P+F KFD2-VR4-Ex126 Signal Isolation Safety Barrier

P+F KFD2-VR4-Ex126 Signal Isolation Safety Barrier
I. Product Description
The Pepperl+Fuchs KFD2 series rail-mounted isolation safety barrier belongs to an intrinsically safe general-purpose temperature/mV signal isolator, used for isolating and preventing explosion in hazardous areas for thermocouples, thermoresistors, and mV sensor signals. It is installed in the safe zone to achieve explosion-proof isolation, signal conversion, and circuit protection.

Key Technical Parameters
Channel: Single channel
Applicable signals: Thermocouples, thermoresistors, mV voltage signals
Explosion-proof grade: Ex ia IIC
Power supply voltage: 20～30 V DC
Installation method: 35 mm DIN rail installation
Operating temperature: -20 ℃ ~ +60 ℃
Isolation strength: Electrical isolation for input/output/power supply of all three parties
Response characteristics: Programmable signal processing
Shell protection: IP20
Certifications: ATEX, IECEx

Product Performance
Three-way isolation (hazardous side, safe side, power supply), effectively blocking interference and suppressing ground loops;
Supports multiple thermocouples, RTD thermoresistors, and mV sensors for connection, with flexible configuration;
Limits the energy sent to the hazardous area, meeting the intrinsic safety explosion-proof requirements;
Has a line break monitoring function, capable of diagnosing sensor faults;
Modular thin body, saving installation space in control cabinets;
Supports continuous long-term stable operation, suitable for strong interference working conditions in chemical, petrochemical, and metallurgical industries.

Application Fields
Temperature measurement circuits in explosion-proof areas of oil, chemical, and pharmaceutical industries
Thermocouple and thermoresistor signal collection in oil platforms, storage tank areas
Temperature monitoring systems in explosion-proof workshops of power plants and metallurgy
Transmission of various mV-level sensor signals in hazardous areas
Intrinsic safety signal interfaces of explosion-proof DCS and PLC systems

Related Models of the KFD2 Series
KFD2-UT2-Ex1 (This model, general-purpose temperature/mV signal isolator)
KFD2-STC4-Ex1 Analog input safety barrier
KFD2-SCD2-Ex1.LK Current signal isolator
KFD2-RR-Ex1 Special safety barrier for thermoresistors
KFD2-PT2-Ex1 Safety barrier for thermocouples