Electromagnetic flowmeter
3 week ago
Product details
Product Overview
Nominal diameter series DN(mm)
DN10-3200, plug-in type ≥DN200
Note: Special formats can be customized
Electromagnetic flowmeter is a new type of electromagnetic flow measurement instrument designed based on Faraday's electromagnetic induction theory. It mainly consists of three parts: sensor, converter and display instrument. It can be used to measure the volume flow of conductive fluid in a closed pipeline.
Working Principle
When the conductive fluid flows in a pipeline with an external magnetic field, it will cut the magnetic lines of force and output an induced voltage on the detection electrode of the sensor. After the voltage signal is received by the converter, it is amplified, corrected, converted, and displayed on the display instrument. The flow of the conductive liquid can be calculated by the measured voltage signal.
| Flow direction | forward, reverse, net flow |
| Repeatability error | ±0.1% of measured value |
| Accuracy | Pipeline type: 0.2 level 0.5 level 1.0 level |
| Insertion type: 2.5 level | |
| Temperature of the measured medium | Rubber lining: -20℃~80℃ |
| PTFE lining: -30℃~150℃ |
Ordering instructions when the medium temperature is greater than 80℃
Rated working pressure
| Ordinary type | DN10-DN50: S4.0MPa |
| DN65-DN400: ≤1.6MPa | |
| DN400-DN600: ≤1.6MPa | |
| DN600 and above: ≤1.0MPa | |
| Plug-in type | ≥DN200：0.25MPa-4MPa |
Special pressure specifications when ordering
| Flow measurement range | The flow measurement range corresponds to a speed range of 0.3~10m/s |
| Pipeline type | 0.3~10m/s |
| Plug-in type | 0.3~10m/s |
| Relative humidity | 5%~95%RH |
| Environmental temperature | Sensor 40℃~80℃ |
| Converter -25℃~60℃ | |
| Plug-in type -25℃~60%C | |
| Communication interface | RS232 RS485 HART |
| Conductivity range | Conductivity of the measured fluid is 25ps/cm. Most water-based media have a conductivity range of 200~800us/cm, and electromagnetic flowmeters can be used |
| Output current and load resistance | 4~20mA fully isolated load resistance <7500 |
| Pulse frequency | 0~5KHz (load resistance ≥3000) photoelectric isolation OCT external power supply ≤35V |
| Electrode material | platinum-containing stainless steel, titanium, tantalum, Hastelloy platinum or other special electrode materials |
| Power supply | AC220V50Hz, DC24V |
| Protection level | submersible type IP68 other types IP67 |
| Straight pipe length | pipeline upstream 210DN downstream ≥5DN |
| Connection method | pipeline GB9119-2000 standard flange plug-in threaded connection ball valve specification DN50 |
| Explosion-proof mark | Ex db ib mb ⅡCT6 Gb;Ex tb ШC T80'C Db |
Product Classification
According to the composition structure: the sensor and converter of the separated electromagnetic flowmeter are placed separately. The converter can avoid the influence of harsh environment, but the anti-electromagnetic interference ability is weak; the integrated type integrates the sensor and converter into an integrated design, which is easy to wire and low cost, but is easily restricted by the pipeline layout and inconvenient to maintain.
According to the excitation method: there are DC excitation type, AC power frequency excitation type, low-frequency rectangular wave excitation type and dual-frequency excitation type. Among them, the low-frequency rectangular wave excitation type is widely used, and the dual-frequency excitation type has excellent stability.
According to the purpose: there are general type, explosion-proof type, sanitary type, anti-immersion type, submersible type and insertion type, etc., which can meet the special needs of different industries.
Meiante Technology Co., Ltd. mainly deals in various measuring instruments, including Level Instrument, Flow Meters, Pressure Instruments, Temperature Instrument and Calibration Instrument, etc.
If you have any needs, please contact us.
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Suppliers
Jiangsu Meiante Technology Co., Ltd
Audited supplier
4 month
Main Product:
Pressure transmitter,
Liquid level meter,
Temperature transmitter,
Flowmeter,
valve ,
Wire and cable