The **W2TS-3AA-R2/CE** is a high-precision, digital temperature transmitter (signal conditioner) manufactured by **M-System**. It is designed to convert signals from Thermocouples (TC) into a standardized DC output, typically for PLC or DCS integration. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Input Type** | Thermocouple (K, E, J, T, B, R, S, C, N, U, L) | | **Output Type** | DC Voltage or Current (Configurable) | | **Power Input** | 24V DC (±10%) | | **Response Time** | ≤ 0.5 seconds (0 – 90%) | | **Isolation** | 3-way (Input to Output to Power) | | **Accuracy** | ±0.1% of span (depends on TC type) | | **Mounting** | DIN Rail Mounting (Ultra-slim 7mm width) | --- ### 2. Core Electronic Components & Features The W2TS series utilizes a "Two-wire" or "Three-way isolation" architecture depending on the specific sub-model, focusing on space-saving and signal integrity. #### A. Microprocessor-Based Conditioning Unlike old analog transmitters, this unit uses a microprocessor to linearize the non-linear voltage curve of thermocouples. It performs: * **Cold Junction Compensation (CJC):** An internal thermistor measures the temperature at the terminal block to compensate for the thermoelectric effect at the connection point. * **Linearization:** Digital mapping of the mV input to a linear temperature scale. #### B. 3-Way Isolation The device provides electrical isolation between the **Input**, **Output**, and **Power supply**. This is critical in industrial environments to: * Prevent ground loops. * Protect sensitive PLC/DCS cards from high-voltage surges on the sensor side. * Reduce electromagnetic interference (EMI). #### C. Burnout Protection The electronic circuit includes a "Burnout" detection feature. If the thermocouple wire breaks, the transmitter can be configured to: * **Upscale:** Output goes to the maximum (e.g., 20mA or 10V). * **Downscale:** Output goes to the minimum (e.g., 4mA or 0V). --- ### 3. Connection Diagram Overview ```text [ Thermocouple ] ----> [ W2TS Transmitter ] ----> [ PLC / Controller ] (Input) (Signal Conversion) (Output) (Power: 24V DC) ``` --- ### 4. Certification (CE Mark) The **/CE** suffix indicates that the part complies with European safety and electromagnetic compatibility standards: * **EN 61326-1:** Electrical equipment for measurement, control, and laboratory use (EMC requirements). * **Low Voltage Directive:** Ensures the internal power components are safe for industrial use.