The **M2RTS-R-DE-R2/N** is a specific model within a series of industrial signal conditioners/transmitters, typically manufactured by companies like **M-System**. This device is a RTD (Resistance Temperature Detector) transmitter designed to convert a temperature signal into a standardized analog output. --- ### 1. Model Breakdown (Nomenclature) The alphanumeric code describes the specific electronic hardware configuration of the unit: | Code Segment | Description | Specific Detail | |:---|:---|:---| | **M2RTS** | Series Name | Mini-M Series RTD Transmitter | | **-R** | Power Input | 24V DC | | **-DE** | Input Type | Pt 100 (DIN) temperature sensor | | **-R2** | Output Type | 4 – 20 mA DC (Current Loop) | | **-N** | Options | Special specification (often refers to specific calibration or coating) | --- ### 2. Technical Specifications Below are the core electronic characteristics of the M2RTS-R-DE-R2/N: #### Input Specifications (RTD) * **Sensor Type:** Pt 100 (3-wire system). * **Excitation Current:** Typically 2 mA. * **Allowable Leadwire Resistance:** Usually max. 20 $\Omega$ per wire. #### Output Specifications (Analog) * **Signal:** 4 to 20 mA DC. * **Load Resistance:** Max 600 $\Omega$. * **Response Time:** $\leq$ 0.5 seconds (0 – 90%). #### General Electronics * **Isolation:** 3-way isolation (Input to Output to Power). * **Isolation Resistance:** 100 M$\Omega$ at 500V DC. * **Dielectric Strength:** 2000V AC @ 1 minute. * **Accuracy:** $\pm$ 0.1% of span. --- ### 3. Wiring Diagram (Simplified) To integrate this part into a circuit, the following terminal logic is generally used: ```text [ Power Supply ] --- (+) Terminal 7 (24V DC) --- (-) Terminal 8 (GND) [ RTD Input ] --- Terminal 1 (A) --- Terminal 2 (B) --- Terminal 3 (B) [ Current Output ]-- (+) Terminal 5 --- (-) Terminal 6 ``` --- ### 4. Key Electronic Features * **Linearization:** The internal circuitry automatically compensates for the non-linear resistance characteristics of the Platinum sensor to ensure a linear 4-20mA output relative to temperature. * **Burnout Protection:** The device includes a "Burnout" feature. If the RTD wire breaks, the output will typically drive to a "High" (above 20mA) or "Low" (below 4mA) state to alert the control system (PLC/DCS). * **Zero/Span Adjustment:** Physical potentiometers are usually located on the front of the module to allow manual calibration of the 0% and 100% points.