The **W2TS-2AC-R/Q** is a specific model within a series of signal conditioners/transducers, typically manufactured by companies like **M-System**. These devices are designed to convert standard analog signals or temperature inputs into isolated DC outputs. --- ### 1. Technical Specifications The model code defines the specific electronic characteristics of the unit: | Feature | Specification | |:---|:---| | **Model Series** | W2TS (Dual Output Temperature Transmitter) | | **Input Type** | Thermocouple (T/C) | | **Output 1** | 4 – 20 mA DC | | **Output 2** | 1 – 5 V DC (or other standard voltage/current) | | **Power Input (2AC)** | 100 – 240V AC | | **Configuration (R/Q)** | "R" often denotes specific response/range; "Q" indicates special options/coatings. | --- ### 2. Core Electronic Components The internal circuitry is divided into three primary isolated stages to ensure signal integrity: 1. **Input Conditioning Stage:** * **Cold Junction Compensation (CJC):** Uses a thermistor to measure the terminal temperature to compensate for the thermocouple's reference junction. * **Burnout Protection:** A circuit that forces the output to a specific level (high or low) if the thermocouple wire breaks. * **A/D Converter:** Converts the low-millivolt thermocouple signal into a digital format for processing. 2. **Isolation Barrier:** * **Opto-couplers / Transformers:** Provides galvanic isolation (typically up to 2000V AC) between the input, outputs, and power supply. This prevents ground loops from damaging sensitive PLC/DCS inputs. 3. **Output Stage:** * **D/A Converter:** Converts the processed signal back to analog. * **Operational Amplifiers:** Scale the signal to the exact 4-20mA or 1-5V ranges. * **Dual Output Drivers:** Independent circuits that allow the signal to be sent to two different devices (e.g., a local display and a remote controller) simultaneously. --- ### 3. Key Features * **High-Density Mounting:** The "W2" prefix often indicates a slim, dual-output design meant to save rail space. * **Linearization:** The internal microprocessor applies mathematical curves to the thermocouple signal to ensure the output is linear relative to the temperature. * **Terminal Design:** Uses M3.5 screw terminals for industrial-grade connectivity. ---