The **M2UDS2-B2-R2/N** is a specific model within the **M2UDS series** of electronic universal digital sensors/transmitters, typically manufactured by companies like **Azbil (formerly Yamatake)**. These devices are used in industrial automation to convert physical signals into standardized electrical outputs. --- ### 1. Technical Specifications Overview Below are the primary electronic characteristics of this specific model: | Component/Feature | Specification | | :--- | :--- | | **Input Type** | Universal (DC Voltage/Current, Thermocouple, RTD) | | **Output 1** | DC Current (usually 4–20mA) | | **Output 2** | DC Current (isolated from Output 1) | | **Power Supply** | 100–240V AC (Standard Mains) | | **Mounting** | DIN Rail or Surface Mount | | **Accuracy** | ±0.1% of span (typical for this series) | --- ### 2. Breakdown of Part Number Suffixes The alphanumeric string following the base model provides specific electronic configurations: * **M2UDS2**: Base series indicating a Dual Output Universal Digital Signal Conditioner. * **B2**: Represents the Power Supply voltage (typically **100 to 240V AC**). * **R2**: Indicates the specific Output 2 configuration (often a **4–20mA DC** retransmission signal). * **N**: Usually denotes the "No Option" or standard terminal cover configuration. --- ### 3. Key Electronic Components & Internal Design The internal circuitry of the M2UDS2-B2-R2/N consists of several critical stages: #### A. Input Signal Conditioner This stage uses a high-impedance Analog-to-Digital Converter (ADC). Because it is "Universal," it contains a programmable gain amplifier that allows it to sense millivolts (from thermocouples), ohms (from RTDs), or standard 1-5V/4-20mA signals. #### B. Galvanic Isolation One of the most important electronic features of this part is **Three-Way Isolation**: 1. **Input to Output:** Protects the controller from field surges. 2. **Output to Output:** Ensures Output 1 and Output 2 do not experience ground loops. 3. **Power to I/O:** Protects the internal logic from power line noise. #### C. Microprocessor Core The "Digital" aspect of the part number refers to the internal CPU that handles: * **Linearization:** Correcting non-linear signals from temperature sensors. * **Digital Filtering:** Removing 50/60Hz electronic noise from the signal. * **Configuration:** Storing user-defined ranges in non-volatile memory. --- ### 4. Wiring Diagram (Simplified) ```text [ Power L ] ---- (1) (7) ---- [ Output 1 + ] [ Power N ] ---- (2) (8) ---- [ Output 1 - ] [ Ground ] ---- (3) (9) ---- [ Output 2 + ] (10)---- [ Output 2 - ] [ Input + ] ---- (4) [ Input - ] ---- (5) ```