Basic Info.
Application
Industrial Production
Type
Electromagnetic Flow Meter
Measuring Principle
Electrical Principles
Measurement Object
Closed Pipeline
Certification
JIS, DIN, ANS, GB, CE, ISO
Power Supply
220V/24V/Battery
Signal Output
4-20mA; Pulse
Supply Voltage
110/220VAC ; 24VDC +10%
Body Material
Carbon Steel
Nominal Pressure
1.0~4.0MPa
Transport Package
Cartons and Wooden Box
Product Description
Product Description
Product scope of application
Electromagnetic flowmeter is composed of two parts: sensor and converter. It works based on Faraday's law of electromagnetic induction and is used to measure conductive liquids or two-phase media. Its conductivity is generally required to be greater than 5 μ S/cm (the original conductivity of tap water is about 100-500 μ S/cm). It can be used to measure various acid, alkali, salt solutions, pulp, slurry and other media, but the media cannot contain a lot of ferromagnetic substances and a large number of bubbles.
Electromagnetic flowmeter is a major flow meter widely used in industrial sectors such as petroleum, chemical, metallurgical, textile, papermaking, environmental protection, food, as well as municipal management and water conservancy construction for flow measurement.
The measurement system of the electromagnetic flowmeter sensor is based on Faraday's law of electromagnetic induction. A pair of detection electrodes are installed on the pipe 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, it cuts the magnetic field lines and generates an induced potential. This induced potential is detected by two electrodes on the measuring tube, with a value of:
E=KBVD
Among them: E induced potential;
K instrument constant;
B magnetic induction intensity;
Measure the average flow velocity within the cross-section of the V measuring tube;
D Measure the inner diameter of the tube;
When measuring flow rate, the fluid flows through a magnetic field perpendicular to the flow direction, and the flow of conductive liquid induces an electric potential proportional to the average flow velocity. Therefore, it is required that the measured flowing liquid has a conductivity higher than the minimum limit. The induced voltage signal is detected through two electrodes. And it is transmitted to the converter through cables, and after signal processing and related operations, the accumulated flow rate and instantaneous flow rate are displayed on the converter's display screen.
Instrument features
1. There are no obstructions or moving parts inside the measuring tube, so it will not cause additional energy loss or blockage, resulting in significant energy-saving effects. It is particularly suitable for measuring liquid-solid two-phase flows such as sewage, mud, slurry, coal water slurry, pulp, etc.
2. Only the lining and electrode are in contact with the measured medium. As long as the lining and electrode materials are selected reasonably, good corrosion resistance and wear resistance can be achieved. Therefore, various chemical solutions such as strong acids and bases can be measured.
3. Low installation requirements. The front straight pipe section is only 5D, while the rear straight pipe section is 2D (D is the inner diameter of the selected instrument).
4. The measurement accuracy is not affected by changes in fluid density, viscosity, temperature, pressure, and conductivity, and can measure flow in both forward and reverse directions, which provides a good means for accurately measuring flow.
5. The power consumption of the instrument is low, less than 5VA.
6. The converter has good interchangeability and can achieve measurement accuracy without the need for re calibration of the real current. Due to its various advantages, electromagnetic flow meters are becoming increasingly widely used in various industries and have become the preferred instrument for liquid flow measurement.
Product Parameters
Ordering Instructions
Please read this information carefully before placing an order to understand the model and coding regulations of this product, and determine the model specifications as needed.
If necessary, please fill out the electromagnetic flowmeter selection operating condition table.
