For a wide variety of flowmeter scale actual measurement error analysis

Abstract: the reasons of the flow meter scale actual measurement error analysis information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Flow meter in use process, often from the early stage of the flowmeter measurement or other parameters of the flow measurement, judge whether the flowmeter measurement precision, but the flow meter calibration on flow standard devices, with a few set meter instrument itself. More flow meter manufacturers choose model price quote you are welcome to inquire, here are a variety of actual measurement meter scale details of the cause analysis of the great error in the article. Flow meter in use process, often from the early stage of the flowmeter measurement or other parameters of the flow measurement, judge whether the flowmeter measurement precision, but the flow meter calibration on flow standard devices, with a few set meter instrument itself ( Such as debugging setting fault) Outside, the scene actual prove most flow meter are normal work. Investigate its measuring error factors generally most belong to improper flowmeter equipment placement and piping within the medium mixed with heterogeneous ( If there is condensed liquid droplets in the gas and liquid in bubble) The composition of aspects such as error. * class flowmeter improper operation and improper placement of bad equipment, see more of: standard orifice of the acute Angle is not welcomed in flow. 2) Sealing gasket between appearance and pipeline diameter Dg that are smaller than the pipe inner diameter Dp and appearance Dm onset beams. Dg should be slightly bigger than the Dm, such as Dg3) Sealing gasket off base misalignment. Sealing gasket equipments, covered some circulation area, make the velocity spread serious distortion asymmetry. As asymmetric attacks in flow sensor import, the length of straight pipe upstream is zero, the differential pressure type, turbine, and vortex street type, ultrasonic type, target type, such as electromagnetic appearance with measurement error. Electromagnetic flowmeter DN50mm liner from 10 mm, for example, the measurement error is as high as 4% ~ 10%. 4) The meter is in the wrong direction of flow. 5) Equipment will be sensitive about the vibration trouble of flowmeter in oscillation of the line. 6) Shortage of necessary protective accessories. These shortcomings, it is well known or appearance factory should prevent were put forward. But due to the operator without strict training, lack of common sense and did not pay more attention to, such errors emerge in endlessly. Sealing gasket inside diameter is too small or equipment off while the volumetric appearance such as type, float type, coriolis mass flow rate value has no effect or little effect, but will add pressure loss. The second type flowmeter upstream disturbance source: upstream disturbance source spiral weld pipe and all kinds of choke pipe fittings ( Such as elbow, reducer, pipe and valve) 。 By disturbance flow type is divided into two categories, category 1 speed spread with distortion and secondary activities; 2 class except the velocity spread the distortion and the second activity, and vortex. All kinds of pipe fittings in zui is bent pipe and all kinds of pipe bending combination ( Like a plane double bend and solid double bend) 。 All kinds of traffic appearance of upstream activity disturbance sensitive degree of indeterminacy of dispute, therefore to request their own equipment. Disturbance flow type classification based on appearance of all kinds of pipe fittings in all kinds of traffic, save to save the pieces of the low differential pressure type appearance straight pipe length request experiments done zui to perfect, typical choke a comparative sophisticated achievement has been made in the international standard ISO5167 rules. Other kinds of flow appearance has not reached such a sophisticated level; Whether it's standard specification is still factory using manual supply data, are not as good as saving differential pressure type flow looks perfect, sometimes can only refer to the role. Common flow meter display: the above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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