feature

1. The biggest advantage of an electromagnetic energy meter is its high stability, no drift, and good repeatability

   The intelligent electromagnetic energy meter adopts low-frequency rectangular wave excitation with stable excitation current. This excitation method has the characteristics of being less affected by electromagnetic interference, not producing eddy current effect, less orthogonal interference and in-phase interference, and not producing polarization phenomenon. Therefore, the electromagnetic flowmeter has the advantages of low current, low power consumption, no heat generation, zero point stability, no drift, and less electrode pollution impact.
   　　2The output of the electromagnetic energy meter is independent of the flow state under symmetrical distribution (laminar and turbulent), so the range ratio is extremely large, which can achieve100∶1The measurable flow velocity range is0.3～12m/s,(Expand scope0.1～15m/s)The fluid flow rate inside.
   　　3There are no components inside the conductive fluid flow measurement tube that obstruct fluid flow, such as dirty media, corrosive media, and suspended liquid-solid two-phase media. The only components in contact with the fluid are the electrodes and lining, which are not blocked or sticky. According to the different corrosiveness, wear resistance, and temperature of the medium, different liners and electrodes are selected to measure the flow rate of contaminated, corrosive, and suspended liquid-solid two-phase media.
   　　4No additional pressure loss or energy consumption.

2. No mechanical inertia, sensitive response, can measure instantaneous pulsating flow, and can also measure flow in both positive and negative directions.

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

   Converter withLCDDisplay, press the button to set the menu, the standard output signal is frequency signal, and you can also choose4～20mA

4. Current outputHARTProtocol communication.

5. The converter utilizes patented technology for functional magnetic field analysis, completely eliminating the influence of bias current and ensuring accurate and stable measurements

6. For measurements with“Slurry noise”Interference with slurry flow rate,Intelligent electromagnetic flowmeterMiddle with belt“Noise suppressor”The patented technology converter can completely eliminate clutter, ensuring stable and accurate measurement.

7. The converter circuit has lightning protection components, suitable for field installation and use

8. The unique multi electrode structure completely eliminates electrical noise interference, which is more conducive to improving measurement accuracy.

The unique electrode lead method completely eliminates orthogonal interference and zero drift, makingGFM82The series electromagnetic flowmeter has more stable measurement. Has good linearity and repeatability

Installation site selection

1. Choose a location where there will be no negative pressure inside the measuring tube
   2Avoid installing in accessories of strong electrical equipment such as motors and transformers to prevent electrical interference
   3Avoid places with strong corrosive gases around the installation location
   4When measuring mixed phase fluids, avoid locations that may cause phase separation
   5The ambient temperature should generally be within-25℃～60℃Within the scope, try to avoid direct sunlight as much as possible
   6When installed in environments without vibration or with low vibration, if the vibration is too high, fixed supports should be added to the pipes before and after the sensor
   7The relative humidity of the environment should be within10%～90%within the scope of
   8Avoid installing in places that can be directly rained or submerged by rainwater

   Requirements for installing straight pipe sections

   Requirements for the length of straight pipe sections:（DThe inner diameter of the flowmeter

   Electromagnetic flow meters have relatively low requirements for the front and rear straight pipe sections, generally for90°Elbow,TFlow resistance components such as tees, reducers, and fully open valves should be located at a distance from the centerline of the electrode shaft of the electromagnetic flowmeter (not the end face of the sensor)5DThe straight pipe section; For valves with different degrees of opening (such as adjustable valves), the length of the straight pipe section on the upstream side needs to be adjusted10DThe straight pipe section downstream of the general sensor only needs to3DCan meet the requirements,

   When measuring mixed liquids of different media, the distance between the mixing point and the flowmeter should be at least greater than30D