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Intelligent electromagnetic flowmeter
1) Working temperature and working pressure The maximum working temperature of the electromagnetic flowmeter depends on the temperature of expansion, deformation and qualitative change of the material of the pipeline and the liner. It varies with the specific instrument and is generally lower than 120'C. The maximum working pressure depends on the strength of the pipe, the sealing of the electrode part, and the specification of the flange. It is generally 1.6X105-2.5X105Pa. Since the pipe wall is too thick, the eddy current loss will be increased, so the lateral pipe is made thinner.
2) The conductivity of the fluid under test must have a certain conductivity. The general requirement is that the conductivity is 10-4-10-1s/cm, and the minimum is not less than 505S/cm. Therefore, the smart electromagnetic flowmeter cannot measure the flow of non-conductive fluids such as gas, steam, and petroleum products. For a conductive medium, theoretically speaking, all induced electric potentials are generated when flowing relative to a magnetic field. In fact, the increase in the internal resistance between electrodes is limited by the distributed capacitance of the transmission line, the input impedance of the amplifier, and the measurement accuracy.
3) Flow Velocity and Velocity Distribution Electromagnetic flowmeters are also velocity instruments. The induced potential is proportional to the average flow velocity. This average flow velocity is obtained with the flow velocity at each point symmetrical to the center of the tube. Therefore, when the fluid flows in the pipe, the distribution of the velocity at each point on the cross section has a great influence on the instrument representation value. For the transmitters of circular pipe point electrodes commonly used in the industry, if the flow velocity is disrupted symmetrically with respect to the central axis of the catheter, the electromagnetic flowmeter cannot work normally. Therefore, before and after the electromagnetic flowmeter, there must be sufficient Straight sections to eliminate the effect of various local resistances on the symmetry of the velocity distribution.
Radiator Aluminium Profile Extrusion Dies
At present, aluminum profile radiators are widely used in fields such as automobiles, electronic equipment, lighting equipment, etc.;
The aluminum radiator shell is one of the most important components of the radiator. Its main function is to protect the internal heat dissipation components and strengthen the structure of the entire radiator. Today I will take you to learn about the application of radiators and their shells.
Aluminum profiles are a common material for manufacturing radiator shells. They have the advantages of being lightweight, corrosion-resistant, and easy to maintain. In the processing and manufacturing process, stamping, hot pressing, processing, spraying and other technologies are usually used;
When designing an aluminum radiator shell, engineers usually consider the following aspects: shell size, cooling power, fan configuration, and installation method;
This can provide users with a more efficient, safe and reliable one-stop cooling solution.
Advantages of aluminum alloy radiator
1.Lightweight: Due to the lightweight characteristics of aluminum alloy materials, aluminum alloy radiators are lighter than traditional copper radiators, which can reduce the overall weight of mechanical equipment.
2.Good corrosion resistance: Aluminum alloy radiators have excellent oxidation resistance and anti-corrosion properties, and are not prone to rust or oxidation problems after long-term use.
3.Simple manufacturing process: The manufacturing process of aluminum alloy radiators is relatively simple, the production cost is low, and large quantities of products can be produced more cheaply.
Radiator Aluminium Profile Extrusion Molds,Radiator Aluminium Profile Extrusion Moulds,Radiator Profile Extrusion Dies,Radiator Aluminium Extrusion Dies
Foshan Jieliwei Metal Products Co., Ltd. , https://www.foshanjlw.com