能源计量是关于制药企业节能降耗降成本的重要环节,一般采用孔板流量计进行流体计量。介绍了孔板流量计的工作原理、影响流量计精度的因素等,提出尽管孔板流量计精度较低、维护繁琐,但随着电子技术的发展及新标准的实施,使其使用性能得到了改善,故其仍将在流量计量中占居重要位置。 Energy metering is an important part of the pharmaceutical companies to reduce costs of energy saving, generally using orifice flow meter for fluid measurement. This paper introduces the working principle of the orifice flowmeter and the factors affecting the accuracy of the flowmeter. It is pointed out that despite the low accuracy and maintenance of the orifice flowmeter, with the development of electronic technology and the implementation of new standards, Improve, so it will still occupy an important position in the flow measurement.