The use of the vortex flow meter scale and maintenance

Abstract: the use of vortex flow meter scale and maintenance information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. The working principle of vortex flowmeter are 1 belong to the speed of flowmeter, vortex flowmeter is made of the body and vortex frequency detector of transducer, signal converters. Its measuring principle is in the flow of fluid, if to place a vertical flow. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the use of vortex flow meter scale and maintain article details. The working principle of vortex flowmeter are 1 belong to the speed of flowmeter, vortex flowmeter is made of the body and vortex frequency detector of transducer, signal converters. Its measuring principle is in the flow of fluid, if vertical flow to place a vortex in body, within a certain Reynolds number, on either side of the back of the body in vortex caused regular vortex ( See figure 1) Vortex column in spiral body downstream, asymmetric is arranged. Figure 1 spiral body and set vortex frequency of vortex is f, the average flow velocity v of measured medium, vortex happens right against the face width is d, unilateral vortex frequency f and the velocity v and d try to have the following relationship between the Sr is a function of Reynolds number, ReD = 2 & times; 104 ~ 7报; 106 range, Sr can be regarded as constant, vortex street frequency and volume flow rate is proportional to the relationship. Vortex flowmeter can measure a single state of liquid, gas, and steam flow, in the state of miscible fluid, flow meter is can't make a precise measurement. Vortex street flowmeter has a shape and size. 2 vortex flowmeter installation according to the vortex flowmeter sensors can be divided into flange, clamping type, insert type. Priority model selection of the flange, followed by clamping type, plug-in into consideration. The reason was that the clamping type and insertion type flowmeter accuracy is greatly influenced by the installation, non-standard installation will produce very big measurement error. Vortex flow meter installed with the arrow on the nameplate to make sure the sensors are consistent with the direction of flow and must meet the requirements of below the zui small straight pipe before and after. At the same time to comply with the following requirements. 2. 1 the installation of measuring gas or steam flowmeter measuring gas or steam, the vortex street flowmeter installation in horizontal pipe runs with the piping should pay attention to prevent water retention, vortex street flowmeter should be installed in the pipeline is high or containing section of vortex flowmeter are raised. Flow vortex flow meter installed in vertical pipe runs, there is no limit, if measured gas containing a small amount of liquid, gas flow should be from the bottom up, as shown in figure 2. Figure 2 measuring gas or steam vortex street flowmeter installation diagram 2. 2 when the installation of the liquid flowmeter measurement liquid in order to ensure the measurement precision, vortex street flowmeter tube must be filled with liquid. Vortex flow meter installed in a horizontal pipe, the downstream section of pipeline should be higher than that of vortex flowmeters, to keep the tube; When the fluid flows downward, downstream section of pipeline should be higher than that of vortex flowmeters, to maintain full package. Flow meter installed in vertical pipe runs, the fluid should be upward mobility, when the fluid flows downward, the downstream section of pipeline should be higher than that of vortex flowmeters, to maintain full package, as shown in figure 3. Figure 3 measuring liquid vortex street flowmeter installation diagram 2. The position relationship between 3 meter and control valve control valve should be installed downstream of the vortex flowmeter, which can solve the fluid flow control valve, due to the pressure drop and produce the bad influence of bubbles, as shown in figure 4. Vortex flow meter installed in horizontal pipe, when measured medium temperature greater than 200 ℃, the transmitter must header downward installation. Figure 4 above the location of the vortex flow meter and control valve is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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