Application field of electromagnetic flow meter

The application of flowmeter in food processing is very extensive, mainly reflected in the following aspects:

The use of electromagnetic flowmeters is very wide, and this measuring instrument is used in many industries. Electromagnetic flowmeter is different from the general flowmeter, it follows the principle of electromagnetic induction, can measure the flow of liquid in the pipeline and its velocity.

The transducer in the split electromagnetic flowmeter can form a body or separate type with the sensor, the integrated electromagnetic flowmeter is the integrated electromagnetic flowmeter, the split type becomes the split electromagnetic flowmeter, the flowmeter is a two-way measurement system, and the three integrators are installed: the forward total, the reverse total and the difference total

Intelligent electromagnetic flowmeters are mainly used to measure the volume flow of conductive liquid and slurry in closed pipelines, including acid, alkali, salt and other highly corrosive liquids.

What are the advantages of electromagnetic flowmeter measurement for sewage measurement? The plug-in electromagnetic flowmeter is composed of two parts: flow sensor and transmitter.

The material of construction is also a vital aspect in electromagnetic flowmeter selection. Different applications may require flowmeters made from specific materials to withstand corrosive environments or harsh chemicals. Ensuring that the materials of construction are compatible with the fluid and environmental conditions helps enhance the longevity and reliability of the flowmeter.

Another critical factor to consider is the flow rate range of the application. Electromagnetic flowmeters exhibit excellent accuracy and stability across a broad range of flow rates, making them suitable for both low-flow and high-flow applications. It is essential to match the flowmeter’s specifications, such as its minimum and maximum flow rates, with the expected flow conditions in the system.

Measuring Range： Max 15m/s
Conductivity： >5us/cm
Protection Class： IP65(Standard); IP68(Optional for remote type)
Process Connection： Flange (Standard), Wafer, Thread, Tri-clamp etc (Optional)
Output Signal： 4-20mA/Pulse
Communication： RS485(Standard), HART(Optional),GPRS/GSM (Optional)
Power Supply： AC220V (can be used for AC85-250V)
DC24V (can be used for DC20-36V)
DC12V (optional), Battery Powered 3.6V (optional)
Power Consumption： <20W Alarm： Upper Limit Alarm / Lower Limit Alarm Self-diagnosis： Empty Pipe Alarm, Exciting Alarm Explosion Proof： ATEX

Electromagnetic flowmeter at work requires that the measured medium must be ground potential, generally through the pipeline or flange ground, if the process pipe connected to the sensor relative to the measured medium is insulated (plastic pipe or pipe with an insulating lining), you must choose a grounding ring or sensor with a grounding electrode, so that the measured medium in the ground potential, easy to be ignored in the actual design and installation.

A type electromagnetic flowmeter does not require a separate converter; The separation electromagnetic flowmeter type converter is installed near the sensor or the instrument room, the place to choose is larger, the environmental conditions are better than the sensor, and the protection level is IP65 or IP64 (dust and splash level).

Environmental monitoring is another domain where electromagnetic flowmeters prove valuable. In applications related to ecological studies and environmental research, these flowmeters aid in measuring water flow in rivers, streams, and other natural water bodies. The data obtained contributes to a better understanding of ecosystems, water resource management, and environmental conservation efforts.

Measuring Range： Max 15m/s
Conductivity： >5us/cm
Protection Class： IP65(Standard); IP68(Optional for remote type)
Process Connection： Flange (Standard), Wafer, Thread, Tri-clamp etc (Optional)
Output Signal： 4-20mA/Pulse
Communication： RS485(Standard), HART(Optional),GPRS/GSM (Optional)
Power Supply： AC220V (can be used for AC85-250V)
DC24V (can be used for DC20-36V)
DC12V (optional), Battery Powered 3.6V (optional)
Power Consumption： <20W Alarm： Upper Limit Alarm / Lower Limit Alarm Self-diagnosis： Empty Pipe Alarm, Exciting Alarm Explosion Proof： ATEX

Electromagnetic flowmeter is a speed meter to measure the volume flow of conductive media. While carrying out on-site monitoring and display, it can output standard current signals for recording, adjustment and control, realizing automatic control of detection, and realizing long-distance transmission of signals. It can be widely used in water, chemical, coal, environmental protection, textile, metallurgy, paper and other industries in the flow measurement of conductive liquid. The structure of the instrument has one type and one type.

