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(biāo)準(zhǔn)孔板流量計(jì)測量的流量準(zhǔn)確性并不比其它流量計(jì)高;

    The accuracy of flow rate measured by standard orifice flowmeter is not higher than that of other flowmeters.

 

    很多流量計(jì)的精度，并不是根據(jù)實(shí)際流量標(biāo)定的，而是通過對(duì)設(shè)計(jì)過程和產(chǎn)品的機(jī)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(biāo)準(zhǔn)孔板應(yīng)用歷史悠久，從設(shè)計(jì)、制造、檢驗(yàn)、使用等方面有一套國際公認(rèn)的標(biāo)準(zhǔn)規(guī)范，在國際貿(mào)易計(jì)量推薦用表中有一席之地。這可能是有人認(rèn)為它比其它流量計(jì)更準(zhǔn)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(shí)際上有不少精度遠(yuǎn)高于孔板的流量計(jì)，因?yàn)閼?yīng)用場合以及應(yīng)用時(shí)間較短而沒有進(jìn)入國際計(jì)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(biāo)準(zhǔn)孔板確實(shí)是一款表現(xiàn)優(yōu)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(guān)和壓力變送器，孔板流量計(jì)的優(yōu)缺點(diǎn)有哪些？

PS: What are the advantages and disadvantages of Tianjin pressure switch and pressure transmitter and orifice flowmeter?