Introduction to FWMLF-A1 Magnetic Label Magnetic Fluid Flow Meter:

Measurement principle of magnetic marking magnetic fluid flowmeter

The measurement principle of a magnetic marked magnetic fluid flowmeter can be simply described as follows: using a pulsed magnetic field to locally magnetize the fluid upstream and form a magnetic cylinder - marking the local magnetic fluid. When the magnetic cylinder flows through a series of magnetic electric sensors downstream, due to Faraday's law of electromagnetic induction, the velocity effect of the magnetic cylinder will excite an induced electric field. The magnetic electric sensor senses the changes in the induced electric field, and the response curve is recorded and analyzed. Combined with the position parameters of the series sensor and the time series signals of the response curve characteristic points, the slurry flow rate is calculated. The volumetric flow rate of the magnetic fluid can be obtained by multiplying the flow velocity value with the area of the inner cross-section of the flowmeter pipeline.

In principle, the magnetic marked magnetic fluid flowmeter is a volumetric flowmeter. If combined with a concentration meter or density meter, the mass flow rate of the magnetic fluid can be given.

Due to the fact that the magnetic pulse signal transmission unit is the main power consuming device, but the pulse time is in the millisecond range, and the time interval between two magnetic pulse transmissions is in the second range, the occurrence time of high power consumption only accounts for one thousandth of the total time. Therefore, this flowmeter can be designed as a low-power instrument, with an average power consumption of 5-40W (related to the caliber).

Technical characteristics of "magnetic marking magnetic fluid flowmeter"

(1) There are no measuring components inside the pipeline, and apart from the lining material, there are no wear or pollution issues. It can operate stably for a long time.

(2) The measurement principle is unique, unaffected by the environment, without parameter drift issues, and always maintains high precision measurement.

(3) No on-site calibration is required, installation is sufficient for use.

Parameters

measuring range

0.5 - 20 m/s

measurement accuracy

±0.5% F.S

repeatability

±0.1%

Pipeline diameter

DN6—600

Lining material

UHMWPE (3 million molecular units)

Measurement medium

magnetic fluid

Working pressure

0.1MPa – 4.0MPa

Dielectric permeability

≥1.26×10-3 H/m

Maximum temperature of the medium

≤96℃

ambient temperature

-40℃ ～ 65℃

Working pressure

0.1MPa ～ 4.0MPa

protection grade

IP65

output signal

4 ～ 20mA，RS485

Connecting flange

GB9115

communication

RS485

power supply

220VAC

power consumption

5-40W (related to caliber)

Application

Flow measurement of magnetic fluid and iron ore slurry