Electromagnetic Flow Meter Supplier in Bangladesh
Digital electromagnetic (magmeter) flow meters from Smart Measurement and TECHANGE for water, wastewater, ETP, WTP and STP lines, supplied with installation support by Techno Bangla Creation.
What Is an Electromagnetic Flow Meter?
An electromagnetic flow meter, or magmeter, measures the flow of electrically conductive liquids using Faraday's law of induction. Coils create a magnetic field across the pipe, and electrodes pick up a voltage that rises with liquid velocity. It has no moving parts, so it suits water, wastewater and sludge lines.
A magmeter is not a vortex or turbine meter. It reads liquid velocity from the induced voltage, so the liquid must conduct electricity and the pipe must run full. For steam, gas and air, see our vortex flow meter. For diesel and oil, see the oval gear flow meter.
- Measures conductive liquids such as water, effluent and chemicals
- No moving parts and no obstruction in the pipe
- Digital display with remote monitor and 10 m cable as listed
- Rubber or PTFE lining options
Electromagnetic Flow Meter Specifications
- Type
- Electromagnetic (magmeter) digital water flow meter
- Display
- Digital display with remote monitor
- Size
- 25 ~ 600 mm (about 1 ~ 24 inch)
- Lining Material
- Rubber or PTFE
- Temperature
- 60 ~ 100 °C as listed. The limit depends on the liner, so confirm it for your model.
- Cable
- 10 m cable included
- Brand
- Smart Measurement Co, Ltd, TECHANGE
- Origin
- USA, China
Electrode material, accuracy, outputs and pressure rating depend on the model. Send us your pipe size and liquid and our engineers will confirm them on the datasheet.
Electromagnetic vs Ultrasonic vs Vortex vs Turbine Flow Meters
All four measure flow. They suit different liquids, pipes and budgets.
| Feature | Electromagnetic | Ultrasonic | Vortex | Turbine |
|---|---|---|---|---|
| Best for | Conductive liquids, slurries, sludge | Clean liquids and large pipes | Steam, gas and air, also clean liquids | Clean, low-viscosity liquids |
| Moving parts | None | None | None | Rotor, subject to wear |
| Pressure loss | Practically none | None | Small | Yes |
| Typical accuracy | About ±0.2 to 0.5% of reading | About ±1 to 2% of rate (transit-time) | Good on clean flow | Excellent on clean liquids |
| Dirty or aerated liquid | Handles solids and fibres | Bubbles and particles can scatter the signal | Needs enough flow to shed vortices | Not suited |
| Straight pipe needed | Short, often about 5D up and 3D down | Often about 10D up and 5D down | Needs a straight run | Needs a straight run |
| Main limit | Liquid must conduct, pipe must be full | Sensitive to liquid condition | Sensitive to pipe vibration | Wear and clogging |
Values are typical figures reported by instrument makers and engineering articles. Always confirm against the datasheet of the exact model.
How Does an Electromagnetic Flow Meter Work?
- Coils Create a FieldCoils around the flow tube produce a magnetic field across the pipe.
- Liquid Cuts the FieldConductive liquid flows through the field at right angles.
- Voltage Is InducedMoving liquid generates a small voltage. Higher velocity gives higher voltage.
- Electrodes Pick It UpTwo electrodes touch the liquid through an insulating liner and sense the voltage.
- Transmitter Shows FlowThe converter turns velocity into flow rate and total on the digital display.
Key Benefits of Electromagnetic Flow Meters
Accurate flow data helps you control chemical dosing, water use and discharge records.
- No moving parts, so wear and routine maintenance stay low
- Full-bore tube blocks nothing and adds almost no pressure loss
- Reading is largely unaffected by density, temperature, pressure and viscosity
- Typical accuracy of about ±0.2 to 0.5% of reading, as reported by makers
- Copes with slurries, sludge and dirty effluent when the liner is chosen well
- Local engineering and after-sales support from Techno Bangla
When Should You Choose a Magmeter?
Choose an Electromagnetic Meter When
- The liquid is water, effluent, sludge or a conductive chemical
- The pipe runs full and flow is steady or varies widely
- You need low pressure loss and no moving parts
- Solids, fibres or dirt make other meters unreliable
- You need readings for dosing control or discharge records
Choose Another Meter When
- The medium is steam, gas or air. Use a vortex or thermal gas meter.
