Measurement advantages of split electromagnetic flow meter

In addition to signal analysis, real-time monitoring is a crucial aspect of fault diagnosis for electromagnetic flow meters. Continuous assessment of key parameters, such as fluid conductivity and temperature, can help detect anomalies that may impact meter accuracy. For instance, sudden changes in conductivity might signal issues like fluid contamination or changes in fluid composition, prompting the need for further investigation.

The electromagnetic flowmeter is constructed in such a way that it mainly consists of a number of key components that work together to measure the flow of a conductive liquid. The following is the main structure of the electromagnetic flowmeter and its functions:

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 flow meter, also known as a magmeter, operates on the principle of electromagnetic induction to measure the flow rate of conductive fluids, such as water or other liquids with a certain level of electrical conductivity. Here’s a basic explanation of the principle behind electromagnetic flow meters:

One of the defining features of electromagnetic flowmeters is their exceptional precision and accuracy in measuring fluid flow rates. The utilization of Faraday’s law of electromagnetic induction ensures that the induced voltage is directly proportional to the flow rate of the conductive liquid passing through the magnetic field. This inherent accuracy makes electromagnetic flowmeters a go-to choice in applications where precise measurements are critical, such as in pharmaceutical manufacturing, chemical processing, and water treatment.

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

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.

As a measuring device with simple structure, sensitive response and not affected by physical properties such as temperature and viscosity of the measured medium, electromagnetic flowmeter has been widely used in the water supply industry, and has obtained good results.

Due to various reasons, some large diameter flowmeters used online can not be tested off-line. It has become an urgent problem to study an online calibration method which is both scientific and effective and ADAPTS to the needs of the field. At present, there are three common methods for online calibration of electromagnetic flowmeters:

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.

Impurities in the medium flowing through electromagnetic flowmeters can have several effects on their performance and accuracy. While electromagnetic flowmeters are known for their versatility and ability to handle a variety of fluids, the presence of certain impurities may impact their operation. Here are some potential effects:

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

Selection of lining materials for electromagnetic flowmeter

The installation distance between an electromagnetic flowmeter and a control valve, especially a rear valve, is a critical factor that can impact the accuracy and reliability of flow measurements. Here are some general guidelines to help determine the appropriate installation distance:

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:

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
Output Signal: 4-20mA/Pulse

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.

Suitability of electromagnetic flowmeters in chlor-alkali measurement chlor-alkali occupation measurement of brine and caustic soda, both of which have the same characteristics:

Electromagnetic flow meters, like any complex instrumentation, require effective fault diagnosis methods to ensure their optimal performance and reliability. One common approach to diagnosing issues with electromagnetic flow meters involves the analysis of the sensor signals. Any deviation from the expected output can be indicative of potential problems within the system. Advanced diagnostic algorithms can be employed to detect abnormalities in the induced voltage or electromagnetic field, allowing for the identification of faults such as sensor drift, signal noise, or electrode fouling.

electromagnetic flowmeters have emerged as indispensable tools for industries that demand accurate and reliable flow measurements. Their advanced technology, coupled with the ability to operate in diverse environments and handle various conductive liquids, positions them as a preferred choice in applications ranging from water management to chemical processing. As technology continues to evolve, electromagnetic flowmeters are likely to witness further advancements, contributing to increased efficiency and precision in liquid flow measurement across different sectors.

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

Four physical cleaning methods of electromagnetic flowmeter electrode

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.

Proper installation of electromagnetic flowmeters is crucial to ensure accurate and reliable measurement of fluid flow in various industrial applications. The first step in the installation process involves selecting an appropriate location for the flowmeter. It is essential to place the flowmeter in a section of the piping system where the flow profile is stable, avoiding areas with turbulence, elbows, or other disturbances that may affect the accuracy of measurements. Additionally, the installation site should provide easy access for maintenance and calibration activities.

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
Output Signal: 4-20mA/Pulse

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

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 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:

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

How to correctly select the installation point of the electromagnetic flowmeter

The converter direction of an electromagnetic flowmeter refers to the orientation or alignment of the flowmeter’s electronic converter unit concerning the flow direction within the pipe. Electromagnetic flowmeters typically have a preferred or specified direction for the converter to achieve optimal performance. The converter contains the electronics and signal processing components essential for accurate flow measurement.

The choice of water flow meter is a comprehensive consideration process, involving many aspects of factors. Here is a guide to tap water flow meter selection to help you choose the most suitable solution:

For the daily inspection of the electromagnetic flow meter, in addition to the inspection of the sensor we talked about last time, it is also necessary to check the sensor of the electromagnetic flow meter, connecting cables, etc., below we will understand how to operate.