Product Summary
The FR-T0400K temperature acquisition module delivers four precise input channels for critical industrial processes. It supports a wide range of thermocouple types including K, J, R, S, B, E, T, N, and C. The module also reads NTC and RTD sensors like PT100, PT1000, Cu50, and NI1000. You can measure temperatures from -200°C up to 850°C depending on your sensor choice. This device provides an accuracy of ±0.5% or ±1°C at 25°C ambient temperature. Its compact design measures only 111 by 18 by 76 millimeters and weighs just 65 grams. The module consumes a maximum power of 50mA at 5.0Vdc. This makes the FR-T0400K an ideal solution for space-constrained industrial control cabinets.
Expert Technical Evaluation & Performance Review
Sensor Compatibility and Measurement Range

The FR-T0400K supports an extensive list of thermocouple and resistance temperature detectors. You can connect K, J, R, S, B, E, T, N, and C type thermocouples directly to its four channels. For high-temperature applications, the module measures up to 850°C using PT700 sensors. It also handles PT1000 sensors up to 600°C with excellent linearity. The module accurately reads Cu50 and Cu100 sensors from -50°C to 150°C. It processes NI100 and NI1000 sensors across a range from -60°C to 180°C. This broad compatibility allows engineers to standardize on one module for diverse thermal monitoring tasks.
Accuracy and Signal Integrity
The FR-T0400K achieves a measurement accuracy of ±0.5% or ±1°C at 25°C ambient temperature. For thermocouple inputs, the module delivers an accuracy of ±0.3% or ±1°C of the displayed value. This ensures reliable temperature readings even in demanding industrial environments. NTC inputs receive even tighter precision at ±0.1% or ±1°C of the displayed value. The module uses advanced signal conditioning to minimize noise interference on long cable runs. This performance meets the strict requirements for process control and quality assurance applications.

Installation and Wiring Guidance
Mount the FR-T0400K securely on a standard DIN rail inside your control enclosure. Connect your thermocouple or RTD wires to the dedicated screw terminals on the module front. Ensure you use the correct thermocouple extension wire for your specific sensor type. Apply the sensor to your measurement point using proper thermal paste or direct contact. Power the module with a stable 5.0Vdc supply that can deliver up to 50mA. The compact 18mm width allows you to install multiple modules side by side without wasting panel space. Verify all connections before applying power to prevent damage to the sensitive input circuitry.
Troubleshooting and Longevity
Check all sensor wiring connections if the module reports erratic temperature values. Ensure the ambient temperature around the module stays within its specified operating range. Clean the terminal blocks periodically to remove dust and corrosive contaminants. Verify your sensor type selection matches the configuration in your control software. Replace any damaged thermocouple probes immediately to maintain measurement accuracy. The module’s low power consumption of 50mA reduces internal heat generation and extends component life. Perform an annual calibration check against a known temperature standard to confirm ongoing precision.

Logistics & Standard Packaging Details
- One Flexem FR-T0400K temperature acquisition module
- Product documentation and quick-start guide
- Express delivery shipping is available via FedEx, UPS, and DHL
