The **M2VT-154-R/CE** is a high-performance **Signal Conditioner** (specifically a Potentiometer Transmitter) manufactured by **M-System**. It is part of the Mini-M series, designed to convert a potentiometer or slidewire input into a standard DC output signal. --- ### 1. Key Technical Specifications The model code `M2VT-154-R/CE` breaks down into specific electronic parameters: | Component Code | Specification Detail | | :--- | :--- | | **M2VT** | Model series: Potentiometer Transmitter | | **15** | Input Range: 100 $\Omega$ to 10 k$\Omega$ (Total Resistance) | | **4** | Output Type: 0 – 10V DC | | **R** | Power Input: 24V DC | | **CE** | Compliance: CE Marking (European Standards) | --- ### 2. Functional Description This device acts as an interface between a mechanical sensor (like a float-level sensor or valve positioner) and a control system (PLC/DCS). #### A. Input Section * **Three-wire Potentiometer:** It accepts signals from resistors where the wiper position changes. * **Excitation Voltage:** The unit provides a stable reference voltage to the potentiometer to sense the wiper position accurately. #### B. Isolation Technology * **Three-Way Isolation:** The device provides electronic isolation between the **Input**, **Output**, and **Power Supply**. * **Benefit:** This prevents ground loops, reduces electrical noise, and protects sensitive PLC inputs from high-voltage surges on the field side. #### C. Adjustment Capabilities * **Zero/Span Adjustments:** Located on the front panel, these allow for field calibration (adjusting the 0% and 100% points) to compensate for mechanical tolerances in the potentiometer. --- ### 3. Circuit Interface (Wiring Diagram) ```mermaid graph LR A[Potentiometer] -- Input Pins 1, 2, 3 --> B(M2VT-154-R/CE) B -- Output Pins 4, 5 --> C[PLC / Controller] D[24V DC Source] -- Power Pins 7, 8 --> B ``` --- ### 4. Performance Characteristics * **Accuracy:** Typically ±0.1% of span. * **Response Time:** Approximately 0.5 seconds (0 to 90%). * **Mounting:** Standard DIN rail mounting (plug-in base). * **Temperature Coefficient:** ±0.015% per degree Celsius.