Compact Inline Electromagnetic Flow Meters

Inline Electromagnetic Flow Meter Compact type

Inline Electromagnetic Flow Meter Split Type

DN50 split electromagnetic flowmeter with display

Inline Electromagnetic Flow Meter Compact type back

Inline Electromagnetic Flow Meter | Compact & Split Type

Inline Electromagnetic Flow Meter is suitable for flow measurement of conductive liquids and slurries in closed pipes. Sino-Inst manufactures and supplies Compact & Split Type electromagnetic flowmeters. It can measure water, sewage, mud, pulp, various acids, alkalis, salt solutions, food slurries, etc.

1. Wide range of measuring diameter: DN6~DN3000;
2. Power supply AC220V/DC24V optional;
3. Standard 4~20mA, pulse output, optional RS485;
4. The instantaneous flow, cumulative total volume, and flow rate can be displayed simultaneously;
5. The body material is carbon steel, optional 304 stainless steel;
6. With report function. There are daily reports, monthly reports, and annual reports;
7. Can choose linings of different materials and electrodes of different materials, suitable for different liquids.

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Inline Electromagnetic Flow Meter Description

Inline Electromagnetic Flow Meter works based on Faraday’s law of electromagnetic induction. The principle of electromagnetic induction is applied to measure the flow rate of conductive fluid based on the electromotive force induced when the conductive fluid passes through an external magnetic field.

Sino-Inst has many years of experience in the production of electromagnetic flow meters. Use reinforced lining and reinforced shell to enhance the protection of the electromagnetic flowmeter and make it durable. Modular meter head, protection and anti-interference are upgraded at the same time. The addition of pure copper coils makes the signal more accurate and stable, far exceeding that of aluminum wires.

Inline Electromagnetic Flow Meters produced by our Sino-Inst are widely used in tap water, domestic sewage, industrial sewage, electroplating, printing and dyeing wastewater, clean seawater circulating water, chemical acid and alkali solutions, mud and pulp, etc.

Inline Electromagnetic Flow Meter display units are:

Volume flow unit: L/s, L/min, L/h, m³/s, m³/min, m³/h;
Mass flow unit: kg/s, kg/m, kg/h, t/s, t/m, t/h;
Users can select a suitable flow display unit based on process requirements and usage habits.

Inline Electromagnetic Flow Meter Technical Specifications

Implementation standards	JB／T 9248—1999
Nominal diameter	10、15、20、25、32、40、50、65、80、100、125、150、200、250、300、350、400、450、500、600、700、800、900、1000、1200、1400、1600、1800、2000、2200、2400、2600、2800、3000
Maximum flow rate	15m／s
Accuracy	DNl5～DN600: Indicating value: ±0.3% (flow rate ≥1m/s); ±3mm/s (flow rate <1m/s)
	DN700—DN3000: Indicating value: ±0.5% (flow rate ≥0.8m/S); ±4mm/s (flow rate <0.8m/S)
Fluid conductivity	≥5uS／cm
Nominal pressure	DN15～DN150 4.0MPa
	DN15～DN600 1.6MPa
	DN200～DN1000 1.0MPa
	DN700～DN3000 0.6MPa
	Special customization 6.3、10MPa
Ambient temperature	sensor: -40℃~+80℃
	Converter and integrated type: -10℃~+60℃
Lining material	PTFE, polychloroprene, polyurethane, polyperfluoroethylene-propylene (F46), screened PFA
Maximum fluid temperature	Compact/Integrated type:70℃
	Split Type: Polyneoprene lining： 80℃, 120℃ (please specify when ordering); Polyurethane lining： 80℃; PTFE lining, Polyperfluoroethylene-propylene (F46), Screening PFA： 100℃; 150℃ (please specify when ordering)
Signal electrode and ground electrode materials	Stainless steel 0Crl8Nil2M02Ti, Hastelloy C, Hastelloy B, titanium, tantalum, platinum/iridium alloy, stainless steel coated tungsten carbide
Electrode mechanism	DN300—DN3000
Connection flange material	carbon steel
Ground flange material	Stainless steel 1Crl8Ni9Ti
Imported protective flange materials	DN65—DN150: Stainless steel 1Crl8Ni9Ti
	DN200～DN1600: Carbon steel + stainless steel 1Crl8Ni9Ti
Housing protection	DN10～DN3000 split type rubber or polyurethane lined sensor: IP65 or IP68
	Other sensors, flowmeters and separate converters: IP65
Spacing (separate type)	The distance between the converter and the sensor is generally not more than 100m

