The **M2VT-154-R2/Q** is a high-precision, signal conditioning instrument manufactured by **M-System**. This specific model belongs to the M2VT series, which are plug-in type transmitters designed to convert a DC input signal into two isolated DC output signals. --- ### 1. Part Number Breakdown The suffix and prefix characters define the specific electronic characteristics of the unit: | Component | Code | Meaning | | :--- | :--- | :--- | | **Series** | M2VT | Function: Signal Transmitter (Isolator) | | **Input** | 1 | 0 – 10 mV DC | | **Output 1** | 5 | 4 – 20 mA DC | | **Output 2** | 4 | 0 – 10 V DC | | **Power Supply** | R2 | 11–27 V DC | | **Option** | /Q | Custom specified or high-reliability coating | --- ### 2. Key Electronic Features The internal circuitry of the M2VT-154-R2/Q is engineered for industrial environments where signal integrity is critical. * **Dual Isolated Outputs:** It takes a single millivolt input (0-10mV) and provides two independent output signals. This allows one signal to go to a local display and the other to a PLC or DCS without electrical interference between them. * **Three-Way Isolation:** It provides complete galvanic isolation between the **Input**, **Output**, and **Power** terminals. This prevents ground loops and protects sensitive equipment from high-voltage surges. * **Zero and Span Adjustment:** The front panel typically includes multi-turn potentiometers to calibrate the electronic offset (Zero) and the gain (Span). * **Plug-in Construction:** The electronic components are housed in a modular casing that plugs into a base socket (M2-series base), allowing for easy maintenance without disconnecting wires. --- ### 3. Technical Specifications | Parameter | Specification | | :--- | :--- | | **Input Impedance** | ≥ 100 kΩ | | **Load Resistance (Output 1)** | Max 750 Ω | | **Load Resistance (Output 2)** | Min 10 kΩ | | **Accuracy** | ±0.1% of span | | **Response Time** | ≤ 0.5 seconds (0 – 90%) | | **Isolation Resistance** | ≥ 100 MΩ with 500 V DC | | **Dielectric Strength** | 2000 V AC @ 1 minute | --- ### 4. Typical Applications * **Level/Pressure Monitoring:** Converting a low-voltage sensor signal into standard 4-20mA loops for long-distance transmission. * **Signal Splitting:** When one sensor needs to provide data to two different control systems simultaneously. * **Ground Loop Elimination:** Resolving potential differences between field instruments and the control room.