The **LCS-7B-R/E2** is a specific model of an **Electromagnetic Flowmeter Converter** (often associated with brands like Fuji Electric or similar industrial instrumentation manufacturers). This device is designed to process signals from a flow sensor and convert them into readable data for industrial control systems. Below is a breakdown of its electronic components and technical specifications. --- ### 1. Core Electronic Components & Architecture | Component Group | Function | Description | |:---|:---|:---| | **Signal Processor** | Core Logic | Utilizes a high-speed microprocessor to perform noise filtering and flow rate calculations. | | **A/D Converter** | Signal Conversion | A high-resolution Analog-to-Digital converter that transforms the low-voltage millivolt signals from the sensor into digital data. | | **Excitation Circuit** | Sensor Driving | Supplies the constant current/frequency needed to create the magnetic field in the flow sensor. | | **LCD Display Unit** | Interface | A backlit liquid crystal display for local monitoring of flow rate, totalized flow, and error codes. | | **I/O Modules** | Connectivity | Includes terminals for 4-20mA current loops, pulse outputs, and digital communication (often RS-485 or HART). | --- ### 2. Technical Specifications | Feature | Specification Details | |:---|:---| | **Power Supply** | Typically 100–240V AC (50/60Hz) or 24V DC depending on the sub-variant. | | **Output Signals** | 4 to 20mA DC (Analog) and Scaled Pulse (Digital). | | **Accuracy** | Generally ±0.5% of the flow rate. | | **Enclosure Rating** | Often IP67 or NEMA 4X (Waterproof and Dustproof). | | **Communication** | Optional Modbus RTU or HART protocol support. | --- ### 3. Electronic Features & Functionality * **Noise Suppression:** The "E2" designation often refers to enhanced electronics designed to filter out electrochemical noise and slurry noise common in industrial fluids. * **Empty Pipe Detection:** Electronic circuitry monitors the electrode impedance to detect if the pipe is not full, preventing false flow readings. * **Low Flow Cutoff:** A programmable threshold where the electronics will force the output to zero to avoid "creep" caused by vibration or minor fluid movement. * **Bi-directional Measurement:** The internal logic can distinguish between forward and reverse flow based on the phase of the induced voltage. --- ### 4. Wiring and Terminals The electronic housing features internal terminal blocks usually categorized as: 1. **L/N/G:** Power supply input. 2. **SIG1/SIG2/COM:** Signal inputs from the flow tube electrodes. 3. **EX1/EX2:** Excitation current outputs to the flow tube coils. 4. **OUT+/OUT-:** The 4-20mA current loop output. ---