Pepperl Fuchs KFD0-TR-Ex1 RTD Converter (043691)

The P&F KFD0-TR-Ex1 is a single-channel, loop-powered RTD converter designed for intrinsic safety applications. It accepts 2- or 3-wire Pt100 RTDs from hazardous areas and outputs a temperature-linear 4 … 20 mA signal to the safe area. With DIP switch-configurable ranges, sensor breakage detection, and selectable linearization up to 375 °C, the device offers flexibility and simplicity for field installations.

Technical Specifications

• Model: KFD0-TR-Ex1
• Function: Loop-Powered RTD Converter
• Input Type: Pt100 (2- or 3-wire)
• Output Signal: 4 … 20 mA, temperature-linear
• Configuration: DIP switch, rotary switch, potentiometers
• Temperature Range:

  –200 … +800 °C (non-linearized)

  –30 … +375 °C (linearized)

Electrical Characteristics

• Rated Voltage: 12 … 35 V DC (loop powered)
• Power Dissipation: 0.4 W
• Input Terminals: 1, 2–, 3+ (field side)
• Output Terminals: 8–, 9+ (control side)
• Output Load: (U – 12 V) / 0.02 A
• Output Current Limit: ≤ 35 mA
• Fault Upscale: ≥ 22 mA

Measurement & Accuracy

• Measurement Ranges: Configurable via DIP switch
• Accuracy: ±0.1% of full-scale value
• Lead Resistance: Max. 100 Ω per line
• Measuring Current: Approx. 1 mA
• Temp. Drift: 0.015%/K or ±10 mΩ/K
• Supply Voltage Influence: 6.5 ppm/V
• Rise Time: 250 ms

Environmental & Mechanical

• Operating Temperature: –20 … +60 °C
• Protection: IP20
• Mounting: 35 mm DIN rail (EN 60715)
• Dimensions: 20 × 119 × 115 mm (W × H × D)
• Weight: Approx. 150 g

Hazardous Area Certifications

• Zones: Zone 0, 1, 2 / Div. 1, 2
• ATEX Marking: II (1)GD [EEx ia] IIC
• IECEx Marking: [Ex ia] IIC (Zone 0)
• Voltage Uo: 16.1 V
• Current Io: 33 mA
• Power Po: 131 mW
• Galvanic Isolation: Input/Output (375 V peak)

Key Features & Benefits

✅ Loop Powered: No separate power supply required.

✅ Wide Temperature Range: Up to 800 °C without linearization.

✅ Simple Setup: DIP switch & rotary switch configuration.

✅ Sensor Break Detection: Ensures process reliability.

✅ Hazardous Area Rated: ATEX, IECEx, CSA approved.

📦 Buy Pepperl+Fuchs KFD0-TR-Ex1 from Drive Outlet Megastore

At Drive Outlet Megastore, we offer unbeatable KFD0-TR-Ex1 prices. This compact and reliable loop-powered isolator delivers precise 4–20 mA outputs in hazardous areas, ideal for petrochemical, pharmaceutical, and process automation environments.

Ships fast from UK stock with a full 2-year warranty.

Contact us now to get a quote or download the technical datasheet.