Chongqing Chuanyi MFL Two-Wire Electromagnetic Flowmeter

Reliable Conductive Liquid Measurement with Two-Wire Technology

The Chongqing Chuanyi MFL Two-Wire Electromagnetic Flowmeter provides high-accuracy inline volume flow measurement for conductive liquids and viscous fluids across diverse industrial sectors. Built with advanced electromagnetic induction principles, the MFL series delivers dependable flow rate tracking unaffected by fluid temperature, pressure, viscosity, or density variations.

By utilizing innovative low-power signal processing technology, the MFL electromagnetic flowmeter operates via a standard 2-wire loop-powered configuration (4-20mA with HART protocol). This architecture allows signal transmission and instrument power supply over a single twisted pair cable, dramatically reducing field wiring costs, simplifying commissioning, and minimizing electrical infrastructure complexity in remote or dense industrial setups.

Durable Construction & Advanced Sensor Design

Engineered to handle abrasive media, corrosive chemicals, and challenging process conditions, the MFL flow sensor is available with a variety of protective lining materials and corrosion-resistant electrodes:

• Liner Options: Neoprene, PTFE, PFA, or Polyurethane to withstand diverse chemical compatibility requirements, thermal stress, and particulate abrasion.

• Electrode Options: Stainless Steel 316L, Hastelloy C, Titanium, Tantalum, or Platinum-Iridium to ensure long-term stability in aggressive acid, alkali, or saline environments.

With no moving parts inside the measuring tube, the MFL flowmeter minimizes pressure loss and prevents clogging, guaranteeing virtually maintenance-free operation over extended lifespans.

Flexible Architecture & User-Friendly Interface

The MFL series comes in both compact (integrated) and remote mounting designs to adapt to various field installation constraints:

• Compact Type: Sensor and converter are combined into a single enclosure for streamlined, space-saving installation.

• Remote Type: Converter is located away from the sensor via signal cables, making it suitable for high-temperature pipelines, underground installations, or high-vibration environments.

The intelligent converter features a backlit LCD digital display displaying instantaneous flow rate, totalized flow, diagnostic status, and alarm signals. With standard HART digital communication, operators can perform remote calibration, parameter configuration, and field diagnostics through handheld communicators or centralized DCS system interfaces.

Applications

• Water & Wastewater Treatment: Potable water distribution, raw water intake, municipal sewage, effluent monitoring, and desalination plants.

• Chemical & Petrochemical: Acid and alkali solution metering, conductive fluid transfer, process chemical batching, and liquid monitoring.

• Metallurgy & Mining: Slurry transport, cooling water circulation, mine dewatering, and mineral processing fluid control.

• Pulp & Paper: Black liquor, paper pulp flow monitoring, and additive dosing.

• HVAC & Utilities: Industrial cooling water, boiler feed monitoring, and utility water metering.

Technical Specifications 

Technical Parameter	Specification / Performance
Measuring Principle	Faraday’s Law of Electromagnetic Induction
Wiring Configuration	2-Wire Loop-Powered (Power & Signal on same line)
Nominal Diameter (DN)	DN15 to DN300 (1/2″ to 12″)
Measurement Accuracy	±0.5% of rate (Standard), ±1.0% of rate
Medium Conductivity	≥ 20 μS/cm (or higher depending on medium)
Measuring Velocity Range	0.3 m/s to 10 m/s
Nominal Pressure	PN10, PN16, PN25, PN40 (ANSI Class 150/300 optional)
Liner Material	Neoprene, PTFE, PFA, Polyurethane
Electrode Material	Stainless Steel 316L, Hastelloy C, Titanium, Tantalum
Power Supply	24 V DC (16V to 36V DC Loop-Powered)
Output Signal	4-20mA DC with HART Communication
Medium Temperature	Compact: -10°C to +80°C; Remote: -20°C to +120°C (depending on liner)
Ambient Temperature	-20°C to +60°C
Ingress Protection	Sensor: IP65 / IP67 (IP68 optional for submersible setup)
Process Connection	Flange Type (GB, ANSI, DIN, JIS standard options)

FAQ 

Q1: What are the main benefits of a 2-wire electromagnetic flowmeter compared to a traditional 4-wire flowmeter? A: A 2-wire electromagnetic flowmeter uses a single pair of wires to supply power and output 4-20mA signals simultaneously. This significantly lowers cable installation costs, reduces power consumption, and simplifies integration into existing loop-powered PLC/DCS architectures.

Q2: Can the Chongqing Chuanyi MFL flowmeter measure pure water or oil? A: No. Electromagnetic flowmeters require a minimum fluid conductivity (typically ≥ 20 μS/cm). Non-conductive fluids such as deionized water, oil, petroleum products, and organic solvents cannot be measured by electromagnetic flowmeters.

Q3: How do I select the proper liner material for my application? A: PTFE and PFA are recommended for high-temperature and highly corrosive chemical applications. Neoprene and Polyurethane offer excellent wear resistance for slurries, wastewater, and fluids containing solid particles.

Q4: Is the MFL flowmeter suitable for buried pipelines or wet environments? A: Yes. For underground or submerged pipelines, the remote sensor option with IP68 protection rating can be specified, allowing the sensor to operate under water while the transmitter is located safely above ground.

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