Pepperl+Fuchs KFD2-UT2-1 Universal Temperature Converter

USD 182.40

1-channel universal temperature converter with 20-30V DC supply, 0/4-20mA output, 3-port galvanic isolation, IP20, and SIL 2 rating.

SKU PEPPERL-FUCHS-KFD2-UT2-1 Category
Top Brands > PEPPERL+FUCHS > PEPPERL+FUCHS Universal Temperature Converters

Pepperl+Fuchs KFD2-UT2-1 Universal Temperature Converter

Model Identifier KFD2-UT2-1
Official Part Number KFD2-UT2-1
GTIN Standard NA

Technical Overview

1-channel universal temperature converter with 20-30V DC supply, 0/4-20mA output, 3-port galvanic isolation, IP20, and SIL 2 rating.

Key Features

  • Single channel signal conditioner.
  • 24 V DC supply (Power Rail compatible).
  • Thermocouple, RTD, potentiometer or voltage input.
  • Analog current output 0/4 mA ... 20 mA (sink or source mode).
  • Configurable by PACTware software.
  • Line fault (LFD) and sensor burnout detection.
  • Up to SIL 2 functional safety according to IEC 61508 / IEC 61511.
  • 3-port galvanic isolation between input, output, and power supply.
  • LED display and programming socket interface.
  • Removable terminals.

Universal input for various temperature sensors and potentiometers, coupled with robust 3-port galvanic isolation and SIL 2 functional safety capability for secure and reliable signal conditioning in industrial environments.

Technical Specification Matrix

ParameterValue
Signal TypeAnalog input
Input TypesThermocouple, RTD, Potentiometer, Voltage (-100 to 100 mV selectable)
RTD TypesPt10, Pt50, Pt100, Pt500, Pt1000 (EN 60751: 1995); Pt10GOST, Pt50GOST, Pt100GOST, Pt500GOST, Pt1000GOST (6651-94); Cu10, Cu50, Cu100 (P50353-92); Ni100 (DIN 43760)
Thermocouple TypesB, E, J, K, N, R, S, T (IEC 584-1: 1995); L (DIN 43710: 1985); TXK, TXKH, TXA (P8.585-2001)
Potentiometer Input Range0 ... 20 kΩ (2-wire), 0.8 ... 20 kΩ (3-wire)
Input Resistance (mV)≥ 1 MΩ (-100 ... 100 mV)
Measuring Current (RTD)Approx. 200 µA
Lead Resistance (RTD)≤ 50 Ω per lead
Output TypeAnalog Current Output
Output Current Range0 ... 20 mA or 4 ... 20 mA
Supply Voltage20 ... 30 V DC (Rated voltage Ur)
Power Consumption≤ 0.98 W
Degree of ProtectionIP20
Ambient Temperature-20 ... 60 °C
Safety Integrity Level (SIL)SIL 2 acc. to IEC 61508 / IEC 61511
Galvanic Isolation3-port isolation (Input/Output/Supply). Input/Other circuits basic insulation 300 Veff. Output/Supply, programming input functional insulation 50 V AC.
ConnectionScrew Terminal, DIN Rail Mount
Physical Weight (kg)0.11
Dimensions L x W x H (cm)11.43 x 2.03 x 11.94

Industrial Applications

1. Temperature Monitoring in Chemical Processing Plants

In chemical reactors or distillation columns, precise and reliable temperature monitoring is crucial for process control and safety. This device can convert signals from various temperature sensors (RTDs, thermocouples) located in potentially noisy environments into a standardized 4-20mA signal for the control system.

Problem Solved

Provides 3-port galvanic isolation to prevent ground loops and protect control systems from field-side electrical disturbances, ensuring signal integrity. Its SIL 2 rating enhances the safety of the temperature monitoring loop, reducing the risk of hazardous events. The 0/4-20mA output is a standard for robust industrial control systems.

RTDThermocouple4-20mAGalvanic IsolationSIL 2Process ControlNoise Immunity

2. Industrial Oven and Furnace Temperature Regulation

For industrial ovens or furnaces requiring accurate temperature regulation, this universal temperature converter can interface with different types of temperature sensors (e.g., K-type thermocouples for high temperatures, Pt100 RTDs for precision at lower temperatures) and provide a robust signal to a PID controller or similar control unit.

Problem Solved

The universal input capability allows a single device type to handle various sensor technologies (RTD, TC, Potentiometer, Voltage), simplifying design and spare parts management. Sensor burnout detection immediately flags sensor failures, preventing incorrect control actions and potential product damage or quality issues. The 20-30V DC supply is standard for control cabinet integration.

RTDThermocouplePID ControlSensor Burnout DetectionUniversal InputIndustrial HeatingProcess Optimization

3. Remote Potentiometer Position Feedback in Machine Automation

In machinery applications where the position of a mechanical component, such as a valve or damper, is indicated by a potentiometer, this converter transforms the potentiometer's resistance value into a proportional 4-20mA current signal for reliable, long-distance transmission to a PLC or DCS.

Problem Solved

The ability to accept potentiometer input and convert it to a robust 4-20mA current signal overcomes issues like voltage drop over long cable runs and electrical noise common in industrial environments. The galvanic isolation further protects the sensitive control system from voltage spikes or ground potential differences originating from the machinery, ensuring accurate and stable position feedback.

PotentiometerPosition Feedback4-20mAPLC/DCS IntegrationLong-Distance TransmissionNoise ImmunityGalvanic Isolation
Select your currency