The **M2RTS-S-AZ-R2/CE** is a high-performance **RTD (Resistance Temperature Detector) Transmitter**, specifically a signal conditioner from the M2 Series manufactured by **M-System**. This electronic component is designed to convert signals from a temperature sensor (like a Pt100) into a standard analog process signal (like 4-20mA or 0-10V) for PLC or DCS integration. --- ### 1. Breakdown of the Model Code The alphanumeric string defines the specific electronic configuration of the unit: | Code Segment | Meaning | Description | | :--- | :--- | :--- | | **M2RTS** | Model Series | RTD Transmitter (Plug-in base type) | | **-S** | Input Type | RTD Input (Standard range) | | **-A** | Output Type | 4 – 20 mA DC (Current output) | | **-Z** | Power Input | 200 – 240V AC | | **-R2** | Option | Custom configuration or specific design revision | | **-SLASHCE** | Certification | CE Marking (European Conformity) | --- ### 2. Key Electronic Specifications The internal circuitry utilizes precision operational amplifiers and isolation transformers to ensure signal integrity. * **Input Impedance:** High input impedance to prevent loading of the RTD element. * **Isolation:** 2000V AC isolation between Input, Output, and Power. * **Response Time:** Typically $\leq$ 0.5 seconds (0 to 90%). * **Burnout Protection:** Upscale burnout is standard (output goes to max if sensor wire breaks). * **Accuracy:** $\pm$ 0.1% of span. --- ### 3. Electronic Architecture The device consists of three primary electronic stages: 1. **Input Conditioning Stage:** * Excites the RTD with a constant current. * Uses a 3-wire compensation circuit to eliminate lead-wire resistance errors. 2. **Isolation Stage:** * Employs an optocoupler or transformer-based isolation to prevent ground loops and protect sensitive control equipment. 3. **Output Driver:** * Converts the processed signal into a linearized DC current or voltage. --- ### 4. Wiring Diagram Representation The unit typically uses a socket-mount base for easy replacement without disconnecting wires. ```text [ Power ] L / N <---- Connects to 200-240V AC [ Input ] 1, 2, 3 <---- Connects to RTD (A, B, B') [ Output] + / - <---- Connects to 4-20mA Loop ``` ---