Pepperl+Fuchs KFD0-TR-Ex1 RTD Isolated Barrier Converter

USD 199.68

1-channel isolated barrier for 2- or 3-wire Pt100 RTD input, providing a 4-20mA output with selectable linearization for intrinsic safety applications.

SKU PEPPERL-FUCHS-KFD0-TR-EX1 Category
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Pepperl+Fuchs KFD0-TR-Ex1 RTD Isolated Barrier Converter

Model Identifier KFD0-TR-Ex1
Official Part Number KFD0-TR-EX1
GTIN Standard NA

Technical Overview

1-channel isolated barrier for 2- or 3-wire Pt100 RTD input, providing a 4-20mA output with selectable linearization for intrinsic safety applications.

Key Features

  • 1-channel isolated barrier
  • 24 V DC supply (loop powered)
  • 2- or 3-wire Pt100 RTD input
  • Output 4 mA ... 20 mA, temperature linearization selectable
  • DIP switch selectable ranges/functions
  • Sensor breakage detection
  • Intrinsic safety applications for hazardous areas
  • Field calibration via DIP switches, rotary switches, and potentiometers
  • Mounting on 35 mm DIN mounting rail

1-channel isolated barrier with 24 V DC loop-powered supply, designed for 2- or 3-wire Pt100 RTD input, and providing a 4 mA ... 20 mA output with selectable temperature linearization.

Technical Specification Matrix

ParameterValue
Signal typeAnalog input
Rated voltage (Supply)12 ... 35 V DC loop powered
Power dissipation0.4 W
Input connection sideField side (terminals 1, 2-, 3+ suitable for Pt100, 2- and 3-wire connection)
Lead resistanceMax. 100 Ω per line
Measuring currentApprox. 1 mA
Output connection sideControl side (terminals 9+, 😎
Current output4 ... 20 mA, limited to ≤ 35 mA
Fault signalUpscaling ≥ 22 mA (limited to 35 mA)
Measurement range (without linearization)Span 25 ... 800 °C (77 ... 1472 °F), adjustable zero point -200 ... 400 °C (-328 ... 752 °F)
Measurement range (with linearization)Span 25 ... 375 °C (77 ... 707 °F), adjustable zero point -30 ... 375 °C (-22 ... 707 °F)
Galvanic isolationInput/Output available
Ambient temperature-20 ... 60 °C (-4 ... 140 °F)
Degree of protectionIP20
EU-type examination certificateZELM 00 ATEX 0036
CSA approval1029981
Physical Weight (kg)0.15
Dimensions L x W x H (cm)11.5 x 2 x 11.9

Industrial Applications

1. Hazardous Area Temperature Monitoring in Chemical Reactors

In chemical processing plants, especially where flammable gases or dusts are present (hazardous areas), precise temperature monitoring of reactors is crucial for safety and process control. This RTD converter provides intrinsic safety, allowing a Pt100 RTD to be installed directly in the hazardous environment while transmitting a safe, linearized 4-20mA temperature signal to the control system in a safe area.

Problem Solved

Safely converts RTD temperature signals from potentially explosive atmospheres to a standard control signal, preventing ignition sources and ensuring regulatory compliance.

Intrinsic SafetyHazardous AreaPt100 RTD4-20mA OutputTemperature LinearizationChemical ReactorProcess ControlATEX

2. Temperature Control in Pharmaceutical Fermentation Vessels

Pharmaceutical manufacturing often involves fermentation or reaction vessels that require accurate temperature control and may be located in classified hazardous areas. The KFD0-TR-Ex1 facilitates the connection of Pt100 RTDs within these vessels to a PLC or DCS, providing an isolated and reliable 4-20mA signal for precise temperature regulation, critical for product quality and yield.

Problem Solved

Enables accurate and intrinsically safe temperature feedback from sensitive pharmaceutical processes in hazardous locations to ensure product integrity and operational safety.

Pharmaceutical ManufacturingFermentationPt100 RTD4-20mA OutputIsolated BarrierHazardous LocationTemperature RegulationDCS/PLC

3. Remote Pipeline Temperature Monitoring in Explosive Environments

Oil and gas pipelines traverse vast distances and often pass through areas classified as hazardous due to the presence of hydrocarbons. This RTD converter can be deployed to monitor critical temperature points (e.g., at pumping stations or storage facilities) within these explosive environments, converting Pt100 RTD readings into a standardized 4-20mA signal for remote telemetry and SCADA systems. Its robust design and intrinsic safety are ideal for such demanding, distributed applications.

Problem Solved

Provides intrinsically safe and reliable temperature data acquisition from remote, hazardous oil & gas infrastructure for operational efficiency and leak detection.

Oil & GasPipeline MonitoringHazardous AreaPt100 RTD4-20mA OutputIntrinsic SafetySCADARemote TelemetryExplosive Environment
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