Converter technical data:

Power supply	AC 85—265V，45—400Hz
	AC 85—265V，45—400Hz	DC 11—40V
	Power	<20W (matched with sensor)
Internal totalizer	There are total totalizers for forward flow, reverse flow and difference.
output signals	Current output: ·Output signal: two-way bidirectional, fully isolated(0~10)mA/(4~20)mA ·Load resistance: (0~10)mA, (0~1.5)kΩ; (4~20)mA, (0~750)kΩ ·Basic error: Add ±10μA to the above basic measurement error.
	Frequency output: ·Forward and reverse flow output, the upper limit of the output frequency can be set within (1~5000) Hz ·Transistor open collector bidirectional output with photoelectric isolation ·The external power supply should not be greater than 35V, and the maximum collector current when turned on is 250mA
	Pulse output: ·Forward and reverse flow output, the upper limit of the output frequency can reach 500cp/s ·The pulse width is automatically set to 20ms or square wave ·Transistor open collector bidirectional output with photoelectric isolation ·The external power supply should not be greater than 35V. The maximum collector current when turned on is 250mA
	Flow direction indication output: ·Can measure fluid flow in both forward and reverse directions, and can determine the direction of fluid flow. ·Output +10V high level when displaying forward flow ·Output 0V low level when displaying reverse flow
	Alarm Output: ·Two transistor open-collector alarm outputs with photoelectric isolation ·The external power supply should not be greater than 35V, and the maximum collector current when turned on is 250mA. ·Alarm status: empty fluid pipe, excitation disconnection, flow over limit
	Communication Interface:RS-232C, RS-485, MODBUS, HART, with lightning protection
Damping time	Optional binning between 0~100s (90% of the time)
electrical isolation	The insulation voltage between analog input, analog output, alarm power supply and pulse output, AC power supply and earth is not less than 500V
normal working conditions	Ambient temperature: split type (-10~+60)℃
normal working conditions	Relative humidity: 5%~90%

Lining material selection：

Lining material	Linner	Main performance	Application
Rubber	Neoprene(CR)	1. It has excellent flexibility. High tearing force. Good wear resistance. 2. Resistant to the corrosion of low-concentration acid, alkali, and salt media. Not resistant to corrosion by oxidizing media.	1. <60℃ 2. General water, sewage, mud and mineral slurry with weak abrasiveness
	Polyurethane Rubber(PU)	1. It has excellent wear resistance (equivalent to ten times that of natural rubber) 2. Poor acid and alkali resistance. 3. It cannot be used for water mixed with organic solvents.	1. <80℃ 2. Neutral and strong abrasion ore slurry, coal slurry, mud, etc.
	Silicone rubber	1. It has excellent flexibility. High tearing force. Good wear resistance. 2. High temperature resistant non-corrosive medium.	1. <180℃ 2. Hot water
Fluoroplastics	PTFE(F4)	1. It is a material with the most stable chemical properties in plastics. Can withstand boiling hydrochloric acid, sulfuric acid, nitric acid and aqua regia. It is also resistant to concentrated alkali and various organic solvents. Not resistant to the corrosion of chlorine trifluoride, high temperature oxygen trifluoride, high flow rate liquid fluorine, liquid oxygen, and ozone. 2. Poor wear resistance. 3. Poor anti-negative pressure ability.	1. <120℃ 2. Strong corrosive media such as concentrated acid and alkali 3. Sanitary medium
	Teflon F46(FEP)	1. The chemical properties are equivalent to PTFE 2. Tensile strength and abrasion resistance are better than PTFE	1. <180℃ 2. Corrosive acid-base salt
	PFA	1. The chemical performance is equivalent to F46 2. Compressive and tensile strength due to F46	1. <180℃ 2. Corrosive acid-base salt 3. High pressure and negative pressure resistance

Electrode material selection:

