Description
Technical Specifications
- Product Model: P+F KFD2-UT2-Ex1
- Brand: Pepperl+Fuchs
- Warranty: One Year
- Input Voltage: 20–30 VDC (24 VDC nominal via Power Rail or terminals)
- Operating Temperature: -20°C to +60°C
- Storage Temperature: -40°C to +70°C
- Response Time: Fast analog signal conversion for process measurement
- Protection Class: IP20
- Accuracy Class: ±0.1% full scale typical measurement accuracy
- Output Frequency: Analog output bandwidth suitable for process temperature monitoring
- Rated Current Range: 0/4–20 mA analog output (active or passive mode)
- Communication Interface: Analog process signal interface with programming port
- Supported Protocols: Configurable via PACTware configuration software
- Overload Capacity: Galvanic isolation ≥1.5 kV between input, output, and power supply
- Sensor Compatibility: Thermocouples, RTDs (e.g., Pt100), potentiometers, or millivolt inputs
- Dimensions: 20 mm × 119 mm × 115 mm
- Mounting Type: DIN-rail mounting (EN 60715)
- Functional Safety: SIL 2 according to IEC/EN 61508 / IEC/EN 61511
Product Overview
The P+F KFD2-UT2-Ex1 is a universal temperature converter and intrinsically safe signal isolator designed for hazardous-area industrial applications. Manufactured by Pepperl+Fuchs, this module provides safe signal conditioning and transmission for temperature sensors installed in explosive atmospheres such as oil refineries, chemical plants, and offshore production facilities.
The module accepts multiple sensor types—including thermocouples, RTDs, potentiometers, and millivolt signals—and converts them into standardized 0/4–20 mA analog outputs for integration with PLC, DCS, or SCADA systems. By incorporating intrinsic safety protection and galvanic isolation, the device ensures that electrical energy entering hazardous zones remains within safe limits while still enabling accurate process measurement.
With a compact DIN-rail design, configurable parameters via PACTware software, and diagnostic features such as line-fault detection and sensor burnout monitoring, the module provides reliable temperature signal conditioning for critical industrial processes. Pepperl+Fuchs signal isolators like this unit are commonly used in machinery protection systems and process instrumentation networks where safe and accurate measurement is essential.
Key Functions
Universal Temperature Sensor Interface
The module supports a wide range of temperature measurement inputs, including thermocouples, RTDs such as Pt100, potentiometers, and millivolt signals. This flexibility allows a single module to be used across many process measurement scenarios.
Intrinsic Safety Signal Isolation
The module isolates hazardous-area sensor circuits from safe-area control systems using intrinsic safety barriers. This design prevents excessive energy from entering explosive environments while still enabling reliable measurement signal transmission.
Analog Signal Conversion
The device converts temperature sensor signals into a standardized 0/4–20 mA process signal, ensuring compatibility with industrial control platforms such as PLCs and distributed control systems.
Fault Detection and Diagnostics
Integrated line-fault detection (LFD) and sensor burnout monitoring alert operators when wiring faults or sensor failures occur. This feature improves reliability in safety-critical process monitoring applications.
Configurable Operation via Software
Using configuration software, engineers can set measurement ranges, linearization curves, and output parameters. This allows the module to adapt to different sensor types and process conditions.
Application Scenarios
Hazardous-Area Temperature Monitoring
In oil and gas or chemical processing plants, temperature sensors installed in hazardous zones require intrinsically safe interfaces. The module safely transfers these measurements to the control system.
Process Control Systems
Distributed control systems rely on stable temperature measurement signals for process regulation. The module conditions sensor signals and delivers reliable analog outputs to control equipment.
Power Generation Instrumentation
In power plants, temperature sensors monitor boilers, turbines, and auxiliary systems. The module ensures safe and accurate transmission of these signals to monitoring platforms.
Industrial Equipment Protection
Critical rotating equipment such as compressors and pumps often requires temperature monitoring for bearings and lubrication systems. The module enables reliable sensor integration into machine protection systems.
