| 天津壓力開關和壓力變送器，孔板流量計的優缺點有哪些？ |
| 信息來源： 流量變送器制造 | 2019-05-22 點擊量： 4345 |
孔板流量計的優缺點有哪些？西安華恒儀表介紹：孔板流量計按國標規定進行設計、制造和檢定的標準孔板無需實流標定，精度高、結構簡單、制造成本低，但壓力損失在所有標準節流裝置中最大，不適用于要求壓力損失小的情況，標準孔板廣泛用于石油、化工、冶金、電力等行業。
What are the advantages and disadvantages of orifice flowmeter?The orifice plate flowmeter designed, manufactured and calibrated according to the national standard does not need real-flow calibration. It has high accuracy, simple structure and low manufacturing cost. However, the pressure loss is the largest in all standard throttling devices, and it is not suitable for situations requiring low pressure loss. The standard orifice plate is widely used in petroleum, chemical, metallurgical, power and other industries.
標準孔板流量計測量的流量準確性并不比其它流量計高;
The accuracy of flow rate measured by standard orifice flowmeter is not higher than that of other flowmeters.
很多流量計的精度，并不是根據實際流量標定的，而是通過對設計過程和產品的機械制造精度間接判定的。
The accuracy of many flowmeters is not calibrated according to the actual flow, but indirectly determined by the design process and the mechanical manufacturing accuracy of products.
標準孔板應用歷史悠久，從設計、制造、檢驗、使用等方面有一套國際公認的標準規范，在國際貿易計量推薦用表中有一席之地。這可能是有人認為它比其它流量計更準的原因吧。
Standard orifice plate has a long history of application. It has a set of internationally recognized standards and norms in design, manufacture, inspection and use. It has a place in the recommended tables of international trade measurement. This may be the reason why some people think it is more accurate than other flowmeters.
實際上有不少精度遠高于孔板的流量計，因為應用場合以及應用時間較短而沒有進入國際計量組織的“法眼”，這并不說明它們不如孔板。
In fact, there are many flowmeters with much higher accuracy than orifice plates, because they have not entered the "eyes" of the International Metrology Organization because of their short application occasions and time, which does not mean that they are inferior to orifice plates.
不過標準孔板確實是一款表現優秀的流量測量工具。
However, the standard orifice plate is indeed an excellent flow measurement tool.
PS：天津壓力開關和壓力變送器，孔板流量計的優缺點有哪些？
PS: What are the advantages and disadvantages of Tianjin pressure switch and pressure transmitter and orifice flowmeter?
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