What are the matters needing attention before purchasing a split-type electromagnetic flowmeter

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.

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

Sewage treatment is one of the crucial links in modern urban life. In the process of sewage treatment, accurately measuring the sewage flow is the foundation for ensuring the efficient operation of the treatment system. Therefore, the measurement of sewage flow has become an indispensable part of the sewage treatment process.

Intelligent electromagnetic flowmeter measurement accuracy is high, stable performance, is a very common product in the flow meter, widely used in petroleum, chemical, food and other industries, especially water resources system, almost everywhere can see the figure of intelligent electromagnetic flowmeter, but the measured medium in these occasions is a single liquid, then with intelligent electromagnetic flowmeter can measure the mixture, Is a lot of owners are very want to know, I hope that today through this article to answer everyone’s doubts.

Reasonable selection and correct installation of the electromagnetic flowmeter is very important to ensure the measurement accuracy and extend the service life of the instrument. The following is a brief introduction to the selection of electromagnetic flowmeter principles, installation conditions and precautions for use.

Electromagnetic flowmeter in the use of precautions and installation requirements

Electromagnetic flowmeter in the industry has achieved good results, then as the core accessories of electromagnetic flowmeter – electrode, electrode is contact with the measured medium more accessories, then the cleaning details of the electrode is a crucial point, of course, also pay attention to a certain method.

Electromagnetic flowmeter is composed of electromagnetic flow sensor and electromagnetic flow converter. The main components are measuring tube, electrode, excitation coil, iron core and yoke, housing. The measuring tube of the sensor is a short non-magnetic alloy tube lined with insulating material.

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:

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.

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

Electromagnetic flowmeter is composed of two parts: sensor and converter. It is based on Faraday’s law of electromagnetic induction work, used to measure the conductivity of more than 20μS/cm conductive liquid volume flow, electromagnetic flowmeter is a measurement of conductive medium volume flow induction instrument.

After being used for a period of time, electromagnetic flowmeters sometimes experience lining deformation, which can lead to inaccurate measurements or sensor damage. Lining deformation mostly occurs in fluoroplastic linings. The common causes are generally two types:

Four physical cleaning methods of electromagnetic flowmeter electrode

The measuring accuracy and stability of the electromagnetic flowmeter is directly related to whether the electromagnetic flowmeter housing is grounded.

Electromagnetic flowmeters find versatile applications across various industries due to their precision and reliability in measuring fluid flow. One primary area of application is in water and wastewater management, where these flowmeters excel in accurately measuring the flow of water and other conductive fluids. Municipalities and water treatment plants utilize electromagnetic flowmeters to monitor water distribution networks, optimize usage, and ensure efficient wastewater processing.

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

Pipe diameter and pipe vibration

The pipe diameter range of some types of flowmeters is not very wide. Therefore, if it is too large or too small, it will limit the selection of flowmeter varieties. To measure low or high flow rates, a flowmeter pipe diameter different from the pipe diameter size can be selected.

Drainage flowmeter, sewage outfall flowmeter installation position

electromagnetic flowmeters are employed in HVAC (heating, ventilation, and air conditioning) systems to measure the flow of water or other fluids used for temperature control. The precision and reliability of these flowmeters ensure optimal performance of HVAC systems, leading to energy savings and improved comfort in various buildings and facilities.

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)

In industry, a flowmeter is a type of flow measurement instrument, and an electromagnetic flowmeter is also a kind of flow instrument. Generally speaking, the types of electromagnetic flowmeters used in different occasions are also different. The classification of electromagnetic flowmeters varies depending on the method. Generally, they are conventionally classified into three types: integrated electromagnetic flowmeters, split electromagnetic flowmeters, insertable electromagnetic flowmeters, and so on. For different occasions, different types of flowmeters are required. The correct selection of electromagnetic flowmeters is a powerful boost in work efficiency.

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:

In industry, electromagnetic flowmeter is a kind of flow meter with a wide range of uses. Electromagnetic flowmeter is divided into: one type, sub-type, insert type. Different occasions need to choose different electromagnetic flowmeters to ensure the measurement results.

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

Usually there is more or less a mixture in the fluid in the measurement of some occasions. In general, in the presence of a small bubbling flow of oil and gas bubbles, it is still able to work normally, but the measurement is a fusion of the volume of oil bubbles, if the proportion of oil and gas rises to have caused a projectile flow, then the electrode may be covered by gas, resulting in the circuit is disconnected, the output shake is more likely to be directly damaged.

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:

Electromagnetic flowmeter mainly has two kinds of pipe segment type and plug-in type, and is divided into two types of body type and sub-body type, of which the plug-in electromagnetic flowmeter is suitable for DN300 or more pipelines.

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

According to different working conditions, split electromagnetic flowmeters can be divided into the following types:

The main sources of faults in electromagnetic flowmeters caused by pipeline systems and related equipment are:

Electromagnetic water meters offer several advantages in water measurement applications, particularly in industrial and municipal settings. Here are some key advantages of electromagnetic water meters:

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.