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Flowmeters

Electromagnetic Flowmeter

For conductive liquids in water, wastewater and chemical applications.

Electromagnetic flowmeters are used for conductive liquid measurement where moving parts are not required. Selection depends on conductivity, lining material, electrode material, pipe size, flow velocity and chemical compatibility.

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Velomac flanged electromagnetic flowmeter on clean background

Water process line for electromagnetic flowmeter application context

Where It Is Used

Application Context

Where is an Electromagnetic Flowmeter typically used?

Used for conductive liquid, water and chemical service where lining, electrode material and grounding need to be checked.

Typical media: Conductive liquid, Water, Wastewater, Chemical liquid
Selection basis: Minimum, normal and maximum flow, pressure, temperature, pipe size and installation conditions.

Water treatment

Wastewater flow measurement

Chemical dosing and transfer

Conductive slurry-compatible service

Large-diameter water pipelines

Selection Notes

Conditions to Confirm

What should be checked before selecting an Electromagnetic Flowmeter?

A useful quotation starts with the real operating condition, not only the model name.

Conductivity

Confirm that the liquid is conductive and describe its composition.

Flow range

Share minimum, normal and maximum flow before sizing.

Full pipe

Review whether the selected location can remain completely filled.

Materials

Check liner and electrode compatibility with the process liquid.

Installation

Confirm grounding, pipe arrangement and nearby disturbances.

Signal / display

Confirm local indication and control-system output requirements.

Typical Applications

Related Site Conditions

Compare the product with nearby application scenarios before sending site details.

Conductive Liquid Measurement Chemical Process Lines Energy Loss Visibility

Available configurations

Standard Flanged Electromagnetic FlowmeterWafer-Style Ceramic-Lined Electromagnetic FlowmeterFull Stainless Steel Electromagnetic FlowmeterTri-Clamp Sanitary Electromagnetic FlowmeterInsertion Electromagnetic FlowmeterFlanged Ceramic-Lined Electromagnetic FlowmeterWireless Integrated Electromagnetic FlowmeterRemote Mount Electromagnetic FlowmeterLarge-Diameter Rubber-Lined Electromagnetic FlowmeterPTFE-Lined Electromagnetic Flowmeter

Conductive liquid measurement

Used for conductive liquids where fluid compatibility and grounding conditions can be confirmed during selection.

Lining and electrode options

Neoprene, polyurethane, PTFE, FEP and ceramic lining options are available, along with multiple electrode materials.

Integrated or remote mounting

Integrated and remote mount configurations support different installation spaces and operating environments.

Related engineering and calibration

Master-Meter Liquid Calibration Gravimetric Liquid Calibration Electromagnetic Certification Evidence

Technical Data

Data for Configuration Review

Electromagnetic Flowmeter Technical Data

Parameter	Specification
Line Size (DN)	4-2400
Measuring Media	Conductive liquids
Liner Material	Neoprene, polyurethane (PU), PTFE, FEP, ceramic
Flow Velocity	<= 15 m/s
Excitation Method	Square wave excitation
Electrode Material	Stainless steel 316L, Hastelloy C, Hastelloy B, titanium, tantalum, platinum-iridium, ceramic
Pressure Rating (PN)	0.6 MPa, 1.0 MPa, 1.6 MPa, 4.0 MPa
Lining Temperature Range	Neoprene: -10 deg C to 60 deg C; PU: -10 deg C to 80 deg C; PTFE: -10 deg C to 120 deg C; FEP: -10 deg C to 150 deg C; ceramic: -40 deg C to 180 deg C
Minimum Conductivity	>= 5 uS/cm
Accuracy	+/-1.0%, +/-0.5%, +/-0.2% of reading
Output Signal	Analog 4-20mA, pulse/frequency, high/low limit alarm
Digital Communication	RS485/RS232, HART, wireless transmission optional
Enclosure Rating	IP65, IP68
Hazardous Area Approvals	Flameproof: Ex d IIC T3-T6
Power Supply	85-250V AC, 20-36V DC, 3.6V lithium battery

Selection note: Confirm final configuration against media, flow range, pressure, temperature and site details.

Selected Electromagnetic Flow Range

Line Size (DN)	0.3-0.5 m/s range (m3/h)	0.5-10 m/s range (m3/h)
4	-	0.02-0.2
10	0.08-0.14	0.14-2.8
25	0.53-0.88	0.88-17.7
50	2.13-3.53	3.53-71.0
100	8.49-14.0	14.0-283
300	76.2-127	127-2540
800	543-905	905-18100
2400	4480-8143	8143-162800

Selected flow ranges are shown for orientation. Final sizing depends on media, flow range, pressure, temperature and site details.

Electromagnetic application check

Before Blaming the Meter, Check the Application

Unstable readings often start with the application conditions. Check these five points before changing the meter or configuration.

01

Full Pipe

Is the measuring tube completely filled during operation?

Electromagnetic flow measurement requires a full pipe. Partial filling, air pockets or unsuitable high-point installation can cause unstable or misleading readings.

02

Conductivity

Is the liquid conductive enough for electromagnetic measurement?

Conductivity can differ across wastewater, reclaimed water, RO feed, treated water and highly purified water. Confirm the actual value at the measurement point.

03

Grounding

Is the meter correctly grounded for the actual piping system?

Check the grounding arrangement, especially with non-metallic piping, lined pipes or electrically noisy installations.

04

Air / Solids

Could air, bubbles, suspended solids or deposits be affecting the signal?

Wastewater, slurry, chemical dosing, pump conditions and process transitions can introduce air or changing solids content. Review these together with velocity and installation position.

05

Electrode & Liner

Do the wetted materials match the actual medium?

Review chemical composition, concentration, temperature, abrasion, coating tendency and cleaning conditions before confirming electrode and liner materials.

Not sure which condition is affecting the measurement?

Send us the medium, pipe size, minimum / normal / maximum flow, pressure, temperature and installation conditions.

Review Your Application

Related Resources

Selection Notes to Review

Process AutomationFlowmeter Data Quality Starts at the Measurement PointRead Process Automation >Application NotesSemiconductor Water Flow Measurement Starts with Clear Source-to-Fab BoundariesRead Application Notes >Mining & Mineral ProcessingHow Concentrator Expansion Changes Slurry Flow Measurement DownstreamRead Mining & Mineral Processing >Flowmeter SelectionReclaimed Water Flowmeter Selection: Recheck Conductivity as Water Gets CleanerRead Flowmeter Selection >Application NotesRO Train Flow Measurement: Why Plant Capacity Does Not Show Each Train’s LoadRead Application Notes >

Selection support

Send site details for a better recommendation.

Share the fluid, pipe size, flow range, pressure, temperature, quantity, installation details and signal output needs.

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Water process line for electromagnetic flowmeter application context