Abstract: analyses the flow of metal tube float meter scale conversion information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Metal pipe flow meter by the ontology of vertebral canal and watchcase pointer indicator, in addition to the on-site instructions instantaneous flow, but also far transfer out 4 ~ 20 ma DC electrical signal, the overall adopts modular design, can increase rapidly in field on the lower limit switch, flow accumulation function, all the work. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the flow of metal tube float meter scale conversion is analysed for details. Metal pipe flow meter by the ontology of vertebral canal and watchcase pointer indicator, in addition to the on-site instructions instantaneous flow, but also far transfer out 4 ~ 20 ma DC electrical signal, the overall adopts modular design, can increase rapidly in field on the lower limit switch, flow accumulation function, each function unit board for instrumentation structure, has the characteristics of the replacement parts is simple, convenient, accurate positioning. Why do we need to implement a flow conversion? We are in the process of production, the calibration of metal tube float flowmeter is water or air to float flowmeter calibration. Due to the medium state and the calibration of the practical application, according to the principle of measurement, represented by a float in the same position in the measuring tube flow value and calibration is different, if you want to correct selection of the specifications of the flowmeter, field use instrument, to know the flow conversion relations between them. Additional flow meter industry standard its precision is relative to the full range, so a user use, the common traffic should reach more than 60% ~ 80% of full scale is relatively reasonable, if use below 50% relative error will increase, precision is affected, if flow rate is in excess of full scale to measure, so only the correct flow conversion can choose the suitable instrument. Metal tube flow meter conversion on the basis of conversion on the basis of basically has two: the theory calculation formula of flow meter and the ideal gas state equation. ( A) Is the theory calculation formula of flow meter, 2) Is the ideal gas state equation. The calculating formula of flow meter ( 1) Type: Q— — Volume flow a— — Flow coefficient Fk— — Float zui large diameter with highly taper pipe cross section area of ring gap between g— — Acceleration of gravity Vf— — The volume of a float & rho; f— — The density of float & rho; — — By measurement of body density A— — Float zui large cross-sectional area ( Type of the unit is cm, g, s) The ideal gas equation of state ( 2) Type: P0, P1 & ndash; — Under the two states of absolute pressure T0, T1 & ndash; — Under the two states of absolute temperature where V0, V1 & ndash; — Under the two states of the volume from the ideal gas state equation can deduce the following two relations: a flow relationship ( 3) B density relationship ( 4) Type: M— — The quality of medium & rho; — — The medium density Q— — Medium flow and flow meter industry standards: its precision is relative to the full range, so the user is in when using, its flow is commonly used in reaches more than 60% ~ 80% of full scale is reasonable, if used in the full range of below 50% relative error will increase, changes in plants could also affect accuracy, if flow rate is more than the full range, is unable to properly measured, so only right for flow conversion can choose the suitable instrument. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.
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