DYDLThe series electromagnetic flowmeter consists of two parts: a sensor and a converter. The sensor consists of a measuring tube, measuring electrodes, excitation coil, iron core, magnetic yoke, and housing. Measure the unobstructed flow components inside the tube,No pressure loss,Not affected by changes in fluid density, viscosity, temperature, pressure, and conductivity. The converter adopts a novel excitation method, with low power consumption, stable zero point, and high accuracy. Equipped with three integrators: forward total, reverse total, and differential total; Can display downward and reverse traffic, and has multiple outputs:Current, pulse, digital communicationHARTAlarm, etc., used for measuring and controlling fluid flow. Adopting surface mounting technology（SMT)It has self inspection and self diagnosis functions.

2、 Product composition form

Integrated: The sensor and converter are installed together.

Split type: Sensors and converters are installed separately, forming a flow metering system through connecting cables.

Insertion type: Sensors and converters are installed separately, forming a flow metering system through connecting cables.

To meet the requirements of measuring different media, there are multiple choices for the lining and electrode materials of sensors.

3、 Working principle

The working principle of electromagnetic flowmeter is based on Faraday's law of electromagnetic induction. The two electromagnetic coils at the upper and lower ends in the figure generate a constant or alternating magnetic field. When a conductive medium flows through the electromagnetic flowmeter, an induced electromotive force can be detected between the left and right electrodes on the flowmeter tube wall. The magnitude of this induced electromotive force is proportional to the flow velocity of the conductive medium, the magnetic induction intensity of the magnetic field, and the conductor width (the inner diameter of the flowmeter measuring tube). The medium flow rate can be obtained through calculation. 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 detection electrodes, and the value is proportional to the flow rate,

Its value is:

E=KBVD

Where: E-Induced potential;D-Electrode spacing;(Measure the inner diameter of the tube)

B-Magnetic induction intensity;V-Average flow velocity of conductive liquid;

K-Coefficient related to magnetic field distribution and axial length.

The sensor will sense electric heatingEAs a flow signal, it is transmitted to the converter, amplified, transformed, filtered, and subjected to a series of digital processing, and then displayed on a backlit dot matrix LCD for instantaneous and cumulative flow. The converter has4~20mAOutput, upper and lower limit alarm output, and frequency output, and equipped withRS-485Waiting for communication interfaceHartagreement.

4、 Instrument features

● There is no obstruction in the measuring tube, and the pressure loss is zero, making it less prone to blockage.

● As long as the electrode and lining materials are selected reasonably, the requirements for corrosion resistance and wear resistance can be achieved.

● The measurement results are related to the pressure, temperature, density, viscosity, and conductivity of the liquid(Not less than the minimum conductivity)The physical parameters are basically independent and not affected by the environment, so the measurement accuracy is high, the work is stable, and reliable.

● By adopting modern analog signal conversion technology and high-performance ultra large scale integrated chips, signals are isolated, filtered, amplified, and digitally processed. Accurately display measurement results.

● Automatic monitoring and correction of parameters that affect measurement results, such as zero point correction, and setting and correcting segmented flow coefficients for the entire range, have expanded the measurement range, improved intelligence and measurement accuracy, and greatly enhanced stability performance.

● It has the functions of power-off protection and over range alarm for measurement values, and can set the flow direction of the fluid inside the sensor. Therefore, the installation of the sensor is not limited by the direction of liquid flow and can achieve bidirectional flow measurement.

● Adopting a backlit dot matrix dual row flow display, it can simultaneously display instantaneous flow, cumulative flow, and display working status, parameters, measurement units, etc.

● The range of electromagnetic flowmeter is wide(maximum flow/Minimum flow rate), Normal Scope of Application20: 1Generally30: 1Or larger.

● The instrument configuration has multiple output functions and can be matched with computers and unit combination instruments to meet the requirements of printing, communication, and networking.

4、 Product application

Electromagnetic flowmeter is a high-performance and highly reliable flowmeter. Widely used in high-precision measurement of impurity free conductive liquids in fields such as petroleum, chemical, metallurgical, textile, papermaking, water supply, heating, environmental protection, food, municipal management, water conservancy construction, diesel, lubricating oil, heavy oil, etc.

5、 Technical parameters

6、 Product selection

Please consult our sales personnel for product selection