High Accuracy Conductive Liquid Electromagnetic Flowmeter Magnetic Flow Meter

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

The role of electromagnetic flow meter grounding in actual installation. Compared with other flowmeter products, electromagnetic flowmeter has high precision, reliable performance, stable work and excellent anti-interference ability. However, as a precision instrument, in order to meet these high requirements, it is necessary to have strict installation requirements, this article will introduce the electromagnetic flowmeter grounding wire that is often not paid attention to when installing.

Electromagnetic flowmeter in the use process will produce some faults affect the normal work of the instrument, how to find the cause behind the fault is a very important work, we need to identify through a variety of different types of detection methods, in general, we for electromagnetic flowmeter routine testing, usually including electrode contact resistance, electrode polarization voltage, Signal cable interference, the determination of whether there is a grounding potential and the flow of stray current in the pipeline five aspects, these five aspects can be carried out separately, in fact, but also interrelated, any change in the factor may cause other changes, this reminds everyone in the detection of special attention:

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.

What are the problems encountered when electromagnetic flowmeters are used in paper mills

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:

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.

One key advantage of electromagnetic flow meters is their versatility in handling various fluid types and conditions. Since they rely on the conductivity of the fluid rather than its physical properties, these meters are suitable for a wide range of applications, from clean water to corrosive chemicals. Additionally, they exhibit minimal pressure loss, making them an energy-efficient choice for flow measurement systems.

Intelligent electromagnetic flowmeter has a pivotal position in liquid measurement with high measurement accuracy and stable performance. It can be seen everywhere, today we mainly talk about the intelligent electromagnetic flowmeter in daily use, which parts – electrode related maintenance points:

Four physical cleaning methods of electromagnetic flowmeter electrode

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 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 a kind of induction meter to measure the volume flow of conductive medium, which can be used to measure the volume flow of strong corrosive liquid such as strong acid and alkali and uniform liquid-solid two-phase suspended liquid such as mud, pulp, pulp, etc.

Calibration checks are another essential component of fault diagnosis for electromagnetic flow meters. Regular calibration against known standards ensures that the meter’s measurements remain accurate over time. Any deviation from the expected calibration values may indicate sensor degradation, electronic component failure, or other issues that require attention.

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 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

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.

Selecting the right electromagnetic flowmeter involves considering various factors to ensure it meets the specific requirements of your application. Here’s a step-by-step guide to help you choose an electromagnetic flowmeter:

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.

Selecting the appropriate installation point for an electromagnetic flowmeter is crucial for accurate and reliable measurements. Here are some considerations and guidelines to help you choose the right measuring installation point:

Electromagnetic flowmeters, commonly known as magmeters, are a sophisticated and versatile type of flow measurement device widely used in industrial applications. Unlike traditional mechanical flow meters, electromagnetic flowmeters operate on the principle of electromagnetic induction to provide highly accurate and reliable measurements of liquid flow. The technology behind these devices makes them suitable for a diverse range of industries where precise flow measurement is crucial for various processes.

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

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

Installing electromagnetic flowmeters correctly is essential for ensuring accurate and reliable flow measurement. Here are some precautions to consider when installing electromagnetic flowmeters:

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

When using electromagnetic flowmeters in the field, it’s important to perform regular checks and maintenance to ensure accurate and reliable flow measurements. Here are some key parameters to check and consider in the field for electromagnetic flowmeter use:

Non-full tube electromagnetic flowmeter is an advanced flow measuring instrument, especially suitable for measuring the flow of non-full tube or partially filled fluid, such as municipal rainwater, wastewater, sewage and so on. The following is a detailed introduction to the non-full tube electromagnetic flowmeter:

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.

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

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.

Basic fault treatment of intelligent sewage electromagnetic flowmeter:

Fixed the electromagnetic flowmeter for periodic visual inspection, check the environment around the instrument, clean dirt, ensure that no water and other substances, check whether the wiring is good, check whether the electromagnetic flowmeter near the new installation of strong electromagnetic field equipment or a new wire across the instrument.