Material	Medium
316L	Domestic water, industrial water, raw water, urban sewage, etc.
Hastelloy B (HB)	Sodium hydroxide ammonium hydroxide alkali solution and weak organic acid
Hastelloy C (HC)	Oxidizing salt solution (Fe+++, Cu++, seawater)
Titanium (Ti)	1. Salt solution (chloride, sodium salt, potassium salt, ammonium salt, sea water, etc.) 2. Alkaline solution (such as concentration less than 50% potassium hydroxide solution)
Tantalum(Ta)	1. Hydrochloric acid, sulfuric acid, oxidizing acid, aqua regia 2. Chlorine dioxide, ferric chloride, hypochlorous acid, sodium cyanide, lead acetate, etc.
Platinum (Pt)	Acid, alkali, salt solution
Tungsten carbide (WC)	Handled neutral industrial sewage and domestic sewage. Resistant to solid particle interference

Get Reliable Inline Magnetic Flow Meter for Liquids

As a professional manufacturer of electromagnetic flow meters, Sino-Inst can supply Inline Electromagnetic Flow Meters of various pipe diameters, and can customize integrated or split types, etc. Better prices! More reliable measurements!

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Inline Magnetic Flow Meter Applications

The electromagnetic flowmeter uses the principle of electromagnetic induction and can measure 99% of conductive liquids.
1. Water: tap water, cooling water, river water, etc.;
2. Sewage: domestic and production sewage, industrial wastewater, etc.;
3. Acid solution: sulfuric acid, nitric acid, hydrochloric acid and other acidic solutions;
4. Alkali solution: sodium hydroxide, caustic soda and other alkaline solutions;
5. Salt solution: sea water, salt water and other saline solutions;
6. Slurry: paper pulp, cement slurry, mud, coal slurry and other solid solutions.

Inline Electromagnetic Flow Meter | Compact & Split Type Detail Display

More Detail

What is an inline flow meter?

Inline flow meter refers to a type of flow meter that needs to be incorporated into the measuring pipe for installation. In other words, when installing an inline flow meter, you need to intercept a section of the original pipeline and install the flow meter on the intercepted pipeline.
Relatively speaking, flow meters that do not need to cut off the pipeline include external clamp flow meters, insertion flow meters, etc.

How does an electromagnetic flow meter work?

Electromagnetic flow meters utilize Faraday’s law of induction to detect flow. A pair of detection electrodes are installed on the tube wall perpendicular to the axis of the measuring tube and the magnetic field lines. When the conductive liquid moves along the axis of the measuring tube, the conductive liquid cuts the magnetic field lines to generate an induced electric potential. This induced potential is detected by two detection electrodes, and the value is proportional to the flow rate. Its value is: E=KBVD.

In the formula:
E – induced electric potential;
K – coefficient related to magnetic field distribution and axial length;
B – magnetic induction intensity;
V – average flow velocity of conductive liquid;
D – electrode distance; (measuring tube inner diameter)

The sensor transmits the induced potential E as a flow signal to the converter. After amplification, transformation and filtering, and a series of digital processing, the instantaneous flow and accumulated flow are displayed on a dot matrix LCD with backlight. The converter has 4~20mA output, alarm output and frequency output, and is equipped with RS-485 and other communication interfaces, and supports HART and MODBUS protocols.

What is conductivity of liquid?

When using an electromagnetic flowmeter, there is one point that should be paid special attention to. Since electromagnetic flowmeters are based on the law of electromagnetic induction, they can only detect the flow of conductive liquids. Whether it is a conductive liquid depends on its conductivity . So what is conductivity?

Conductivity is usually a value that indicates how easily electricity flows. The opposite value is resistivity, which indicates how difficult it is for electricity to flow. A common unit is S/cm. To determine how easily electricity flows, place 1 cm2 electrodes 1 cm apart. Some examples of actual measured conductivity are as follows, the conductivity of tap water is between 100 and 200 μS/cm, mineral water is between 100 and 500 μS/cm, and pure water is 0.1 μS/cm or less.

In order to calculate conductivity, it is necessary to correctly calculate conditions such as electrode area and distance between electrodes. This makes calculations quite difficult. The general method of determining conductivity is to measure it with a conductivity meter.