指出了孔板流量计在使用中存在的问题；
Some problems of the orifice flowmeter in use is pointed out.
孔板流量计是测量气体流量最常用的方法。
The most commonly used method for measurement of gas is the orifice meter.
传统孔板流量计测量精度较低，功耗较高。
Traditional orifice plate flowmeter had some demerits such as low measuring precision and high power dissipation.
目前，孔板流量计仍是最主要的天然气流量计。
在工业上广泛使用孔板流量计测量气体体积流量。
It has been widely accepted by the industry for measuring gas volumes.
天然气计量现在仍以差压式流量计中的孔板流量计为主。
The metering of natural gas still presently depends on orifice flowmeter, one of differential pressure flowmeters.
孔板流量计常用于工业生产测量气体、液体和蒸汽流量。
At present it was widely applied to measure the flux of gas, liquid and steam.
分析了可逆式孔板流量计和可变式孔板流量计的设计原理和实验结果。
The design element and the experiment result of reversible orifices and changing orifices low velocity flow is high.
与孔板流量计相比，具有结构简单，安装、维护方便，测量范围宽等特点。
Comparing with orifice flowmeter, it features simple structure, ease installation and maintenance as well as wide range.
本文主要分析了ZKL智能孔板流量计测量流量时影响测量精度的主要因素。
An analysis is made in the paper of the factors affecting the accuracy of the ZKL intelligent orifice plate flowmeter in flow measurement.
阐述了孔板流量计的流量测量原理以及理论流量计算公式、标准孔板的结构形式和技术要求。
Then, its measurement principle and theoretical formula, as well as the structural style and technical requirements of standard orifice were expounded.
用该方法设计的线性化器具有一定的通用性，可以构成热电偶、热电阻温度计以及孔板流量计。
The linearization apparatus designed by this method is in common use. It can be used in thermocouple and resistance thermometers as well as flowmeters by means of orifice plates.
综合分析了影响孔板流量计计量精度的主要因素，提出了提高孔板流量计计量精度的有效措施。
Comprehensively analyzed are the main factors that affect the measuring accuracy of the orifice flowmeter. Proposed are some effective measures to improve its measuring accuracy.
实验结果表明槽式孔板测量误差小于5%，研究结果对槽式孔板流量计的开发具有一定借鉴意义。
Experimental results indicated that maximum error of slotted orifice is less than 5%. The conclusion is available to the development of slotted orifice meter.
建立了由锅炉、换热器、孔板流量计、水泵、微压计、温度计等仪器设备组成的封闭式冷却塔实验台。
Bench of closed circuit cooling tower that is composed of boiler, exchanger, orifice flowmeter, water pump, micromanometer, heat indicator and so on is established.
通过实验研究，观察分析了流量测量管路中空间弯头下游有(或无)整流器时对孔板流量计流量系数的影响。
The flow coefficients of the orifice-plate flowmeters are experimentally studied with or without a rectifier at the lower reach of a space elbow in the measuring pipe of flow.
可行时，液体物料应该用经过正确校验的立管来检测储罐或用孔板流量计、转子流量计或容积式流量计来测量；
Wherever practical the measurement of liquid streams shall be by standing gauges of properly calibrated tanks or by orifice meters, rotameters or displacement meters.
阐述了孔板流量计存在的局限性，介绍了新型V型锥流量计的原理和设计特点，并以实际工程设计为例，说明了使用该流量计的优点。
The limitation of orifice plate is clarified in this paper, and the principle and design features of V-CONE are introduced. An actual application example is shown to illuminate advantages of V-CONE.
橡胶杯膜电远传流量计，是配合节流元件（孔板）用来检测液体，气体和蒸汽的流量，并能自动显示和累积的仪表。
This flowmeter is a meter with automatic display and accumulation used for examining and measuring the flow of liquids, gases and steam with the aid of a throttle.
介绍了孔板、涡街流量计测量不同流体时引起的能耗量的计算方法，举例说明了能耗量的大小。
The paper introduces calculating method of energy consumpation caused by flowmeters, such as orifice flow meter, vortex flow meter, and illustrates magnitude of energy consumpation with examples.
并应用音速喷咀对涡轮流量计、腰轮流量计和密度补偿式孔板气体质量流量计进行标定。
The sonic nozzle is used to calibrate turbine flowmeters, Roots flowmeters, and density compensated orifice gas mass flowmeters.
并应用音速喷咀对涡轮流量计、腰轮流量计和密度补偿式孔板气体质量流量计进行标定。
The sonic nozzle is used to calibrate turbine flowmeters, Roots flowmeters, and density compensated orifice gas mass flowmeters.
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