SUP-FMX240 Compact Electromagnetic Flow Meter—Precision Flow Measurement in a Space-Saving Design

• Introduction

The FMX240 Compact Electromagnetic Flowmeter integrates the transmitter and sensor into a single, space-efficient unit — delivering the full performance of a traditional electromagnetic flowmeter without the footprint. Designed for conductive liquid measurement (≥2 μS/cm), this magmeter employs Faraday’s Law of Electromagnetic Induction to provide highly accurate volumetric flow measurement across a wide dynamic range.

Unlike mechanical flow meters, the FMX240 has no moving parts, no obstructions in the flow path, and negligible pressure drop — making it the ideal choice for applications demanding both precision and low maintenance.

• Specification

• Measuring principle

Mag meter works based on Faraday's law, when the liquid goes through the pipe at the flow rate of v with a diameter D, within which a magnetic flux density of B is created by an exciting coil, the following electromotive E is generated in proportion to flow speed v:

E=K×B×V×D

Where:
E－Induced electromotive force 
K－Meter Tube Constant
B－Magnetic Flux Density
V－Average Flow Velocity
D－Electrode Spacing   

• Features

Superior Fluid Property Immunity

Unlike turbine or Coriolis meters, the FMX240 measurement accuracy remains unaffected by changes in fluid density, viscosity, temperature, pressure, or conductivity — ensuring consistent performance even in variable process conditions.

High-Precision Digital Architecture

Powered by an ARM Cortex-M4 32-bit processor with a 24-bit ADC data acquisition system, the FMX240 employs low-frequency rectangular wave excitation with programmable frequency for exceptional measurement stability. Accuracy: ±0.5% | Repeatability: ≤0.16%.

Single-Mold PEEK Liner — Engineered for Durability

The electrode and PEEK liner are formed in a single molding process, eliminating delamination risks and ensuring exceptional chemical resistance and mechanical integrity. PEEK liner supports negative pressure conditions (-0.1 MPa).

Built-in Temperature Monitoring

Integrated temperature measurement with dedicated (4-20)mA signal output — enables real-time process temperature tracking without additional instrumentation.

Compact, All-Weather Design | IP67 Rated

Sealed to IP67 standards, the FMX240 withstands temporary immersion and harsh outdoor conditions. Compact dimensions (150–200mm face-to-face) enable installation in space-constrained piping systems. Operating ambient: -20°C to 60°C.

Infrared Remote Control & OLED Display

Non-contact infrared remote operation (38 kHz) allows commissioning without opening the enclosure. High-resolution OLED display supports English/Chinese menus — intuitive navigation for field technicians.

Advanced Communication & Diagnostics

RS485 interface with MODBUS-RTU protocol enables seamless integration with PLC, SCADA, and DCS systems. Built-in self-check, self-diagnostic, and empty pipe alarm functions reduce downtime.

Bi-Directional Flow Measurement with Triple Totalizers

Internal counters independently track forward cumulative flow, reverse cumulative flow, and net total — providing comprehensive flow data for billing, batching, and process optimization.

• Why Choose FMX240 Over Conventional Flow Meters?

No Moving Parts = Zero Wear, Minimal Maintenance

Unlike mechanical meters (turbine, positive displacement), the FMX240 has no bearings, rotors, or gears to wear out. Maintenance is virtually eliminated — reducing total cost of ownership by up to 60% over the instrument lifecycle.

PEEK Liner vs. PTFE/ETFE

While PTFE liners are common, PEEK offers superior abrasion resistance, higher temperature tolerance, and excellent chemical compatibility — critical for aggressive chemical dosing, high-purity water, and hygienic applications.

• Applications

Water & Wastewater Treatment — Raw water intake, effluent discharge, sludge transfer, chemical dosing

Chemical Processing — Acid/alkali metering, solvent transfer, additive injection

HVAC & Building Automation — Chilled water, hot water, cooling tower make-up

Food & Beverage — CIP systems, ingredient batching, dairy processing, brewery wort transfer

Pharmaceutical — Purified water (PW), water for injection (WFI), clean-in-place systems

Agriculture & Irrigation — Fertilizer injection, precision irrigation control

Battery & Energy Storage — Electrolyte dosing, cooling water circuits

Slurry Tank Trucks — Mobile flow measurement for concrete admixtures, mining slurries

• FAQ

Q: What is the minimum conductivity required for the FMX240?

A: The FMX240 requires a minimum fluid conductivity of ≥2 μS/cm. Most water-based solutions, acids, bases, and many chemicals easily meet this threshold. For ultra-pure water (<2 μS/cm), please consult our engineering team for alternative solutions.

Q: Can the FMX240 measure in both flow directions?

A: Yes. The FMX240 supports bi-directional flow measurement with independent forward, reverse, and net totalizers. The flow direction can be configured via the infrared remote control or MODBUS-RTU.

Q: What liner material options are available?

A: The FMX240 features a PEEK liner as standard — offering superior chemical resistance, abrasion resistance, and negative pressure tolerance compared to conventional PTFE or ETFE liners.

Q: Is the FMX240 suitable for outdoor installation?

A: Yes. With an IP67-rated enclosure, the FMX240 is protected against dust ingress and temporary water immersion. It operates reliably in ambient temperatures from -20°C to 60°C. For permanent outdoor exposure, we recommend an additional weather protection cover.

Q: What communication protocols does the FMX240 support?

A: The FMX240 supports (4-20)mA analog output for both flow and temperature, plus RS485 with MODBUS-RTU protocol for digital integration with PLC, SCADA, and DCS systems. Baud rates from 1200 to 115200 are configurable.

• Calibration Line