Description

Magnetic Flow Meter

The Magnetic Flow Meter is a high-performance electromagnetic flow measurement instrument designed for accurate, reliable, and continuous measurement of electrically conductive liquids. It operates on the principle of Faraday’s Law of Electromagnetic Induction and provides precise flow measurement without any moving parts inside the measuring tube.

When conductive liquid passes through the magnetic field generated inside the flow tube, a voltage is induced across the electrodes. This voltage is proportional to the velocity of the liquid, allowing the transmitter to calculate and display the volumetric flow rate.

The absence of moving parts results in low maintenance, minimal pressure loss, long service life, and reliable operation. Different liner and electrode materials can be selected according to the characteristics of the process fluid, making the instrument suitable for water, chemicals, wastewater, and many other conductive liquids.

Key Features

• High accuracy and excellent repeatability
• Electromagnetic measuring principle
• No moving parts
• Minimal pressure loss
• Low maintenance requirement
• Continuous and stable flow measurement
• Digital LCD display
• Instantaneous flow and total flow indication
• 4–20 mA output available
• Pulse and digital communication options
• HART communication available on selected models
• Multiple liner and electrode materials
• Wide range of pipe sizes
• Robust industrial construction
• Suitable for demanding process environments

Working Principle

The Magnetic Flow Meter works according to Faraday’s Law of Electromagnetic Induction.

The flow tube generates a controlled magnetic field around the flowing liquid. When an electrically conductive liquid passes through this magnetic field, a small electrical voltage is generated between the measuring electrodes.

The induced voltage is directly proportional to the velocity of the liquid. The transmitter receives this signal, processes it electronically, and calculates the flow rate.

The measured value can then be displayed locally and transmitted to external control systems through standard industrial outputs.

Conductive Liquid → Magnetic Field → Electrode Signal → Signal Processing → Flow Measurement

Technical Specifications

Parameter	Specification
Product Type	Magnetic / Electromagnetic Flow Meter
Measuring Principle	Faraday’s Law of Electromagnetic Induction
Medium	Electrically Conductive Liquids
Nominal Size	Model Dependent
Flow Range	Model Dependent
Accuracy	Model Dependent
Repeatability	Model Dependent
Liner Material	PTFE / Rubber / Other Options
Electrode Material	SS316 / Hastelloy / Other Options
Body Material	Carbon Steel / Stainless Steel / Model Dependent
Process Connection	Flanged / Wafer / Other Options
Display	Digital LCD
Output	4–20 mA / Pulse
Communication	HART / Digital, Model Dependent
Power Supply	Model Dependent
Process Temperature	Model Dependent
Operating Pressure	Model Dependent
Protection Rating	Model Dependent
Installation	Inline Pipeline
Application	Conductive Liquid Flow Measurement

Liner & Electrode Options

Different materials can be selected according to the process fluid and operating conditions.

Liner options:

• PTFE
• Rubber
• Other application-specific materials

Electrode options:

• Stainless Steel
• Hastelloy
• Other corrosion-resistant materials

Proper material selection helps ensure reliable operation when measuring corrosive, abrasive, or chemically aggressive liquids.

Applications

Magnetic Flow Meters are widely used in:

• Water & Wastewater Treatment
• Chemical Processing
• Pharmaceutical Industries
• Food & Beverage Industries
• Effluent Treatment Plants
• Power Generation
• Mining & Mineral Processing
• Pulp & Paper Industries
• Irrigation & Water Distribution
• Industrial Process Control
• Cooling Water Systems
• Slurry and Process Liquid Measurement

Advantages

The Magnetic Flow Meter provides accurate measurement without introducing moving mechanical components into the flow path. This significantly reduces mechanical wear and maintenance requirements.

Because the measuring tube has no obstruction from mechanical measuring elements, the meter produces very low pressure loss. This makes it suitable for continuous process applications where energy efficiency and reliable flow measurement are important.

The availability of different liner and electrode materials also allows the meter to be configured for different liquid characteristics and process conditions.

Installation & Operation

The Magnetic Flow Meter should be installed according to the manufacturer’s recommended piping arrangement and flow direction. Proper grounding is important for stable and accurate measurement.

The meter should be selected according to the pipe size, liquid conductivity, flow range, pressure, temperature, chemical compatibility, liner, and electrode material.

For optimum performance, the measuring tube should remain completely filled with liquid during normal operation, and the installation should minimize conditions that can introduce excessive turbulence or air into the measurement area.

Industries Served

Water Treatment | Wastewater | Chemical | Pharmaceutical | Food & Beverage | Power | Mining | Pulp & Paper | Manufacturing | Process Automation

Product Note

Exact specifications such as nominal size, flow range, accuracy, liner material, electrode material, pressure rating, temperature range, output, power supply, and communication protocol vary according to the selected Magnetic Flow Meter model. Refer to the relevant product datasheet for final technical specifications.