Analytical signal distortion in the differential pressure flow meter scale and introduce errors

Abstract: the analytical scale of differential pressure flowmeter signal distortion and the introduction of error information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Changzhou into feng factory for 30 years, has been in the study, has been in progress, learning advanced foreign instrumentation equipment and technology, the introduction of advanced technology, and then on the basis of the research and development of their new technology, combined with the requirements of customers, innovative products, meet customer requirements. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the analytical scale of differential pressure flowmeter signal distortion and the error introduced by the article details. Factory for 30 years, has been learning, has been in progress, learning advanced foreign instrumentation equipment and technology, the introduction of advanced technology, and then based on the research and development of new technology, combined with the requirements of customers innovative products that meet customer needs, meet the requirements of customers, the pursuit of perfect quality, technical breakthroughs. In the standard of differential pressure flowmeter, the guide of laying pipe installation and instrumentation generally simply referred to by the way, that there should be no transmission distortion of the differential pressure signal. In fact to really do not distortion of differential pressure signal transmission is very not easy. Has been: just stop the device, or conditional will be equipped with a differential pressure type flowmeter device on the pipeline of the valve is closed, and confirmed through the flowmeter flow rate has dropped to zero, from the point of specific flow meter readings, really zero value is not much. Zero drift of the most main reason for the distortion in the process of differential pressure transmission. The differential signal transmission distortion makes the differential pressure transmitter receives pour on differential pressure signals and throttling device produced by the differential pressure signal is not equal, causing additional error. The differential signal distortion including steady-state value distortion and dynamic distortion. Under the condition of steady flow distortion exists only steady-state value, under the condition of the pulsating flow, there may be a steady-state value distortion and there will be a dynamic distortion. This section mainly discuss the steady state value distortion. The region and the reasons of steady-state value distortion may cause lead to pressure pipe is not reasonable, the cut-off valve Settings, highly unequal condenser, spacer liquid level height is not equal, slope led pressure tubes was unreasonable, the tube medium density are not equal, three valve group effusion, etc. 1. Spacer liquid level height is not equal to the error due to lead with isolator in pressure pipeline in order to use spacer with differential pressure transmitter isolation resistance to corrosion medium. Spacer just filling, through three balancing valve can make the two isolation valves of the spacer liquid level height in the container are equal, but to run after a period of time due to the isolation liquid leakage or driving balance valve at run time, cause the spacer liquid level height is not equal, to introduce additional differential pressure. 2. Guide pressure tube to unreasonable and cut-off valve setting the error due to improper velocity-equalizing tube differential pressure flow meter used to measure may precipitate condensate gas flow of low pressure, the level set of needle type cut-off valve may lead to blockages in condensate to accumulate in the valve of gas path. 3. Condenser height caused by unequal error are two negative pressure pipe condenser structure should be symmetrical, installation height should be equal, which can potentially make two condenser in liquid level height are equal, because the level of a difference of 1 mm will be the introduction of 10 pa differential pressure distortion. But in the use of the site not only two condenser installation height of unequal situation often see it, and some even condenser inversion, didn't have the effect of condenser. Plus or minus of elbow flowmeter with an open mouth in the bend in the outer ring, another open in bend pipe inner circle, in a larger diameter, it is easy to cause highly unequal, due to the differential pressure signal of elbow flowmeter is original is very small, so the differential signal distortion from absolute numerical differential pressure is not too big, but the relative error caused by the flow measurement is considerable. 4. Three valve group may be introduced by the transmission distortion of valve group size is very small, in dry gas, steam and liquid measurement, generally do not have a big problem, but in low voltage measurements may precipitate condensate gas, often because of a drop of condensate blocking three valve group in the flow in the horizontal, cause a large error. Simple ways to solve this problem is to change the direction of the installation of the differential pressure transmitter, three valve flow from horizontal to vertical, and will be installed on high differential pressure transmitter. 5. Lead pressure pipeline transmission distortion caused by guarantee reasonable slope pressure pipeline is in order to make the tube may occur rapidly rises in the gas collector or mother tube, the tube possible condensate rapidly sinking to the settler, the drain valve or mother tube. The development of instrument and meter industry, instrument and meter industry technical breakthroughs cannot leave the instrument manufacturer's support and effort. Flow meter company as flow meter manufacturer, we study hard for the people of new technology, the introduction of advanced equipment, research and development more technology, meet the needs of more customers. Also has been gradually put into feng flowmeter products sold to foreign countries, widely popular among customers. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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