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    1. 天津压力开关和压力变送器,孔板流量计的优缺点有哪些?
      信息来源: 华恒 | [ 2019-05-22] 点击量: 166

           孔板流量计的优缺点有哪些?西安华恒仪表介绍:孔板流量计按国标规定进行设计、制造和检定的标准孔板无需实流标定,精度高、结构简单、制造成本低,但压力损失在所有标准节流装置中最大,不适用于要求压力损失小的情况,标准孔板广泛用于石油、化工、冶金、电力等行业。

          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.
       
          标准孔板流量计测量的流量准确性并不比其它流量计高;
          The accuracy of flow rate measured by standard orifice flowmeter is not higher than that of other flowmeters.
       
          很多流量计的精度,并不是根据实际流量标定的,而是通过对设计过程和产品的机械制造精度间接判定的。
          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.
       
          标准孔板应用历史悠久,从设计、制造、检验、使用等方面有一套国际公认的标准规范,在国际贸易计量推荐用表中有一席之地。这可能是有人认为它比其它流量计更准的原因吧。
          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.
       
          实际上有不少精度远高于孔板的流量计,因为应用场合以及应用时间较短而没有进入国际计量组织的“法眼”,这并不说明它们不如孔板。
          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.
       
          不过标准孔板确实是一款表现优秀的流量测量工具。
          However, the standard orifice plate is indeed an excellent flow measurement tool.
       
      PS:天津压力开关和压力变送器,孔板流量计的优缺点有哪些?
      PS: What are the advantages and disadvantages of Tianjin pressure switch and pressure transmitter and orifice flowmeter?