Intelligent digitalization Electromagnitic Flowmeter

Working principle of the LDJ series electromagnetic flowmeter is based on Faraday’s law of electromagnetic induction.

When a conductive fluid flows through a measuring pipeline surrounded by a magnetic field, an induced electromotive force E proportional to the average flow velocity V is generated in the direction perpendicular to both the flow direction and the magnetic field. The induced electromotive force is detected by a pair of electrodes and expressed as follows:

E＝KBDV

K： Proportional constant;

B： Magnetic flux density;

D： Measure the inner diameter of the tube;

V： Measure the average flow velocity within the cross-section of the measuring tube

After signal E is processed by a converter, it outputs a frequency pulse signal proportional to the flow rate and an analog 4-20mADC current for subsequent instruments (such as flow display integrators, controllers, etc.) to complete flow detection and control tasks.

Product Features:

1.No movable parts, the instrument works very stably and reliably.

2.On site, the range can be modified according to user needs.

3.No obstruction components, no pressure loss during measurement.

4.The intelligent converter has a good human-machine interface and multiple application functions.

5.The measurement results are independent of physical parameters such as temperature, density, pressure, viscosity, etc. of the medium.

6.Integrated structure, easy to install and use. According to the needs, a split structure can be used. (Commonly used for large caliber meters or installation in trenches)

Application area:

Electromagnetic flow meters are suitable for measuring the flow of various conductive liquids, such as tap water, sewage, mud, pulp, various beverages, chemical raw materials, viscous liquids, and suspensions.

Main technical parameters:

Basic parameters, technical indicators, working conditions, and environment
Type I integrated electromagnetic flowmeter caliber DN (mm): 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
Type I split type electromagnetic flowmeter caliber DN (mm): 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
Type II electromagnetic flowmeter caliber DN (mm): 10, 15, 20, 25, 32, 40, 50, 65, 80,100, 125, 150, 200, 250, 300
Lining: Polychloroprene rubber, polyurethane rubber, polytetrafluoroethylene, soluble polytetrafluoroethylene, perfluoroethylene propylene
Electrodes: 316L, Hastelloy B, Hastelloy C, titanium, tantalum, platinum, etc., depending on product requirements.
Measurement accuracy: 0.2 level, 0.5 level, 1.0 level

Temperature of the tested medium: -20 to+65 ℃ (rubber)- 20~+160 ℃ (PTFE)- 60-180 ℃ (soluble polytetrafluoroethylene)- 20~+160 ℃ (perfluoroethylene propylene)
Work pressure: see data sheet. The excess pressure can be specially supplied
Minimum conductivity: 5 μ S/cm
Output signal: 4-20mADC proportional to flow rate, frequency and pulse quantity
Network function: optional MODBUS RS-232C、RS-485、REMOTE(HART)。
Intelligent converter: The electromagnetic flowmeter converter has the following functions:
On site LCD display: Instantaneous and cumulative flow are displayed on the same large LCD screen;
Self checking and self diagnostic functions such as conductivity measurement and excitation current measurement;
0-5000Hz pulse output;
Forward and reverse flow output;
Multiple alarms;
RS-485, Remote (HART) communication interface
Requirements for straight pipe section: upstream ≥ 5DN, downstream ≥ 2DN
Power supply: 220VAC, 50Hz or DC 24V
Connection method: flange connection, the flange conforms to
The provisions of GB/T9115-2000
Environmental temperature:- 20～+80℃
Relative humidity: 5% to 95% Power consumption: ≤ 10W
Protection level: Integrated IP66
Explosion proof grade: Ex deia Ⅱ CT4~T6Gb

Welcome to ask us for detailed product manuals.