Serviceline Industrial Sensors
Serviceline Explosion Protection

Thermocouple Converter KFD0-TT-1

  • 1-channel signal conditioner
  • 24 V DC supply (loop powered)
  • Thermocouple input
  • Output 4 mA ... 20 mA
  • Internal cold junction compensation
  • Sensor breakage detection
  • DIP switch selectable ranges

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, also apply to Pepperl+Fuchs AG.

Download the complete datasheet as a PDF:

Datasheet excerpt: Technical data of  KFD0-TT-1

General specifications
Signal typeAnalog input
Rated voltage12 ... 35 V DC loop powered
Power dissipation0.4 W
Connection sidefield side
Connectionterminals 1+, 2-, 3-
thermocouples type E, J, K, N, R, S or T
cold junction referenced to 0 °C (32 °F)
Lead resistancemax. 100 Ω per line
Currentlead monitoring ON: ≤ 15 nA; OFF: ≤ 1 nA
Connection sidecontrol side
Connectionterminals 9+, 8-
Load(U -12 V) / 0.02 A
Current output4 ... 20 mA , limited to ≤ 35 mA
Fault signaldownscaling ≤ 3 mA , upscaling ≥ 22 mA
Transfer characteristics
Measurement rangespan 4 ... 100 mV, zero point -12 ... 60 mV , both adjustable
After calibration0.1 % of full-scale value ± 1 K for the cold junction
Temperature effect temperature deviation 0.015 % of the span/K or 1.5 µV/K
cold junction ± 2 K (calibrated at Tamb = 20 °C (68 °F))
Influence of supply voltage6.5 ppm/V
Characteristic curvethe output voltage is linearly proportionate to the input voltage (not to temperature)
Rise time250 ms
Galvanic isolation
Input/Outputsafe isolation according to EN 50178, rated insulation voltage 253 Veff
Control elementsDIP-switch
rotary switch
Configurationvia DIP switches
via rotary switch
Labelingspace for labeling at the front
Directive conformity
Electromagnetic compatibility
Directive 2014/30/EUEN 61326-1:2013 (industrial locations)
Insulation coordinationEN 50178
Galvanic isolationEN 50178
Degree of protectionIEC 60529
Ambient conditions
Ambient temperature-20 ... 60 °C (-4 ... 140 °F)
Mechanical specifications
Degree of protectionIP20
Connectionscrew terminals
Massapprox. 150 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

Documents: KFD0-TT-1

ManualsLanguageFile TypeFile Size
Manual Signal Conditioners K-SystemENGPDF694 KB
Handbuch Signaltrenner K-SystemGERPDF698 KB
Manual Signal Conditioners K-SystemRUSPDF3736 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

Approvals+Certificates: KFD0-TT-1

Statements of complianceCertificate No.File TypeFile Size
EU-Declaration of conformity / EU-KonformitätserklärungDOC-2203PDF649 KB
Belarus Pattern ApprovalNr. 11709PDF15640 KB
Russia VNIIMS Pattern ApprovalDE.C.32.004.A No.53706PDF4041 KB

Function: KFD0-TT-1

This isolated signal conditioner is a loop-powered isolator that converts thermocouple inputs to a 4 mA ... 20 mA signal and provides isolation for non-intrinsically safe applications.

The internal cold junction compensation can be bypassed by using terminals 1 and 3.

The output current is linear to input voltage, not proportional to temperature. Zero, span, and burnout detection are field-configurable.