Performance Technical parameter
Size DN3-DN3000mm
Nominal Pressure 0.6-1.6Mpa(2.5Mpa/4.0Mpa/6.4Mpa…Max 42Mpa)
Accuracy +/-0.5%(Standard)     +/-0.3% or +/-0.2%(Optional)
Liner PTFE, Neoprene, Hard Rubber, EPDM, FEP, Polyurethane, PFA
Electrode SUS316L, Hastelloy B, Hastelloy C       Titanium, Tantalum, Platinium-iridium
Structure Type Integral type, remote type, submersible type, ex-proof type
Medium Temperature -20~+60 degC(Integral type)
Remote type ( Neoprene ,Hard Rubber ,Polyurethane ,EPDM) -10~+80degC
Remote type(PTFE/PFA/FEP) -10~+160degC
Ambient Temperature -20~+60deg C
Ambient Humidity 5-100%RH(relative humidity)
Measuring Range Max 15m/s
Conductivity >5us/cm
Protection Class IP65(Standard); IP68(Optional for remote type)
Process Connection Flange (Standard), Wafer, Thread, Tri-clamp etc (Optional)
Output Signal 4-20mA/Pulse
Communication RS485(Standard), HART(Optional),GPRS/GSM (Optional)
Power Supply AC220V (can be used for AC85-250V)
DC24V (can be used for DC20-36V)
DC12V (optional), Battery Powered 3.6V (optional)
Power Consumption <20W Alarm Upper Limit Alarm / Lower Limit Alarm Self-diagnosis Empty Pipe Alarm, Exciting Alarm Explosion Proof ATEX

The measuring principle of intelligent electromagnetic flowmeter is Faraday’s law of electromagnetic induction, which measures the flow of conductive fluid according to the electromotive force induced by the conductive fluid through the external magnetic field. The main components of the sensor are: measuring tube, electrode, excitation coil, iron core and yoke shell.

Electromagnetic flowmeters, also known as magmeters, are devices that measure the flow of electrically conductive fluids using the principles of electromagnetic induction. There are several types of electromagnetic flowmeters, each with its own characteristics and applications. Here are some common types:

Electromagnetic flow meter is one of the most popular flow meters. Flange type electromagnetic flow meter has been used for more than 50 years worldwide. It is widely used for all conductive liquids in every industry, such as water, acid, alkali, milk, slurry etc.

Four physical cleaning methods of electromagnetic flowmeter electrode

Notes for electromagnetic flowmeter selection:

The scale of the water supply system itself is huge, and the environment in which it is located is complex and changeable, requiring the electromagnetic flowmeter to have strong stability and reliability, so in the actual use process, the matters needing attention should be clear.

The grounding of the electromagnetic flowmeter is equipped with a grounding ring, and then the grounding ring is connected to the pipeline. If it’s lined, you need a third electrode to ground it.

Electromagnetic flowmeters are classified according to the assembly method of converters and sensors, with split type and one type. Split type electromagnetic flowmeter is relative to the integrated, its components are: measuring tube, electrode, excitation coil, iron core and yoke housing. Used to measure the volume flow of conductive liquid and slurry in closed pipes.

Electromagnetic flowmeters, also known as magmeters or magnetic flowmeters, typically generate electrical output signals proportional to the flow rate of a conductive fluid passing through a pipe. The most common output signals from electromagnetic flowmeters include:

One of the significant advantages of electromagnetic flowmeters is their high level of accuracy and reliability. With no moving parts in direct contact with the fluid, these devices experience minimal wear and tear, resulting in low maintenance requirements and increased longevity. Their versatility allows them to handle a broad spectrum of conductive liquids, from water and chemicals to slurries, making them suitable for a wide range of applications. Moreover, electromagnetic flowmeters are insensitive to changes in fluid properties, such as density, viscosity, and temperature, ensuring consistent and precise measurements across varying operating conditions.

