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In the process of industrial oxygen supply, the oxygen delivery pipeline must be equipped with a corresponding flow measurement system. Due to the need to economically calculate and collect fees, the measurement accuracy of oxygen flow has attracted more and more attention.
In the past, most orifice plates were used to measure oxygen flow, and an appropriate intelligent flow meter was used to automatically compensate for errors caused by oxygen pressure and temperature changes to improve the measurement accuracy. The orifice plate has a simple structure and is widely adaptable to fluids and has been standardized. However, in practical applications, it sometimes results in errors that are difficult to estimate. The key is to detect a part at one time.
As we all know, the traditional orifice plate throttling device has the disadvantage that it is difficult to overcome: the range ratio is too small, usually only 3:1, so that the large flow can not be taken into account, the small flow rate is often not measured, resulting in a large error in the cumulative flow value; Secondly, the orifice plate throttling device has a large pressure loss, which is not conducive to energy saving, and has a large amount of construction and high installation costs.
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