungDOC-0029PDF311 KB
Belarus Pattern ApprovalNr. 11709PDF15640 KB
Russia VNIIMS Pattern ApprovalDE.C.32.004.A No.53706PDF4041 KB
exida Functional Safety AssessmentP+F 05/03-24 R023PDF437 KB

Software: KFD2-UT2-2

Device type managersRelease InfoFile TypeFile Size
DTM Collection Interface Technology 2 / DTM Collection Interface Technology KB
Software Tools
PACTware 4.1 SP6 / PACTware 4.1 SP64.1.0.53ZIP43327 KB
PACTware 5.0 / PACTware KB

Associated Products: KFD2-UT2-2

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1-channel, Precision resistor, Conversion of 4 mA ... 20 mA/2 V ... 10 V, Packaging unit: 5 piecespa
3-pin screw terminal, For KF modules of K-System, Integrated Cold Junction Compensation, Packaging unit: 1 piece, blackpa
3-pin screw terminal, For KF modules of K-System, Packaging unit: 5 pieces greenpa
Coding of K-System terminal blocks, Coding of LB/FB-System front sockets, Packaging unit: 20 x 6 coding pinspa

Function: KFD2-UT2-2

This signal conditioner provides the galvanic isolation between field circuits and control circuits.

The device converts the signal of a resistance thermometer, thermocouple, or potentiometer to a proportional output current.

The device can also be configured as a signal splitter.

The removable terminal block K-CJC-** is available as an accessory for internal cold junction compensation of thermocouples.

A fault is signalized by LEDs acc. to NAMUR NE44 and a separate collective error message output.

The device is easily configured by the use of the PACTware configuration software.

For additional information, refer to the manual and