The **MFS-V-AA4-R** is an industrial-grade **Magnetic Flow Sensor** (also known as a Magmeter) manufactured by **Kobold**. This specific part number follows a modular configuration code. Below is a breakdown of the electronic specifications, functional components, and technical data for this model. --- ### 1. Part Number Breakdown To understand the electronic capabilities, we must decode the suffix: | Code Segment | Description | Electronic/Technical Meaning | | :--- | :--- | :--- | | **MFS** | Model Series | Magnetic Inductive Flow Meter | | **-V** | Body Material | Stainless Steel (1.4404 / 316L) | | **-AA** | Connection Size | Typically refers to G 1/2 or NPT thread (size dependent) | | **4** | Output Type | **4-20 mA Analog Output** (Active or Passive depending on wiring) | | **-R** | Orientation/Display | Right-hand display orientation or specific housing variant | --- ### 2. Electronic Components & Working Principle The MFS-V series operates on **Faraday’s Law of Induction**. * **Coil System:** Inside the sensor body, two electromagnetic coils generate a constant magnetic field perpendicular to the flow direction. * **Electrodes:** Two stainless steel electrodes are in contact with the fluid. When a conductive liquid flows through the field, a voltage is induced. * **Signal Converter:** The internal electronics amplify the micro-voltage signal and convert it into a standardized industrial output. --- ### 3. Technical Electronic Specifications | Parameter | Value / Specification | | :--- | :--- | | **Power Supply** | 24 VDC (±10%) | | **Current Consumption** | Max. 100 mA | | **Signal Output** | 4 - 20 mA (Linear to flow rate) | | **Load Resistance** | Max. 500 $\Omega$ | | **Electrical Connection** | M12x1 Plug (5-pin or 4-pin) | | **Accuracy** | ± 2% of full scale | | **Conductivity (Min)** | > 20 µS/cm (Liquid must be conductive) | --- ### 4. Wiring and Pins (Typical M12 Connector) The electronics are usually interfaced via an M12 circular connector. While you should consult the specific manual for your revision, the standard wiring for a "4" (4-20mA) output is: 1. **Pin 1 (Brown):** +24 VDC Power Supply. 2. **Pin 2 (White):** Not used or Configurable. 3. **Pin 3 (Blue):** 0V / GND. 4. **Pin 4 (Black):** 4-20 mA Output Signal. --- ### 5. Key Electronic Features * **No Moving Parts:** Because the sensing is electronic/magnetic, there is no mechanical wear, reducing the risk of electronic failure due to debris. * **Low Pressure Drop:** The internal bore is unobstructed, meaning the sensor does not strain the pump system. * **Pre-Calibrated:** The "AA4" variant comes factory-calibrated for the specified flow range, providing a plug-and-play current loop signal. ---