每个弯管流量计的流量系数须经过实际标定。
The discharge coefficient for each elbow flowmeter should be calibrated in practice.
本文介绍一种流量计标定控制系统，文中详细介绍了其工作原理及控制系统的软硬件结构。
This paper presents a flowmeter calibration control system and goes into details on the working principle and configuration of its software and hardware.
介绍了多相流量计的特点、原理、种类、标定及测量技术。
The paper introduces the characteristics, the principle, the categories, the calibrating and measuring technique of the multiphase flowmeter.
文章通过理论推导、计算数据及实验数据对转子流量计流量计算理论及刻度标定进行探讨。
A theoretical calculation on the flow in the rotameter and its calibration were studied both theoretically and experimentally.
在油气水三相水平管流的试验研究中，为便于流量计的在线标定，设计了一种更精确的流量自动调节系统。
In the test and research of oil gas water horizontal pipeline flow, for the convenience of online scaling of flowmeters, a more precise flow autocontrol system is designed.
介绍了文丘里皮托管流量计的原理、结构和测量水流量公式，以及采用流量法利用现场条件对文丘里皮托管流量计进行简易标定。
The principle, structure and water flow measuring formula of Venturi Pitot tube flowmeter are introduced. The simple calibration with flow method adopting field condition is also presented.
本发明还提供了一种干法进料和反应的系统以及一种固体质量流量计的标定方法。
The invention also provides a dry feed and reaction system and a method for calibrating the solid mass flow meter.
本文叙述了用音速喷嘴在线标定差压式天然气流量计。
This article describes on line proving of natural gas flow meters by using sound speed nozzles.
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.
以往常采用明渠流量计测回流污泥量，不仅误差大，而且流量系数转换、标定都十分困难。
Traditionally the flowrate of returning activated sludge was measured by open channel flowrate meter with higher error, difficult transform of flowrate coefficients and inconvenient calibration.
设计了一套热式流量计的标定试验台，用标准流量计法，对热式流量计进行标定。
In order to calibrate the thermal mass air flow meter by the method of standard flow meter, this paper designs a suit of thermal flow meter's calibration test-bed.
设计了一套热式流量计的标定试验台，用标准流量计法，对热式流量计进行标定。
In order to calibrate the thermal mass air flow meter by the method of standard flow meter, this paper designs a suit of thermal flow meter's calibration test-bed.
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