SAMSUNG SMRTD-8 RTD Pt100 Temperature Input Module (8CH)
SAMSUNG SMRTD-8 RTD Pt100 Temperature Input Module (8CH)
SAMSUNG SMRTD-8 is an 8-channel high-precision Resistance Temperature Detector (RTD) input module designed for SAMSUNG industrial PLC automation platforms. Specialized in direct interfacing with Pt100 platinum RTD sensors, it digitizes real-time thermal resistance measurements into high-resolution temperature data without requiring external signal transmitters.
Technical Specifications
| Parameter | Technical Standard / Specification |
| Model | SAMSUNG SMRTD-8 |
| Input Channels | 8 RTD input channels |
| Sensor Type | Pt100 (Platinum RTD, α = 0.00385) |
| Wiring Configuration | 2-wire, 3-wire, or 4-wire resistance connection |
| Temperature Measurement Range | -200°C to +850°C (-328°F to +1562°F) |
| Resolution & Accuracy | 16-bit A/D conversion (±0.1°C accuracy) |
| Conversion Speed | ≤ 40 ms per channel |
| Isolation Rating | Optocoupler galvanic isolation between field inputs and internal bus |
Product Advantages and Features
High-Precision Thermal Conversion: Integrated 16-bit analog-to-digital converter delivers fine 0.1°C thermal resolution for stringent temperature loops.
Lead Wire Resistance Compensation: Supports 3-wire and 4-wire RTD configurations to automatically negate measurement errors caused by long field cable distances.
Comprehensive Diagnostic Monitoring: Features built-in sensor fault detection for open-circuit (broken wire), short-circuit, and out-of-range thermal conditions.
Noise Filtering & Industrial Isolation: High-grade optical isolation shields the control system from electromagnetic noise, voltage surges, and ground loops.
Application Cases
Chemical Processing Plants: Continuous multi-point monitoring of reactor temperatures, distillation columns, and heat exchangers.
Food & Beverage Processing: Thermal regulation during pasteurization, industrial baking ovens, and cold storage refrigeration units.
Power Generation & HVAC Systems: Monitoring boiler water feed temperatures, turbine bearing temperatures, and facility air handling units.
Other Models in the Same Series
SAMSUNG SMRTD-4: 4-channel RTD temperature input module.
SAMSUNG SMAIC-8: 8-channel analog voltage/current input module (4–20mA / 0–10V).
SAMSUNG SMAOC-8: 8-channel analog output module.
SAMSUNG SMCPU-08: Central processing unit controller.
Installation and Maintenance
Installation: Ensure power to the PLC rack is completely off prior to inserting the module. Align the edge connector carefully into the system backplane and fasten securing screws.
Wiring Practice: Use shielded 3-wire or 4-wire cable runs for Pt100 sensors. Connect the shielding ground wire at a single point on the PLC cabinet side to prevent ground loops.
Maintenance: Periodically check terminal block screw tightness to prevent contact resistance changes from affecting temperature readings. Monitor channel LEDs for instant fault notification.