Enviro Testers – Electromagnetic Flow Meter

Overview

Enviro Testers’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)