- The liquid is diesel or oil. Use an oval gear meter.
- Flow runs in an open drain or channel. Use an open channel flow meter.
- The liquid is demineralised or very pure water with almost no conductivity
- The pipe is often only partly full
Where Are Electromagnetic Flow Meters Used?
Any full pipe carrying a conductive liquid.
- ETP Inlet and Outlet
- WTP Raw and Treated Water
- STP
- Textile and Dyeing
- Pharmaceutical
- Food and Beverage
- Chemical Dosing Lines
- Sludge Lines
- Cooling Water
- Irrigation
How to Choose the Right Electromagnetic Flow Meter
Share these details with our engineers and we will recommend a suitable model and size.
- Liquid conductivity. Makers quote a minimum of about 5 µS/cm, and about 20 µS/cm for demineralised water. Treated and raw water usually pass. Pure RO or DI water does not.
- Liner and electrodes. Rubber suits water and abrasive solids. PTFE suits chemicals and higher temperatures. Check the chemistry, oils and grease before you pick.
- Pipe size and velocity. Many makers advise about 1 to 5 m/s, and under 2 m/s for slurries. Size the meter to the flow, not always to the pipe.
- Installation. Keep the tube full, ground the liquid, and follow the straight-run advice on the datasheet. In flood-prone pits, ask for an IP68 sensor.
- Outputs and display. Ask for 4-20 mA, pulse or Modbus if you use a PLC or SCADA, and a stable power supply in areas with voltage swings.
Why Flow Data Matters in ETP and WTP
Flow is the base number of a treatment plant. Chemical dosing, retention time and discharge records all depend on it. A reliable meter lets you dose in proportion to flow, audit water use and spot leaks early.
Pair the meter with a chemical dosing pump or an online analyzer for tighter control.
Installation and After-Sales Support
Techno Bangla Creation supplies treatment plant equipment together with installation, commissioning and after-sales support for factories, businesses and organizations across Bangladesh.
Our team is based in Mohakhali, Dhaka. See our ETP plant and water treatment plant pages for complete solutions.
Frequently Asked Questions
What is an electromagnetic flow meter?
An electromagnetic flow meter measures the flow of conductive liquids using Faraday's law. A magnetic field crosses the pipe, the moving liquid induces a voltage, and electrodes read it. The voltage rises with velocity, so the meter converts it into flow rate. It has no moving parts.
What liquids can it measure?
It measures any liquid that conducts electricity, such as water, effluent, sludge, acids and alkalis. Makers usually quote a minimum of about 5 µS/cm. It cannot measure oil, diesel, gas or very pure demineralised water, because these carry too little conductivity.
Electromagnetic vs ultrasonic vs vortex flow meter: which is better?
None is better in every case. Electromagnetic meters suit conductive liquids, including dirty effluent. Ultrasonic meters suit clean liquids and large pipes. Vortex meters suit steam, gas and air. Pick by the liquid, pipe condition and accuracy you need, and confirm values on the datasheet.
What pipe sizes do you supply?
Our digital electromagnetic flow meters cover pipe sizes from 25 mm to 600 mm, which is about 1 to 24 inch. They come with rubber or PTFE lining and a remote digital display. Exact limits depend on the model, so we confirm the right size from your flow range.
Should I choose a rubber or PTFE liner?
Rubber liners usually suit water and wastewater with abrasive solids. PTFE resists chemicals and tolerates higher temperatures. The right choice depends on the liquid, its temperature and any acids, oils or grease. Share your process details and our engineers will confirm the liner on the datasheet.
What does installation need?
The pipe must stay full, the liquid must be grounded, and the sensor needs some straight pipe before and after it. Makers often advise about 5D upstream and 3D downstream, but follow the datasheet. Avoid placing it right after valves, bends or pumps.
Is it suitable for ETP and textile wastewater in Bangladesh?
Yes, when the liner and electrodes match the effluent. Textile and dyeing wastewater is conductive, but it may carry chemicals, heat or solids. Tell us the process and temperature, and we will recommend a suitable liner, sensor protection rating and installation point.
How much does an electromagnetic flow meter cost in Bangladesh?
Price depends on pipe size, liner, electrode material, protection rating, outputs and brand. Larger sizes and PTFE lining usually cost more. Send your pipe size, liquid and required outputs by phone or email, and our engineers will reply with a free quotation.
