The **W2TS-N1B-R2/N** is a specific model within the **W2TS Series** of digital temperature transmitters manufactured by **M-System** (now part of MG CO., LTD.). These are ultra-slim, signal conditioners designed to convert temperature sensor signals into standard process signals. --- ## 1. Core Specifications The model code breaks down into specific electronic characteristics: | Code Component | Meaning | Description | | :--- | :--- | :--- | | **W2TS** | Series Name | Dual-output Ultra-slim Temperature Transmitter | | **N** | Input Type | **T/C (Thermocouple)** - Field-configurable | | **1** | Output 1 | 4 – 20 mA DC | | **B** | Output 2 | 2 – 10 V DC | | **R2** | Power Input | 24 V DC | | **N** | Standards | None (Standard Non-CE version) | --- ## 2. Key Electronic Components & Functions ### A. Input Stage (Thermocouple Interface) The "N" designation indicates a thermocouple input. The electronic circuit includes: * **Cold Junction Compensation (CJC):** An internal thermistor or sensor that measures the terminal temperature to compensate for the voltage generated at the connection point. * **A/D Converter:** High-resolution analog-to-digital conversion to handle the millivolt (mV) signals typical of thermocouples. * **Burnout Protection:** A circuit that forces the output to a specific level (usually high or low) if the sensor wire breaks. ### B. Dual Output Isolation This model features **Dual Outputs**, meaning it can drive two different instruments (e.g., a PLC and a local display) from one sensor input. * **Isolation:** The input, Output 1, Output 2, and Power are all galvanically isolated from each other (typically up to 2000V AC). This prevents ground loops and protects sensitive downstream electronics. ### C. Power Supply Section * **Rating:** 24V DC (Operating range ±10%). * **Current Consumption:** Low power consumption (typically < 80mA) designed for high-density DIN rail mounting. --- ## 3. Technical Parameters | Feature | Specification | | :--- | :--- | | **Configuration** | PC-programmable via PuTTY or dedicated software | | **Response Time** | $\leq$ 0.5 seconds (0 – 90%) | | **Accuracy** | $\pm$0.1% of span | | **Isolation Resistance** | 100 M$\Omega$ or more with 500V DC | | **Mounting** | DIN Rail (Ultra-slim 12mm width) | --- ## 4. Programming and Wiring To utilize this electronic part, the internal microprocessor must be configured for the specific thermocouple type (K, J, E, T, R, S, B, or N). ```bash # General Wiring Reference Terminal 1-2: Output 1 (4-20mA) Terminal 3-4: Output 2 (2-10V) Terminal 5-6: Power Input (24V DC) Terminal 7-8: Thermocouple Input ``` ---