The meaning of large diameter orifice meter scale on-line calibration

Abstract: the significance of large diameter orifice meter scale online calibration information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Most large diameter orifice meter installed in the water supply mains, makes it difficult to get water supply, remove the orifice meter due to the inconvenience, and most of the installation cannot even remove inside the underground instrument well, but they were more is one of the important parameters, accounting waterworks production inspection. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the meaning of large diameter orifice meter scale online calibration article details. Most large diameter orifice meter installed in the water supply mains, makes it difficult to get water supply, remove the orifice meter due to the inconvenience, and most of the installation cannot even remove inside the underground instrument well, but they were more is one of the important parameters, accounting waterworks production verification or calibration problem is particularly important. As we all know, what would happen to flowmeter using effect and orifice flow meter itself, not only is related to the installation environment and use conditions, the inspection can only solve the problems of the orifice meter itself, only online verification or calibration can solve this problem, so the large diameter orifice meter is very important online verification or calibration. 1. Cannot solve most in use orifice flowmeter were makes difficult problem of large diameter orifice flowmeter is a problem to be solved, especially on the problems reflected in the orifice flowmeter, however, large diameter pipeline by up to 70% of orifice meter above, in the water rise year by year, refinement of accounting step by step today, no doubt make the orifice flowmeter in the spotlight, also make the measuring staff under the great pressure, we all hope of large diameter orifice flow meter calibration online can get an early settlement of the problem. 2. Eliminate the installation and use conditions are not ideal additional error caused by the large diameter orifice meter to realize accurate measure of value must have two necessary conditions: one is the accuracy of orifice flowmeter itself and reliability is better; Second, orifice meter installation environment must meet the specification requirements. The current actual situation is: to high demand for the accuracy of orifice flowmeter, considering the reliability, attention to the installation and use conditions worse, often pay big money to buy the high accuracy of the flowmeter, installation and use conditions due to ignoring the flowmeter may have bad influence on the accuracy of actual use effect is very poor, many people even doubt of orifice meter itself. But this problem only by orifice meter will be removed inspection is unable to solve, must through the field calibration to eliminate the installation and use additional error caused by conditions are not ideal. According to our grasp of the situation, in the use of large diameter orifice meter installation and use conditions are not ideal accounted for more than 60%, most of which caused by installation and use conditions are not ideal of additional error value is likely to be greater than the accuracy of orifice meter itself. 3. Flowmeter installation environment and conditions of use of the complexity of the impact on the flow meter at present large diameter orifice meter is common on the installation environment and conditions of use two problems, one is derivative instrument before and after the operation instruction given zui low requirement of the straight pipe, install the orifice flowmeter in flow field of the influence of resistance before and after a not region; Second, design capabilities do not tally with the actual flow, big small pipe flow often happen. Large diameter of orifice meter installation conditions clearly, it is difficult to use one or two data example: after a valve installation has an orifice meter, the impact of the changes likely to have: different types of valves, valve opening of different, different flow point, etc. The combination of a number of conditions. Therefore shall ensure that where possible to straight pipe before and after the orifice flowmeter as long as possible, don't give the instructions simple reference data for the so-called golden rule. Large diameter orifice meter used in the water supply industry are almost differential pressure flowmeter, the principle is based on flow field under the condition of ideal point or line velocity as a function of surface velocity, flow instability or flow rate is too low will make the accuracy of the measurement. 4. Measurement uncertainty analysis of large diameter orifice meter on-line calibration of flow measurement uncertainty analysis how to do it is a problem we all care about, the international standards and national regulations require calibration reports for the uncertainty of measurement result is given. Recent national metrology institute experts working in the field of flow measurement has compiled book flow measurement uncertainty analysis, it as a stable cross textbooks of national metrology technical regulations of debate is the present domestic the orifice plate flow measurement industry guidance for uncertainty evaluation of a book, the book on the flow characteristics of the actual, practical. Various flow standard device and all kinds of flowmeter, it has involved, is a rare traffic industry a good reference book. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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