DN3-3000 Electromagnetic Liquid Flowmeter RS485 4-20mA/Pulse

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:

Precision and flow rate of electromagnetic flow meter

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 correct selection of electromagnetic flowmeter is the prerequisite to ensure the normal use of the instrument. The diameter, flow range, lining material, electrode material and output current of the electromagnetic flowmeter should be determined according to the physical and chemical properties of the measured flow medium, and can adapt to the field environment and meet the technical indicators and performance requirements.

In the field of industrial processes, electromagnetic flowmeters are extensively employed for measuring the flow of liquids such as chemicals, acids, and slurries. Their capability to handle corrosive fluids and resist wear makes them invaluable in industries like chemical manufacturing, pharmaceuticals, and food and beverage production. In these applications, electromagnetic flowmeters contribute to process optimization, ensuring precise control of fluid volumes and enhancing overall operational efficiency.

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

Several electromagnetic flowmeters are used in the gasification unit, and the faults encountered during the test run of the gasification unit are as follows:

Sewage flowmeter can be widely used in municipal water supply, steel, petroleum, chemical, electric power, industry, water conservancy, water resources and other departments of liquid volume flow measurement, especially suitable for channels, small river flow measurement and environmental protection disposal of sewage measurement.

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:

Electromagnetic flowmeter as a commonly used flow measurement instrument, the choice of its material is also an important factor. Because in the electromagnetic flowmeter, the part in contact with the medium is only the electrode and the inside of the measuring tube, it is necessary to select the correct electrode and lining material according to the characteristics of different media.

In the electromagnetic flowmeter installation and debugging stage there will be some failures, below, we will understand the specific causes of the failure at this stage and their elimination methods.

Electromagnetic flowmeters find applications in numerous industries due to their adaptability and precision. They are extensively used in water and wastewater management for monitoring water distribution, sewage treatment, and environmental compliance. In chemical and petrochemical industries, these flowmeters excel in measuring the flow of corrosive and abrasive liquids. The food and beverage sector benefits from their accuracy in ensuring consistent liquid measurements during production processes. In pharmaceutical manufacturing, electromagnetic flowmeters contribute to the precise control of liquid ingredients, while in mining and minerals processing, they help optimize the efficiency of slurry flow.

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)

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.

The working principle of electromagnetic flow meter:

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:

Electromagnetic flowmeter selection is generally more concerned with the measurement medium, temperature, pressure, connection form, protection level and whether explosion-proof.

What are the external interference problems of the electromagnetic flowmeter for domestic wastewater

The requirements of the straight tube section of the electromagnetic flowmeter are very important to ensure the accuracy and stability of the measurement results. The following is a detailed analysis of the requirements of the straight pipe section before and after the electromagnetic flowmeter:

Several factors can contribute to the inaccurate measurement of flow by electromagnetic flowmeters. These factors can vary depending on the specific application, installation conditions, and characteristics of the fluid being measured. Here are some common reasons for inaccurate flow measurement with electromagnetic flowmeters:

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 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 is widely used in the industrial field, in order to make the electromagnetic flowmeter work stable and reliable, accurate measurement, installation needs to be installed in accordance with the correct method.

The electromagnetic flow meter consists of a non-conductive pipe lined with a conductive material, typically made of metal. The meter contains coils or electrodes positioned opposite each other on the pipe’s inner walls. A magnetic field is then generated by passing a current through these coils, creating a measurable voltage across the fluid. The induced voltage, or EMF, is directly proportional to the fluid’s velocity, allowing the flow meter to accurately determine the flow rate. Importantly, this principle remains effective regardless of the fluid’s conductivity, making electromagnetic flow meters suitable for a wide range of applications, including water, wastewater, and various industrial processes.

The selection of circulating water flowmeter is a decision process involving many aspects, which needs to consider the characteristics of circulating water, measurement requirements, environmental conditions, economic costs and the performance characteristics of the flowmeter. Here is a comprehensive analysis and recommendations for the best options:

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:

Electromagnetic flowmeter is a kind of high precision, high reliability and long service life flow surface, which is composed of two parts: the sensor that directly contacts the pipeline medium and the upper end signal converter.

The design of electromagnetic flow meters contributes to their robustness and long-term reliability. With no moving parts in contact with the fluid, they experience less wear and tear, resulting in extended operational life and reduced maintenance requirements. This makes them particularly suitable for applications where low-maintenance and high durability are crucial factors.

One notable advantage of electromagnetic flow meters is their ability to measure bidirectional flow accurately. As the induced voltage is directly proportional to the fluid’s velocity, these meters are highly responsive to changes in flow rates, enabling real-time monitoring and control. Additionally, electromagnetic flow meters are not affected by factors such as temperature, pressure, or viscosity, ensuring consistent and reliable performance across diverse operating conditions. This working principle, coupled with their durability and low maintenance requirements, makes electromagnetic flow meters a preferred choice in industries requiring precise and stable flow measurements.

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.

Electromagnetic flow meters, also known as magmeters, are advanced devices used for measuring the flow rate of conductive fluids such as water and slurries. These meters operate based on the principles of electromagnetic induction. A magnetic field is generated by the meter’s coils, and as the conductive fluid flows through the meter’s pipe, it generates a voltage proportional to the flow rate. The strength of this induced voltage is directly correlated with the speed of the fluid, allowing for accurate and reliable flow measurements.

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.