How should insert type electromagnetic flowmeter be installed?

Selection of lining materials for electromagnetic flowmeter

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 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

According to the composition of the sensor and the converter, the electromagnetic flowmeter can be divided into two types: separation type and one type. The separation type is to set the sensor and the converter independently, and the middle is connected with a cable, so the cable length is limited by the conductivity of the measured current body. One type is the sensor and converter as a whole set, so it is related to the fluid temperature and the ambient temperature, compared with the separation type, the applicable temperature range will be limited.

Electromagnetic flowmeter is based on the principle of electromagnetic induction, through the electromotive force generated by the conductive fluid through the external magnetic field to measure the fluid flow meter. Electromagnetic flowmeter is widely used because of its high precision and good stability, so the choice of integrated or split electromagnetic flowmeter is particularly important.

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

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:

With the continuous acceleration of industrialization, the problem of environmental pollution is becoming more and more serious, and the call of society for sustainable development is getting higher and higher, so the control of pollution is more urgent.

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.

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 installation direction of the electromagnetic flowmeter is not particularly strict requirements, generally horizontal, vertical or inclined can be unlimited. However, it must be reminded that in order to ensure that the pipeline is full of the measured medium, that is, the “full tube” state, it is recommended to install vertically, flow from bottom to bottom, especially for liquid-solid two-phase fluids, it must be installed vertically. If the site only allows horizontal installation, it must be ensured that the two electrodes are in the same horizontal plane, and the axis of the electrode must be approximately horizontal, because the electrode at the bottom is easily covered by sediment, and the top electricity is easily wiped by the occasional bubble in the liquid, covering the electrode surface and making the output signal fluctuate. The following lists the matters that need attention in the installation of electromagnetic flowmeters:

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

Electromagnetic flowmeters generally operate normally for a long time without maintenance after installation, and then require maintenance and daily inspection.

The insert type electromagnetic flowmeter is an instrument used to measure conductive liquids, especially for large diameter pipe measurements.

The structure of an electromagnetic flowmeter mainly consists of multiple key components, which work together to measure the flow of conductive liquids. The following are the main structural components and functions of the electromagnetic flowmeter:

Notes for electromagnetic flowmeter selection:

Electromagnetic flowmeters feature high precision and a long service life, and are widely used in fields and industries such as chemical engineering, environmental protection, and metallurgy. However, during the usage process, due to the influence of various factors, it is very easy for the measurement results of the electromagnetic flowmeter to be inaccurate. So, what are the causes of errors in electromagnetic flowmeters?

The versatility of electromagnetic flowmeters is a testament to their robust performance across a wide range of conductive liquids. Whether dealing with water, acids, bases, or slurries, these flowmeters maintain their accuracy and reliability. This adaptability is particularly valuable in industries with varying fluid compositions, allowing for a single flowmeter type to be employed in diverse applications without sacrificing performance.

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

Now, the input impedance of the electromagnetic flowmeter converter has improved a lot, and the error is basically not caused by changes in the conductivity of the medium when the conductive liquid is conductive, but for a certain converter input impedance, the conductivity of the measured medium has a lower limit min, which cannot be lower than this lower limit.

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:

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:

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.

The plug-in electromagnetic flowmeter has a wide range of applications, and can be used to measure the volume flow of conductive liquid and slurry in closed pipelines in many fields such as petroleum, chemical industry, metallurgy, paper making, environmental protection, municipal management, water conservancy construction and so on.

After the initial debugging and normal operation for a period of time, the split electromagnetic flowmeter fails in the operation process, the common causes of failure are: the internal flow sensor connection layer, lightning strikes, environmental changes. Below, the staff of the flowmeter manufacturer will lead you to understand some common faults of the split electromagnetic flowmeter.

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.

Electromagnetic flowmeter is designed for the measurement of conductive liquid instrument, its high accuracy, wide range ratio, internal no moving parts, open flow parts, no pressure loss. Excellent corrosion resistance, high pressure resistance, strong adaptability, has been widely used in various production fields. Because some installation sites are more complex, it is inevitable to produce a variety of interference, Aister instrument to explain several common electromagnetic flow meter anti-interference methods:

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

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.

The plug-in electromagnetic flowmeter is an instrument for measuring conductive liquids, which is made based on Faraday’s law of electromagnetic induction. This type of instrument, due to its simple structure, light weight, easy installation and low maintenance, is used to measure the volume flow of non-corrosive (water supply and drainage) conductive liquids in closed pipelines.