SAMSUNG SMRTD-8 RTD Temperature Input Module (8CH)
SAMSUNG SMRTD-8 is an 8-channel high-precision Resistance Temperature Detector (RTD) input expansion module designed for SAMSUNG industrial PLC automation platforms. Specialized in direct measurement from thermal resistance sensors—including Pt100.
Pt1000. and Ni100—it converts physical thermal resistance changes into high-resolution digital values for real-time temperature monitoring and precise closed-loop process control.
Technical Specifications Overview
| Parameter | Specification Standard |
| Model | SAMSUNG SMRTD-8 |
| Module Type | RTD Thermal Resistance Input Module |
| Input Channels | 8 isolated RTD channels |
| Compatible Sensors | Pt100, Pt1000, Ni100, Cu50 |
| Wiring Types | 2-wire, 3-wire, or 4-wire resistance connections |
| Measurement Range | -200°C to +850°C (sensor model dependent) |
| A/D Resolution | 16-bit high-precision conversion (±0.1°C resolution) |
| Conversion Speed | ≤ 40 ms per channel |
| Isolation Rating | Optocoupler galvanic isolation (field-to-bus protection) |
Product Advantages and Features
High-Accuracy Thermal Conversion: Integrated 16-bit analog-to-digital digitizer ensures ultra-low thermal drift and high signal repeatability for critical processes.
Lead Wire Resistance Compensation: Full support for 3-wire and 4-wire RTD configurations automatically cancels out line resistance variations caused by long signal cable runs.
Comprehensive Fault Diagnostics: Built-in hardware detection alerts the CPU to open-circuit (sensor wire break), short-circuit, or out-of-range temperature conditions.
Galvanic Electrical Isolation: High-grade optical isolation shields internal backplane electronics against field noise, electromagnetic interference, and ground loops.
Application Cases
Chemical & Pharmaceutical Reactors: Delivers multi-point thermal logging and tight heating/cooling feedback control in batch processing tanks.
Food Processing & Cold Storage: Monitors pasteurization temperatures, industrial baking ovens, and commercial refrigeration storage rooms.
Power Generation & Heavy Machinery: Continuous thermal monitoring of turbine bearing housings, boiler water channels, and large electric motor windings.
Other Models in the Same Series
SAMSUNG SMRTD-4: 4-channel RTD temperature input module.
SAMSUNG SMAIC-8: 8-channel analog current/voltage input module.
SAMSUNG SMAIC-12: High-density 12-channel analog current input module.
SAMSUNG SMAOC-8 / SMAOC-12: 8-channel and 12-channel analog output actuation modules.
SAMSUNG SMCPU-08: Main central processing unit module.
Installation and Maintenance
Installation: Shut off all power supplies to the controller rack before mounting. Align the backplane connector with the designated slot and press firmly until seated. Tighten top and bottom retaining screws.
Field Wiring: Use twisted-pair shielded cables for RTD connections. Connect the cable shield to ground at a single cabinet point to prevent earth loop noise.
Maintenance: Regularly inspect terminal block screw torque to maintain low contact resistance. Monitor front-panel LED indicators during routine field inspections for fast fault identification.