Power Supply: AC220V (can be used for AC85-250V)
DC24V (can be used for DC20-36V)
DC12V (optional), Battery Powered 3.6V (optional)
Power Consumption: <20W Alarm: Upper Limit Alarm / Lower Limit Alarm Self-diagnosis: Empty Pipe Alarm, Exciting Alarm Explosion Proof: ATEX

How to correctly select the installation point of the electromagnetic flowmeter

Once the installation location is determined, the next step is preparing the piping system. Ensure that the pipeline is clean and free from debris that could interfere with the operation of the flowmeter. In some cases, straight pipe runs are recommended both upstream and downstream of the flowmeter to allow for proper fluid flow development and stabilization. This helps in achieving optimal measurement accuracy.

The electromagnetic flowmeter should be installed with the flow direction aligned with the arrow on the flowmeter body. Proper orientation ensures that the magnetic field generated by the flowmeter’s coils is perpendicular to the fluid flow, allowing for accurate measurements. Additionally, it is essential to properly ground the flowmeter to minimize electrical noise and interference, ensuring the stability of the measurement signals.

The installation process involves securely mounting the flowmeter on the piping system using appropriate brackets or supports. Care should be taken to align the flowmeter properly and tighten all connections to prevent leaks. Adequate sealing measures must be implemented to prevent ingress of moisture or contaminants into the flowmeter, which could adversely affect its performance.

Measuring medium: Conductive liquid
Diameter range: DN3mm～DN3000mm
Accuracy: ± 0.5% of the indicated value, optional ± 0.3% or ± 0.2%
Measuring range (Flow rate): 0.01m/s～15m/s

In industrial settings, electromagnetic flow meters play a vital role in process control and monitoring. Their ability to provide accurate measurements in challenging conditions, such as high temperatures and abrasive environments, makes them indispensable for industries like water treatment, chemical processing, and wastewater management. The continuous advancements in technology have further enhanced the capabilities of electromagnetic flow meters, making them a trusted and widely adopted solution for precise flow measurement in diverse applications.

Selection of lining materials for electromagnetic flowmeter

Electromagnetic flow meters offer several advantages, making them a popular choice in various industrial applications. Here are some of the key advantages of electromagnetic flow meters:

When measuring waste acid using an electromagnetic flowmeter, it’s crucial to choose electrodes that are suitable for the corrosive nature of the acid and that can withstand the specific conditions of the application. Common electrode materials for electromagnetic flowmeters used in corrosive environments include:

Electromagnetic flowmeters exhibit remarkable performance even in challenging environmental conditions. Their construction materials are often chosen for their corrosion resistance, enabling these devices to withstand harsh chemicals and extreme temperatures. This robustness ensures continuous and reliable operation, making electromagnetic flowmeters suitable for demanding industrial applications where other flow measurement devices might struggle to perform consistently.

Medium Temperature: -20~+60 degC(Integral type)
Remote type ( Neoprene ,Hard Rubber ,Polyurethane ,EPDM) -10~+80degC
Remote type(PTFE/PFA/FEP) -10~+160degC
Ambient Temperature: -20~+60deg C
Ambient Humidity: 5-100%RH(relative humidity)
Measuring Range: Max 15m/s
Conductivity: >5us/cm
Protection Class: IP65(Standard); IP68(Optional for remote type)
Process Connection: Flange (Standard), Wafer, Thread, Tri-clamp etc (Optional)
Output Signal: 4-20mA/Pulse

The grounding ring is a crucial component in the installation of an electromagnetic flowmeter as it helps establish proper grounding and ensures accurate and reliable measurements. Here’s a general guide on how to install an electromagnetic flowmeter grounding ring:

Measuring medium: Conductive liquid
Diameter range: DN3mm～DN3000mm
Accuracy: ± 0.5% of the indicated value, optional ± 0.3% or ± 0.2%
Measuring range (Flow rate): 0.01m/s～15m/s