The MEJ-LDG Remote type electromagnetic flowmeter is based on Faraday’s law of electromagnetic induction and can accurately measure the volumetric flow rate of conductive liquids and slurries in closed pipelines. It consists of sensors and converters, with advantages such as high measurement accuracy, wide range, and low pressure loss. It can achieve remote data transmission through multiple output methods and is widely used in various fields such as water supply and drainage, chemical industry, metallurgy, etc
Characteristics
Accuracy: ±0.5% (Flow speed > 1m/s)
Reliably: 0.15%
Theoretical value: Water: Min. 20μS/cm; Other liquid: Min. 5μS/cm
Recommended value: ＞30μS/cm
Flange: ANSI/JIS/DIN DN15… 1000
Ingress protection: IP68
Measuring principle:
MEJ-LDG Remote type electromagnetic flowmeter based on Faraday’s law of electromagnetic induction, when a conductive liquid moves in the direction perpendicular to the magnetic field lines along a measuring tube in an alternating magnetic field, the conductive liquid cuts the magnetic field lines and generates an induced potential. A pair of electrodes are installed on the tube wall perpendicular to the axis of the measuring tube and the magnetic field lines. The electrodes detect the induced potential generated, which is proportional to the flow rate. By measuring the induced potential, the flow rate through the sensor can be derived.
Structural composition of the MEJ-LDG Remote type electromagnetic flowmeter:
1.Sensors: mainly composed of measuring tubes, excitation systems, electrodes, etc. The measuring tube is the flow channel of the measured medium, the excitation system is used to generate an alternating magnetic field, and the electrodes are responsible for detecting the induced potential.
2.Converter: Its function is to convert the electrical signal sent by the sensor into a digital signal after internal processing, achieve flow measurement, and perform functions such as data processing, display, storage, and transmission.
| Product | Electromagnetic flowmeter |
| Model | MEJ-LDG |
| Diameter nominal | DN15~DN1200 |
| Nominal pressure | DN15 – DN250, PN ≤1.6MPa; DN300 – DN1000, PN ≤1.0MPa; DN1200, PN ≤0.6 MPa; Higher pressure can be customized |
| Accuracy | ±0.5% F.S. (Flow speed > 1m/s); ±0.5% F. S. ±2mm/s (Flow speed <1m/s) |
| Liner material | Neoprene (CR), Polyurethane (PU), PTFE (F4), PFEP (F46), PFA |
| Electrode material | 316L Stainless Steel, Hastelloy C, Hastelloy B, Ti, Ta, Pt |
| Medium temperature | Neoprene: -10…+60℃ Polyurethane: -10…+60℃ PTFE/FEP: -10…+120℃ PFA: -10…+180℃ |
| Power supply | 85-245VAC，50/60Hz, 22VDC-26VDC |
| Electrical conductivity | Water min.20μS/cm;other medium min.5μS/cm |
| Structure type | Compact type, Remote type |
| Ingress protection | IP65 for converter, IP68 for sensor |
| Product standard | JB/T 9248-1999 Electromagnetic Flow Meter |
Component workshop
Calibration workshop
Product verification
