Electromagnetic flow meter scale show the cause of the negative and processing as well as the selection of electrode

Abstract: the electromagnetic flow meter scale show the cause of the negative and handling and electrode selection information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Electromagnetic flowmeter is widely applied in the flow of conducting liquid medium, by jiangsu golden lake below brief introduction of the electromagnetic flowmeter dahua instrument and meter plant technical staff during the installation or operation, if the traffic showed negative reasons and treatment methods. The electromagnetic flowmeter flow. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the electromagnetic flow meter scale show the cause of the negative and handling, and the article details in the selection of electrode. Electromagnetic flowmeter is widely applied in the flow of conducting liquid medium, the following brief introduction of the electromagnetic flowmeter by golden lake dahua instrument and meter plant technicians during installation or operation, if the traffic showed negative reasons and treatment methods. Electromagnetic flowmeter flow shows negative may have the following several reasons: 1, didn't mark by flow sensor installation, measured in the opposite direction. Methods: to install. 2, the sensor signal lines, because the electromagnetic flowmeter has positive and negative direction of the flow measurement functions, shows the reverse flow. Methods: will signal exchange. 3, measuring pipe hollow tubes or not tube, there is a gas. The meter will show a negative number or flow value, big and small. Methods: full of measured medium, make the pipe flow meter for measuring. Electromagnetic flowmeter and the selection of fluid material contact parts: electromagnetic flowmeter sensor parts in contact with the fluid has a lining ( Or measuring insulation materials) , grounding electrode, ring and sealing gaskets, its material corrosion material type, abrasion resistance and temperature limit affects its adaptability to fluid. Due to fewer components, simple shape, material selection, flexible electromagnetic flow sensor for strong adaptability of the fluid. Electromagnetic flowmeter lining material ( Or direct contact with the medium of the measuring tube) Commonly used electromagnetic flowmeter lining material with fluorine plastic, polyurethane rubber, neoprene, ceramic and so on. Fluorine plastic including ptfe ( F - 4) Perfluorinated ethylene-propylene ( Tetrafluoroethylene and hexafluoropropylene copolymer, F - 46. Foreign trade name TeflonFEP, xi said FEP) , tetrafluoroethylene and ethylene copolymer ( F - 40) And perfluorinated alkyl vinyl ether copolymer ( Modified ptfe, foreign trade name TeflonFEP) Glass fiber reinforced plastic is used as the lining, also has made the measuring tube alone. This year has adopted high purity alumina ( 99. 7%A12O3） Ceramic made David li Chen, but only the small and medium caliber sensors. Neoprene and FRP used in non corrosive or weak corrosive liquid, such as industrial water, if FeiWuShui and acid and alkali, low price zui. Fluorine plastic has good resistance to chemical corrosion turbid liquid, but wearability is poor, cannot be used to measure the ore slurry. Zui early references in fluorine plastic is teflon, with electromagnetic flowmeter measurement alone between pipe pressure, no cohesive force, cannot be used for negative pressure pipeline, after the development of various modified varieties, injection molding, with the measuring tube has strong binding force, can be used in the negative pressure. Electromagnetic flowmeter material name ( For short or acquisition are shown in brackets) Polyurethane rubber has excellent abrasion resistance, resistance to acid and alkali corrosion resistance is poor. Its wearability is equivalent to 10 times higher than the natural rubber, suitable for coal slurry, pulp, etc. ; Medium temperature is lower than 40 ~ 60/70 ℃. Alumina ceramic has excellent abrasion resistance and corrosion resistance of strong acid and alkali, wear resistance about 10 times of polyurethane rubber, is suitable for the corrosive slurry; But brittle, installing a clamping negligence fragile and can be used for high temperature ( 120～140/180℃） , but to prevent the temperature change, such as steam sterilization, general mutation is not greater than 100 ℃ temperature, temperature of 150 ℃ for 10 min time. 2) Electromagnetic flowmeter and grounding electrode ring electrode materials for the measured medium corrosion is to choose the material first consider factors, then consider whether will produce and the surface passivation effect and formed by the noise. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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