The **M2RTS-R-2G-R2** is a high-precision, industrial-grade RTD (Resistance Temperature Detector) transmitter, typically manufactured by companies like **M-System**. This device is designed to convert signals from a temperature sensor into a standard industrial signal (like 4-20mA or 0-10V). --- ### ## Technical Specifications Below are the primary electronic characteristics and specifications for this specific model: | Component / Feature | Description | | :--- | :--- | | **Input Type** | RTD (Pt 100, JPt 100, etc.) | | **Output Type** | Current or Voltage (Standard DC signal) | | **Power Input** | 100 – 240V AC (Standard for the 'R2' series) | | **Configuration** | 2-wire or 3-wire RTD input support | | **Isolation** | 3-way isolation (Input to Output to Power) | | **Housing** | Plug-in style base for DIN rail mounting | --- ### ### Key Electronic Subsystems 1. **Input Conditioning Circuit**: This section uses a constant current source to excite the RTD sensor. It measures the resistance change and compensates for lead-wire resistance (in 3-wire setups) to ensure accuracy over long distances. 2. **Galvanic Isolation**: The "3-way isolation" protects the internal electronics and connected PLC/DCS from surges, ground loops, and electrical noise. It separates the power supply, the sensitive sensor input, and the analog output signal. 3. **Linearization Module**: RTD resistance is not perfectly linear relative to temperature. The internal circuitry applies a linearization curve to ensure the output signal (e.g., 4mA at 0°C and 20mA at 100°C) is proportional to the actual temperature. 4. **Zero/Span Adjustments**: The front panel usually features multi-turn potentiometers. These allow fine-tuning of the electronic "Zero" (minimum signal) and "Span" (maximum signal) without disconnecting the wiring. --- ### ### Terminal Connection Logic *Note: Refer to the specific wiring diagram on the side of the unit casing before installation.* ```text [ Power Supply L/N ] -> Terminals for 100-240V AC [ Input A / B / B' ] -> Terminals for RTD sensor wires [ Output + / - ] -> Terminals for PLC / Controller loop ``` ---