The **M2UDS-2A-R/N** is a specific model of an **Ultra-Compact Digital Panel Meter** (specifically a Digital Bargraph Meter) manufactured by **M-System**. It is designed for process monitoring where space is limited but high visibility is required. --- ## 1. Core Technical Specifications The part number breaks down into specific electronic characteristics: | Feature | Specification | Description | |:---|:---|:---| | **Model** | M2UDS | Ultra-slim Digital Bargraph Meter | | **Configuration (2A)** | 2 Inputs / Alarm | Dual-channel bargraph with alarm outputs | | **Power Input (R)** | 24V DC | Standard industrial control voltage | | **Safety/Standard (N)** | No CE marking | Standard version for specific regional markets | --- ## 2. Key Electronic Components & Features ### A. Display System * **Bargraph:** 101-segment LED (usually red or green) providing a 1% resolution visual representation of the process variable. * **Digital Readout:** 4-digit LED display for precise numerical monitoring. * **Programmable Scales:** The electronics allow for scaling (e.g., a 4-20mA signal can be displayed as 0.0 to 100.0%). ### B. Input/Output Circuitry * **Input Signals:** Typically accepts DC voltage (e.g., 0-10V) or DC current (e.g., 4-20mA). * **Alarm Outputs:** Features Open Collector or Relay contact outputs (depending on sub-configuration) for High/Low limit switching. * **Isolation:** The unit features high galvanic isolation between the input, power, and output stages to prevent ground loops and noise interference. ### C. Physical Construction * **Slim Design:** Only 18mm wide, allowing for high-density mounting on DIN rails or control panels. * **Terminal Block:** Removable tension-clamp or screw terminals for easy wiring. --- ## 3. Applications These electronic modules are primarily used in: 1. **Water Treatment:** Monitoring flow rates or tank levels. 2. **Power Plants:** Visualizing voltage or current fluctuations. 3. **Manufacturing:** Tracking pressure or temperature in real-time on a compact console. --- ## 4. Wiring Diagram Overview (Simplified) Below is a generic representation of the connection points for the M2UDS series: ```text Terminal | Function ---------|-------------------------- 1 - 2 | Power Supply (24V DC) 3 - 4 | Input 1 (e.g., 4-20mA) 5 - 6 | Input 2 (if dual channel) 7 - 8 | Alarm Output 1 (L/H) 9 - 10 | Alarm Output 2 (L/H) ```