electromagnetic flow meter

Electromagnetic Flow Meter Manufacturer in India

Process Control Devices manufactures reliable electromagnetic flow meters for conductive liquids used in water treatment, wastewater, chemical processing, pharmaceuticals, food processing, utilities, and industrial automation.

An electromagnetic flow meter, also known as a magnetic flow meter or mag flow meter, measures the volumetric flow rate of conductive liquids flowing through a closed pipe. Since the meter contains no moving parts or internal flow obstruction, it provides negligible pressure loss, low maintenance, and dependable long-term performance.

The meter is suitable for measuring water, wastewater, acids, chemicals, slurry, sewage, ETP water, process liquids, and other electrically conductive fluids. Its performance is largely unaffected by changes in fluid density, viscosity, pressure, and temperature within the specified operating limits.

Process Control Devices is an established electromagnetic flow meter manufacturer in Mumbai, India, offering integral and remote display models with 4–20 mA output, pulse output, RS485 Modbus communication, alarm relays, and multiple lining and electrode options.

• No moving parts and minimal maintenance
• Negligible pressure drop across the meter
• Suitable for conductive liquids and slurries
• Integral LCD display for flow rate and totalized flow
• Bidirectional flow measurement
• Empty-pipe detection
• Flow-rate and accumulated-total indication
• 4–20 mA analogue output
• Pulse or frequency output
• RS485 Modbus RTU communication
• Optional high- and low-flow alarm relays
• Accuracy options up to ±0.5%
• Fast response to changing flow conditions
• Suitable for laminar, turbulent, and transitional flow
• Available with PTFE, EPDM, and neoprene lining
• Multiple electrode materials for corrosive fluids
• Weatherproof die-cast aluminium enclosure
• Integral and remote transmitter configurations
• Suitable for water, chemicals, wastewater, sewage, and slurry
• Easy installation and commissioning

• Fluid type: Electrically conductive liquids
• Specific gravity: Up to 2.95
• Viscosity: Up to 3,000 cP
• Design pressure: Up to 15 kg/cm²
• Measuring range: 0.1 to 350 m³/hr
• Flow velocity: 0.5 to 10 m/s
• Process temperature: Up to 150°C, subject to lining selection
• Minimum conductivity: To be confirmed according to the selected model and application
• Pipe size: 15 NB to 300 NB
• Flow direction: Unidirectional or bidirectional
• Suitable media: Water, wastewater, chemicals, acids, alkalis, sewage, slurry, ETP water and industrial effluent
• Unsuitable media: Non-conductive liquids, gases, steam, hydrocarbons and oils with insufficient electrical conductivity

An electromagnetic flow meter operates according to Faraday’s Law of Electromagnetic Induction.

When an electrically conductive liquid passes through the magnetic field generated inside the flow tube, a voltage is induced across the liquid. Electrodes mounted on opposite sides of the flow tube detect this voltage.

The induced voltage is directly proportional to the average velocity of the liquid. The electronic transmitter processes the voltage signal and calculates the volumetric flow rate using the known internal diameter of the flow tube.

The calculated flow is displayed as:

• Instantaneous flow rate
• Total accumulated flow
• Forward or reverse flow
• Process alarm status
• Empty-pipe condition

Because the measurement does not depend on moving mechanical components, the electromagnetic flow meter provides low maintenance, minimal pressure loss, and reliable measurement of conductive liquids.

Lining Options

• PTFE lining: Suitable for acids, alkalis, corrosive chemicals, ETP water and many aggressive fluids
• EPDM lining: Suitable for water, wastewater and general-purpose applications
• Neoprene lining: Suitable for water, slurry and moderately abrasive fluids

Electrode Options

• SS316
• Hastelloy C
• Titanium
• Monel
• Other materials based on fluid compatibility

Output and Communication Options

• 4–20 mA analogue output
• Pulse output
• Frequency output
• RS485 Modbus RTU communication
• High-flow alarm relay
• Low-flow alarm relay
• Empty-pipe detection

Power-Supply Options

• 24 VDC isolated
• 110 VAC
• 230 VAC

Installation Options

• Integral-mounted transmitter
• Remote-mounted transmitter
• Outdoor weatherproof enclosure
• Flanged connection
• Custom flange standards
• Bidirectional flow measurement
• Lining protectors for abrasive or corrosive applications

An electromagnetic flow meter is one of the most dependable options for measuring conductive liquids in industrial pipelines.

No Moving Parts

The meter has no turbine, rotor, gear or mechanical component inside the flow path. This reduces wear, breakdowns and regular maintenance requirements.

Negligible Pressure Loss

The flow tube does not create a major obstruction inside the pipeline. Therefore, pressure loss across the electromagnetic flow meter is negligible.

Suitable for Corrosive and Abrasive Liquids

With the correct lining and electrode material, the meter can measure acids, alkalis, chemicals, sewage, slurry and industrial effluents.

Reliable Accuracy

Electromagnetic flow meters can provide accuracy from ±1% to ±0.5%, depending on the selected configuration and application.

Independent of Fluid Properties

Measurement is generally unaffected by changes in fluid density, viscosity, temperature and pressure, provided the fluid remains conductive and the meter operates within its specified limits.

Automation-Friendly Outputs

The meter can be integrated with PLC, SCADA, DCS and BMS systems using 4–20 mA, pulse output or RS485 Modbus communication.

Low Operating Cost

Minimal maintenance, negligible pressure loss and long service life make electromagnetic flow meters a cost-effective solution for industrial flow measurement.