Description Overview GAOTek’s electromagnetic flow meter is a cutting-edge solution designed to measure the volume flow of conductive fluids in closed pipelines with exceptional accuracy and reliability. This device leverages Faraday’s Law of Electromagnetic Induction to deliver precise measurements unaffected by fluid density, viscosity, temperature, or pressure variations, making it ideal for demanding industrial environments. Features High Accuracy Measurement: Unaffected by variations in flow density, viscosity, temperature, pressure, and conductivity. Linear measurement principle ensures precision. No Obstruction or Pressure Loss: No moving parts in the pipe, eliminating pressure loss. Lower requirement for straight pipeline sections. Wide Pipe Size Range: Supports pipe diameters from DN 6 to DN 2000. Multiple liner and electrode materials for diverse fluid compatibility. Advanced Excitation Technology: Programmable low-frequency square wave excitation for stability and reduced power consumption. 16-bit MCU for high integration and accuracy. Full-digital processing enhances noise resistance and reliability. High-definition LCD with backlight for clear visibility. Multiple digital communication support. Intelligent empty pipe detection. Electrode resistance measurement for contamination diagnosis. Surface mount technology (SMT) for improved reliability. Available in compact and remote-type models. Suitable for conductive fluids in industries like chemical, petroleum, water treatment, agriculture, and more. Multiple Output Options: Current, Frequency, pulse and Alarm outputs Operates in a wide range of ambient temperatures and humidity levels. Technical Specifications Measurement Principle Faraday’s Law of Electromagnetic Induction Accuracy Standard: 0.5% High Accuracy: 0.2% Flow Range Maximum Flow Velocity Up to 49.2 ft/s (15 m/s) Pipe Sizes (Diameters) 0.12 in to 78.7 in (3mm–2000mm) Nominal Pressure 232 psi (1.6 MPa) (DN 6 to DN 300) 145 psi (1.0 MPa) (DN 350 to DN 1000) 87 psi (0.6 MPa) (DN 1200 to DN 2000) Fluid Conductivity (Minimum) ≥10 µS/cm Fluid Temperature (Max. Depends on Liner) 176 °F (80 °C) (Neoprene) 212 °F (100 °C) (PTFE) 302 °F (150 °C) (Silicone) 158 °F (70 °C) (Polyurethane) Operating Temperature (Sensor & Converter) -13 °F to 140 °F (-25 °C to 60 °C) Relative Humidity 5% to 90% Power Supply AC: 85 V to 265 V, 45 Hz to 63 Hz (≤ 20 W) DC: 11 V to 40 V Output Signals Analog Current: 4 mA to 20 mA (0 Ω to 750 Ω load) 0 mA to 10 mA (0 Ω to 1.5 kΩ load) Frequency: 1 Hz to 5000 Hz (bidirectional) Pulse factor: 0.00026 gal/pulse to 264,172 gal/pulse (0.001 m³/p to 1000 m³/p) Alarm Outputs: 2 channels (high/low limit, photo-coupler isolated) Communication Protocols RS485, RS232, MODBUS, REMOTE Enclosure Protection IP65 (standard) IP68 (submersible, excludes flameproof models) Electrode Materials Stainless Steel (Mo), Hastelloy B/C, Titanium, Tantalum, Platinum-Iridium Liner Materials Neoprene, PTFE, Silicone, Polyurethane Damping Time (Adjustable) 0.2 seconds to 100 seconds Excitation Modes Field Types: 3 modes (standard, low-frequency for large pipes)
