The **M2VT-151-R** is a specific model within the **M2VT series** of signal conditioners/transmitters manufactured by **M-System**. It is a high-performance, plug-in type signal converter primarily used in industrial automation to interface between field sensors and control systems (PLCs/DCS). --- ### 1. Technical Specifications Breakdown The alphanumeric code "151-R" defines the specific configuration of the electronic components and power requirements: | Component Feature | Specification | Description | |:---|:---|:---| | **Model Series** | M2VT | Universal Input Visi-Transmitter (Mini-M Series) | | **Input Signal (1)** | 4 – 20 mA DC | Standard current loop input | | **Output Signal (5)** | 4 – 20 mA DC | Standard current loop output | | **Power Input (1)** | 100 – 240V AC | Wide-range AC power supply | | **Option (R)** | Standard Type | Standard response time and configuration | --- ### 2. Core Electronic Functions The M2VT-151-R performs several critical electronic operations within a control loop: * **Signal Isolation:** It provides 3-way isolation (Input to Output to Power). This protects sensitive control equipment from high-voltage surges or ground loops often found in industrial environments. * **Signal Conversion:** It takes an incoming analog signal and reproduces it at the output with high precision, ensuring that impedance mismatches do not degrade the signal. * **Linearization:** The internal circuitry ensures that the relationship between the input current and output current remains strictly linear. * **Filtering:** Built-in noise filters eliminate high-frequency electromagnetic interference (EMI) that can distort sensor readings. --- ### 3. Hardware Layout & Connection The device is designed for a **11-pin circular socket** mounting. Below is the typical pin-out logic for this electronic part: | Pin Number | Function | Description | |:---:|:---|:---| | **1 & 11** | Power Supply | 100 – 240V AC Input | | **5 (+), 6 (-)** | Input | From the sensor/field device (4-20mA) | | **9 (+), 10 (-)** | Output | To the PLC/Controller (4-20mA) | | **8** | Ground | Earth connection for shielding | --- ### 4. Key Electronic Parameters * **Accuracy:** ±0.1% of span. * **Response Time:** Approximately 0.5 seconds (0 to 90%). * **Isolation Resistance:** 100 MΩ minimum at 500V DC. * **Dielectric Strength:** 2000V AC @ 1 minute (Input to Output to Power to Ground). * **Temperature Coefficient:** ±0.015% per degree Celsius. ---