Notice in the application of electromagnetic flow meter scale 17 points

Abstract: the application of electromagnetic flow meter scale 17 points that should pay attention to the information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Electromagnetic flowmeter 17 points need to pay attention to in the application of electromagnetic flowmeter in the petrochemical, chemical, electric power, metallurgy, municipal, pharmaceutical and other industries, the flow measurement technology difficulty and complexity are high, the flow measurement for improving product quality and lower prices. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the application of electromagnetic flow meter scale article 17 points that should pay attention to details. Electromagnetic flowmeter 17 points need to pay attention to in the application of electromagnetic flowmeter in the petrochemical, chemical, electric power, metallurgy, municipal, pharmaceutical and other industries, the flow measurement technology difficulty and complexity are high, the flow measurement for improving product quality, reduce business operating costs, to solve the energy conservation and environmental protection play an important role. Pressure loss of the electromagnetic flowmeter has no resistance, no advantage, can reduce the resistance of the pipe fully, accord with the requirement of saving energy and reducing consumption, and electromagnetic flowmeter are received considerable attention in the industry. But though electromagnetic flowmeter has the advantages, and in terms of reliability and stability are much better than most other types of flow meter, but in the process of actual use, or will happen some problems, the following kaifeng flow meter is listed for you open a electromagnetic flowmeter in engineering applications need to be aware of the point. 1, the electromagnetic flowmeter sensor to choose at any time the location of the measurement can be filled with a liquid intraductal for installation, in order to prevent the result of the measurement of intraductal no liquid illusion caused by pointer is not zero. Had better be vertical installation, reduce the liquid flow through the error caused by bubbles on the electrode. If placed, the flow meter of two electrodes must be kept in the same horizontal plane, in order to prevent sediment or in the air to make it on the top of the pipe insulation. 2, if necessary, can let the empty tube, the built-in atc testing lines, stops and traffic signal output. 3, with the help of anodic protection of flow of fluid in pipe, install electromagnetic flow timing, should follow the following points: in order to allow fluid to good grounding, to use the ring; Sensor connected with pipes, flanges should have insulation pad, also want to invest in use on the screw. 4, when the electromagnetic flowmeter is grounded in the installation of metal pipe road, through the electromagnetic flowmeter sensor on the earthing terminal to realize the potential balance system, namely through the cross-sectional area of not less than 6 was copper wire connected to the earthing terminal; When electromagnetic flow meter installed in the grounding of metal pipe, the two flange through a cross-sectional area for at least six was the copper wire connected to pipe flange, and grounding; The converter or sensor junction box are connected to the earthing terminal, achieve the equilibrium of the system potential, When electromagnetic flow meter installed in plastic pipe or pipe insulation lining, through additional ground loop to realize the potential balance system, grounding ring by cross-sectional area for at least six of copper wire was connected to the earthing terminal. 5, electromagnetic flow meter transducer should be installed in the indoor dry ventilated place, avoid installation where the ambient temperature is too high, should not be affected by a strong vibration, as far as possible to avoid a strong magnetic field equipment, such as motor, transformer, etc. , avoid installed in corrosive gases, installation location convenient for maintenance, this is to ensure the normal operation of the converter of the environmental conditions. 6, in order to ensure that the electromagnetic flow sensor measuring tube full of measured medium, sensors installed vertically, best flow from bottom to top, especially for the liquid-solid two phase flow, must be installed vertically. If only allow level field installation, it must ensure that the two electrodes in the same horizontal plane. 7, electromagnetic flow sensor should be installed on both ends and the bypass valve. 8, electromagnetic flow meter transducer electrode measured by several millivolt ac potential, is based on sensor inside the fluid potential. In order to make the fluid potential stability and keep such as a sensor and fluid potential, to ensure the steady measurement, the sensor should have a good grounding on both ends of the shell and tube, the converter shell can also, grounding resistance is not greater than 10 ohms, and cannot be Shared with other electrical equipment grounding line. If you can't to ensure good contact sensor shell and metal pipe, metal wire connects them, reliable grounding. 9, in order to avoid the interference signal, the signal between sensors and switches must be shielded wire transfer, are not allowed to put the signal cable and power line parallel, within the same cable steel tube length of signal cable in general should not exceed 30 m. 10, sensor installation location should avoid, ac and dc magnetic field and vibration environment temperature for - 20 ~ 50 ℃, and not contain corrosive gas, the relative humidity is not more than 80%. 11, in order to guarantee the normal operation of the electromagnetic flowmeter, reduce the measuring error, electromagnetic flowmeter should meet the requirements of straight pipe before and after. According to JJG 1033 - 2007 verification regulation of electromagnetic flowmeter test standard requirements, usually 10 d, straight pipe should be met before a straight pipe should be after 5 d. 12, installation location. Electromagnetic flow meter can be installed in a vertical, horizontal or vertical installation, but recommended and is the current body is flowing from bottom to top.

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