Technical parameters of AO-ATF-A/B (integrated/split type) universal electromagnetic flowmeter
1. Caliber DN10~DN2000
2. Electrode material 316 Hb,Hc,Ti,Ta,Pt
3. Inner lining materials PTFE, PFA, F46, chloroprene rubber, polyurethane
4. Dielectric conductive liquid (including solid-liquid two-phase)
5. Measurement errors of ± 0.3%, ± 0.5%, ± 1.0% flow rate (by caliber)
6. Dielectric conductivity>5 μ S/cm (water>20 μ S/cm)
7. Flow velocity range of 0.5-10m/s (flow unit can be selected)
8. Connect the flange according to the national standard GB9115 or according to user requirements
9. Integrated medium temperature -10 ºC~+60 ºC, split type -10 ºC~+150 ºC
10. Rated pressure 0.6MPa~4.0MPa (by caliber)
11. Protection levels IP65, IP67, IP68 (split type)
12. Converter with integrated or split design
13. Output signal 4-20mA output, frequency/pulse output
14. Communication RS485, RS232
15. Application of acid, alkali, water supply and drainage, food, pulp, slurry, etc
16. Display flow rate, flow rate, percentage, cumulative flow rate, fault alarm, etc
17. Power supply 220VAC, 24VDC
18. Installation form: integrated or split type
Technical parameters of AO-ATF-C/D (integrated/split) clamping electromagnetic flowmeter
1. Caliber DN10~DN200
2. Electrode material 316 Hb,Hc,Ti,Ta,Pt
3. Lining material PFA, F46
4. Dielectric conductive liquid (including solid-liquid two-phase)
5. Measurement errors of ± 0.3%, ± 0.5%, ± 1.0%
6. Dielectric conductivity>5 μ S/cm (water>20 μ S/cm)
7. Flow range 0.5-10m/s
8. Integrated medium temperature -10 ºC~+60 ºC, split type -10 ºC~+150 ºC
9. Rated pressure 1.6MPa~4.0MPa (by caliber)
10. Protection levels IP65, IP67, IP68 (split)
11. Output signal 4-20mA output, frequency/pulse output
12. Communication RS485, RS232
13. Application of acid, alkali, water supply and drainage, food, pulp, etc
14. Display flow rate, flow rate, percentage, cumulative flow rate, fault alarm, etc
15. Power supply 220VAC, 24VDC
16. Installation form: integrated or split type
Technical parameters of intelligent converter
conductivity | >5μS/cm |
flow rate range | 0.5~ 10m/s |
current output | Bidirectional two-way, fully isolated, 0-10mA (load resistance 0-1.2K Ω), 4-20mA (load resistance 0-600 Ω) |
Frequency output | The upper limit is set within 0-3KHz. Open collector output of transistor with photoelectric isolation |
pulse output | The upper limit can reach 5000cp/s, and the pulse equivalent is 0.0001-10m3/cp. The pulse width is between 10ms and 2.5s. Transistor collector open circuit alarm output with photoelectric isolation, collector open circuit alarm output with positive and negative flow state. The external power supply for the above three outputs is not greater than 35V. When conducting, the collector current is 250mA |
communication interface | RS485,RS232 |
quarantine | The insulation voltage between the analog output, pulse output, alarm output and the ground shall not be less than 500V |
power supply | 220VAC,24VDC |
power | ≤20W |
ambient temperature | -10~+ 60ºC |
display | High definition backlit LCD display, instantaneous, cumulative (forward cumulative, reverse cumulative, and differential cumulative) |
power-off protection | Accumulated value data saved for more than 10 years |
Shell protection | IP65,IP67,IP68(split type) |
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Company Profile
Founded in 2007, Fujian Aotai Automation Equipment Co., Ltd. is located in the beautiful Fuzhou, Fujian. It is an enterprise dedicated to providing measurement and control instruments and equipment for "intelligent manufacturing", "smart water" and "smart city". The company's goal is to become an enterprise with advanced technology, professional service and strong competitiveness in the industry. Since its inception, it has been adhering to the concept of "creating a century-old store and establishing a national brand", focusing on the research and development, production, sales and service of instrumentation, and striving to create value for customers.
Address:
Fuzhou, Fujian, China
Business Type:
Manufacturer/Factory
Business Range:
Instruments & Meters
Company Introduction:
Founded in 2007, Fujian Aotai Automation Equipment Co., Ltd. is located in the beautiful city of Fuzhou, Fujian Province. It is an enterprise dedicated to providing measurement and control instruments and equipment for "Intelligent Manufacturing", "Smart Water Affairs" and "Smart City". The company aims to become an enterprise with advanced technology, professional services and strong competitiveness within the industry. Since its establishment, it has adhered to the concept of "creating a century-old store and establishing a national brand", focusing on the research and development, production, sales and service of instruments and meters, and striving to create value for customers. In the first ten years of its entrepreneurship, the company mainly focused on industrial process control instruments. It has successively developed multiple series of products, including panel-mounted instruments, pressure instruments, flow instruments, rail-mounted instruments, level instruments, and analytical instruments. These products are widely used in industries such as metallurgy, chemical engineering, light industry, pharmaceuticals, environmental protection, and petroleum. In recent years, with the popularization and development of modern communication technology applications, as well as the increased management requirements in municipal administration, water conservancy, and agriculture, Internet of Things (IoT) instruments have begun to be promoted in these fields. The company has seized the opportunity to develop a series of IoT perception layer products for these fields, such as acoustic tomography river cross-section flow meters, road waterlogging meters, Doppler flow meters, radar surface flow velocity meters, paddy field water level meters, and underground combined water level meters. At the same time, these products have been rapidly promoted and applied in multiple provinces and cities, and have received favorable comments from users. The company′s competitiveness lies in combining its many years of mature experience in industrial instrument design with modern communication technology, making the newly developed products have the characteristics of convenient debugging, low power consumption, strong stability, and high precision. Currently, the company has set up more than a dozen offices across the country, which is convenient for providing services to a large number of users nearby. The company always adheres to the core values of "customer-centric, based on strivers, striving for perfection, innovation-driven, and keeping up with the times". We will continue to forge ahead in the fields of IoT instruments and traditional industrial instruments, contributing the wisdom of Aotai.
