Electromagnetic flow meter scale selection and selection criteria

Abstract: the electromagnetic flow meter scale selection and selection criteria of information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. 1, level meter accuracy within the prescribed flow range, accuracy grade, zui big error should be allowed to meet the provisions of the table 1. Flow meter error said use relative error value. 2, reference error for instantaneous flow indicator flowmeter said also. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the selection and choice of electromagnetic flow meter scale standard article for details. 1, level meter accuracy within the prescribed flow range, accuracy grade, zui big error should be allowed to meet the provisions of the table 1. Flow meter error said use relative error value. 2, reference error for instantaneous flow indicator flowmeter said also can use the reference error, its zui permissible error series should comply with the regulations of table 1, the test result given in the tender document is no longer accurate level, and to use its zui said big margin of error, and should also be tagging FS after zui large margin of error, such as & plusmn; 0. 5%FS。 3, error representation and selection principles in a meter a verification, should be in accordance with the level of accuracy and reference error of a given flow meter error representation; For using a combination of relative error and reference value for said error of the flowmeter, a verification should be uniform in a way said its error. 4, repeatability of flowmeter repeatability shall not exceed the level of accuracy of corresponding provisions zui big 1/3 of the permissible error absolute value. Electromagnetic flowmeter selection guidelines: 1, traffic, to decide how to choose according to zui big flow calibration flow meter. 2, according to the flow and industrial pipe size, determine the calibre of the flowmeter. General choice and pipe flow meter. 3, according to the characteristics of the measured medium, to choose flowmeter lining. Such as temperature, corrosive, whether may have a negative pressure inside the pipeline and so on. General lining with PTFE, soft rubber, hard rubber, PFA, ceramic, and so on. 4, choose according to dielectric properties measuring electrode material. Generally speaking, there are 304, 316, hartz alloy, titanium, tantalum, and so on. 5, according to the process piping stress level choice on both sides of the connection flange pressure level. 6, choose the protection grade, if the whole underwater sensor, need to select IP68. Above, part is the sensor and transmitter part: 1, according to the requirement of the installation position, sure one-piece or split type is selected. 2, need what kind of output, 4 - 20 ma signal, Hart, ProfibusPA, FF, etc. Whether you need 3, explosion-proof requirements. Determine the level of explosion-proof. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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