The cause and management of vortex flow meter scale error generated

Abstract: the cause and management of vortex flow meter scale error generated information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. The effects of Reynolds number 1) The effects of Reynolds number. By the measuring principle of vortex flowmeters, and figure 4 strouhal number and Reynolds number relation curve we can know, within the scope of the Reynolds number is 2104 ~ 7106, instrument is normal working range. In Reynolds number is 5103 -. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the cause and management of vortex flow meter scale error generated article details. The effects of Reynolds number 1) The effects of Reynolds number. By the measuring principle of vortex flowmeters, and figure 4 strouhal number and Reynolds number relation curve we can know that the Reynolds number is 2 & times; 104 ~ 7报; 106 range, is the instrument to normal working range. The Reynolds number is 5 & times; 103 ~ 2报; 104 scope are within the scope of the instrument work, but because the strouhal number increase, will produce error of measurement, flow coefficient after correction to ensure the flow measurement precision. 2) The influence of Reynolds number correction. There are two kinds of Reynolds number effect correction of the general method. One is in the flow in the second table, suitable for vortex flowmeter measurement system itself has no correction ability. The other is in the vortex flow sensor ( Transmitter) Vortex flowmeter are implemented for correction ability of the measurement system itself. 2 the influence of the fluid temperature change 1) The influence of the fluid temperature change. The measuring principle of vortex flowmeters with type ( 3) We can see that vortex street flowmeter flow coefficient K is affected by the fluid temperature is composed of two parts: a. Caused by body width d changes; b。 Caused by pipe diameter D change. From the type, 1) Showed that f is inversely proportional to the d, K is inversely proportional to the D2, due to the fluid temperature and used in the actual design is different on the fluid temperature, the error is introduced. 2) Influence of correction fluid temperature change. Fluid temperature change effect correction method is calculated according to actual temperature of the fluid to flow coefficient. 3 1) body incident flow surface accumulation effect Happened incident flow body surface accumulation effect. In the current body if there is a sticky particles or with more fibrous material, will be gradually accumulation on the incident flow vortex occurred body, make its geometry and size changes, thus flow coefficient also corresponding change, produce the error. 2) Incident flow surface accumulation body processing. In body to meet the impact of flow surface accumulation are not good correction methods. If necessary, can be replaced periodically body solution. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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