Gas metal pipe flow meter scale display error evaluation steps

Abstract: the gas tube flow meter scale display error evaluation steps of the information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Metal pipe flow meter is based on the float position measuring a variable area flow meter, it has the structure is simple, intuitive, small pressure loss, easy maintenance, etc. Gas metal flow meter is a kind of commonly used industrial and laboratory zui flowmeter, over. More flow meter manufacturers choose model price quote you are welcome to inquire, here is a gas tube flow meter scale display error evaluation steps of the article details. Metal pipe flow meter is based on the float position measuring a variable area flow meter, it has the structure is simple, intuitive, small pressure loss, easy maintenance, etc. Gas metal flow meter is a kind of commonly used industrial and laboratory zui flowmeter, jjg257 - with the new procedures 2011 the promulgation of 'metal pipe float flowmeter, implementation and more and more steel and chemical enterprises to inspection of gas metal flow meter, my company consider it necessary to separate the metal gas float flowmeter measurement error of error evaluation. Specific steps are as follows: first, metal tube flow meter measurement basis: on the basis of verification regulation jjg257 - 2011 'metal pipe flow meter. According to provisions of verification regulation of gas metal flow meter calibration of error in the sonic nozzle gas flow standard device with a standard table method. Second, the metal flow meter environmental conditions: temperature requirements: ( 5 ~ 35) ℃; Relative humidity of atmosphere humidity requirements: ( 45% ~ 75%) rh; (atmospheric pressure requirements 86 ~ 106) kpa。 3 and metal pipe float flowmeter measurement standards: sonic nozzle gas flow standard device, scope of work DN ( 15-200) Mm. The sound ( Speed nozzle gas flow standard device mainly include water ring vacuum pump, buffer tank, calibration, sonic nozzle, timing counter, upper machine and so on. ） Four, metal tube flow meter measured object: gas tube flow meter, accuracy degree of 2. Level 5. Five, the metal flow meter measurement process: in the regulation of environmental conditions, jjg257 - 2011 the metal tube float flowmeter calibration, with air as medium, measured by the standard table method. Will be check meter measured flow QVS and standard flow device in which the measured standard volume flow qn, to calculate its value error of ei = ( qv - qn) / qmax× 100%. Sixth, the use of metal tube float flowmeter evaluation results: under the condition of the accords with afore-mentioned conditions, for & phi; 25 mm gas metal rotameter, measurement range, 2. 5 ~ 25) M3 / h, general can directly use the uncertainty of evaluation results; For other flow meter, according to the type of flow meter and measuring range, can adopt the evaluation methods of uncertainty present the corresponding evaluation results. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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