characteristic:

The biggest advantage of electromagnetic energy meter is very stable, no drift, good repeatability.

1.The intelligent electromagnetic energy meter adopts low-frequency rectangular wave excitation, and the excitation current is stable. This excitation mode has the characteristics of small electromagnetic interference, no eddy current effect, small orthogonal interference and in-phase interference, and no polarization phenomenon. Therefore, the electromagnetic flowmeter has the advantages of small current, low power consumption, no heating, stable zero point, no drift and little electrode pollution.

2. The output of electromagnetic energy meter has nothing to do with the flow state under symmetrical distribution (laminar flow and turbulent flow), so the measuring range is 100 ∶ 1, and the flow rate can be measured in the range of 0.3 ~ 12m / S (extended range: 0.1 ~ 15m / s).

3. It can measure the flow rate of conductive fluid such as dirty medium, corrosive medium and suspended liquid-solid two-phase medium. There is no component hindering the fluid flow in the measuring tube, and only the electrode and lining are in contact with the fluid. According to the different corrosivity, abrasiveness and temperature of the medium, different linings and electrodes are selected to measure the liquid-solid two-phase flow rate of dirt, corrosivity and suspension.

4. There is no additional pressure loss and energy consumption.

It has no mechanical inertia and sensitive response. It can measure instantaneous pulsating flow rate and flow rate in both positive and negative directions.

It is not affected by temperature, viscosity, density and conductivity (within a certain range) in the measurement process, and the measurement is stable.

The converter is equipped with LCD display and menu setting with buttons. The standard output signal is frequency signal, and 4-20mA can be selected.

Current output, HART protocol communication.

The converter uses the patent technology of functional magnetic field analysis to eliminate the influence of bias current and ensure the accuracy and stability of measurement.

For the measurement of slurry flow with "slurry noise" interference, the intelligent electromagnetic flowmeter has a patented technology converter with "noise suppressor", which can completely eliminate clutter and ensure the stability and accuracy of measurement.

The converter circuit has lightning protection components, which is suitable for field installation.

With the unique multi electrode structure, the electrical noise interference is completely eliminated, which is more conducive to improve the measurement accuracy.

The unique electrode lead way completely eliminates the orthogonal interference and zero drift, making the measurement of gfm82 series electromagnetic flowmeter more stable. It has good linearity and repeatability.

Installation site selection:

1. Choose a place where there is no negative pressure in the measuring tube.

2. Avoid installing it in the accessories of heavy current equipment such as motors and transformers to avoid electrical interference.

3. Avoid places with strong corrosive gas around the installation location.

4. When measuring mixed-phase fluids, avoid places that cause phase separation.

5. The ambient temperature should generally be in the range of -25℃～60℃, avoid direct sunlight as much as possible.

6. Install in a place where there is no vibration or choose small vibration. If the vibration is too large, fixed supports should be added to the pipes before and after the sensor.

7. The relative humidity of the environment should be in the range of 10% to 90%.

8. Avoid installing in places that can be directly drenched or submerged by rain.

Installation requirements for straight pipes:

Requirements for the length of straight pipe section: (D is the inner diameter of the flowmeter)

Electromagnetic flowmeters have relatively low requirements for the front and rear straight pipe sections. Generally, for 90° elbows, T-shaped tee, reducers, full-open valves and other flow resistance parts, they are away from the center line of the electrode shaft of the electromagnetic flowmeter (not the end face of the sensor) There should be a 5D straight pipe section; for valves with different opening degrees (such as adjustable opening valves), the length of the straight pipe section on the upstream side needs to be 10D. Generally, the straight pipe downstream of the sensor only needs 3D to meet the requirements. When measuring mixed liquids of different media, the distance between the mixing point and the flowmeter must be at least 30D.