Electrode: The function of the electrode is to elicit an inductive potential signal proportional to the measured potential. Electrodes are usually made of non-magnetic stainless steel and need to be aligned with the lining so that the fluid can pass unimpeded. It should be installed in the vertical direction of the pipeline to prevent sediments from accumulating on the pipeline, affecting the measurement accuracy. Humidity sensor probe, stainless steel electric heat pipe PT100 sensor, cast aluminum heater, heating ring, fluid electromagnetic valve, measurement tube: its function is to allow the measured conductive fluid to pass.
In order for the magnetic field line to divert or short-circuit magnetic flux when passing through the measurement catheter, the measurement catheter must be made of non-magnetic conductivity, low conductivity, low thermal conductivity and materials with a certain mechanical strength, and non-magnetic stainless steel, fiberglass, Strong plastics, aluminum, etc..
Magnetic circuit system: its function is to produce uniform DC or AC magnetic fields. Dc magnetic circuits are implemented with magnets. The advantage is that the structure is simpler and the interference of the AC magnetic field is relatively high. However, by measuring the liquid electrolyte in the pipeline, the positive electrode is surrounded by negative ions, the negative electrode is surrounded by positive ions, and the electrode phenomenon. And the internal resistance between the two electrodes increases, which seriously affects the normal operation of the instrument. When the diameter of the tube is large, the magnet is also large, large and economical. Therefore, the intelligent electromagnetic flowmeter generally uses an alternating magnetic field and is generated by a 50HZ power supply.
Converter: The sensor potential generated by liquid flow is very weak and is greatly affected by various interference factors. The function of the converter is to amplify the induction potential signal and convert it into a unified standard signal and suppress the main interference signal. Its task is to amplify the inductive potential signal Ex detected by the electrode and convert it into a unified standard DC signal.
Shell: Made of ferromagnetic material, it is the outer shell of the excitation coil of the distribution system and protects the external magnetic field from interference.
Lining: Provide a complete electrical flange lining on the inner and flange sealing surfaces of the measuring tube. It is in direct contact with the measured liquid. Its function is to increase the corrosion resistance of the measuring tube and prevent the sensing potential from being short-circuited by the wall of the metal measuring tube. The lining material has corrosion resistance, high temperature resistance, wear resistant PTFE plastics, ceramics and so on.