METHODS AND DEVICES FOR TEMPERATURE COMPENSATION IN GAS FLOW METERS

2021 ◽  
Author(s):  
Жанна Артуровна Сухинец ◽  
Ольга Олеговна Валямова ◽  
Артур Игоревич Гулин
Keyword(s):  
Output Signal ◽  
Temperature Compensation ◽  
Flow Measurement ◽  
Gas Flow ◽  
Thermal Compensation ◽  
Flow Meters ◽  
Compensation Methods ◽  
Measurement Tools ◽  
Electronic Compensation

В статье рассмотрены типы средств измерения расхода газа, проведен анализ особенностей методов термокомпенсации и вопросов коррекции выходного сигнала расходомеров по температуре с помощью механических и электронных устройств компенсации. The article discusses the types of gas flow measurement tools, analyzes the features of thermal compensation methods and issues of correcting the output signal of flow meters by temperature using mechanical and electronic compensation devices.

Design of Flare Gas Flow Measurement System on Offshore Oil Platform

2013 ◽  
Vol 385-386 ◽  
pp. 460-463
Author(s):  
Qiang Gao ◽  
Hong Ye Zhao
Keyword(s):  
Control System ◽  
Measurement System ◽  
Flow Measurement ◽  
Gas Flow ◽  
Flow Meter ◽  
Flow Meters ◽  
Flow Monitoring ◽  
Offshore Oil ◽  
Cap Method

Aiming at the problems of flare gas flow monitoring on offshore oil platform, a flare gas flow measurement system is designed. This system is integrated in the whole flare control system and reaches the effective monitoring of flare gas flow. Besides it adopts ultrasonic flow-meters for the more accurate flow-meter data and adopts hot-cap method for the realization of being installed without halting production. Results indicate that the design could offshore oil platform improve the efficiency and safety of production in offshore oil platform.

scholarly journals An Analytical Method for Gas Flow Measurement Using Conservative Chemical Elements

2021 ◽  
Vol 11 (14) ◽  
pp. 6415
Author(s):  
Seok-Hwi Kim ◽  
Gibbum Lee
Keyword(s):  
Flow Rate ◽  
Flow Measurement ◽  
Gas Flow ◽  
Large Deviation ◽  
Chemical Elements ◽  
Gas Composition ◽  
Mixing Ratio ◽  
Flow Meters ◽  
Stable Chemical ◽  
Mixed Gases

Mass flow meters (MFMs) are widely used to secure reliable flow rates based on the mass value of the gas being measured. However, chemical reactions produce various kinds of gases, and their composition also changes in real time. Thus, there may be a large deviation in the gas flow if the gases’ composition and its mixing ratio are not known. In this study, we derived a gas flow rate measurement method using a chemically stable chemical specie and verified the precision of the proposed method through comparative analysis with an MFM. The flow rate by this method showed reliable results in both single and mixed gases. Notably, the results were within ±2.74% of the injected flowrate values in the gas mixtures. This method is expected to be able to fundamentally overcome the limitations of the mechanical flowmeter because it is not affected by changes in gas composition or mixing ratio during the reaction.

scholarly journals FLOW METERS REVIEW AND ANALYSIS / SRAUTO GREIČIŲ MATUOKLIŲ APŽVALGOS ANALIZĖ

2011 ◽  
Vol 3 (2) ◽  
pp. 126-131
Author(s):  
Vaidas Jozonis ◽  
Jonas Stankūnas ◽  
Andrius Jozonis
Keyword(s):  
Flow Measurement ◽  
Gas Flow ◽  
Signal Amplitude ◽  
Measurement Methods ◽  
Voltage Amplitude ◽  
Gas Flow Rate ◽  
Flow Meters ◽  
Speed Flow ◽  
Comparative Review ◽  
Temporal Method

In the article dealt the speed-flow meters, they are classified according to the working of the principle, discussed the advantages, disadvantages, a comparative review. The examination of all possible flow measurement methods, they can be sort into five major groups. The aim was to review the different approaches used to measure the voltage amplitude value of a signal and to describe the capabilities of a projected instrument system. The most modern technological processes take measurement of flowing gas flow rate and flow. For this purpose, ultrasound, especially pulsed time are widely stared to apply. The most pulsed temporal method for measuring disadvantage is that a signal amplitude can vary only in strictly defined limits. Othewise, the signals may not be given or taken in wrong moment.

Velocity Profiles of Liquid Flow Through Circular Tubes and How They Affect Flow Measurement

1991 ◽  
Vol 113 (3) ◽  
pp. 206-210 ◽  
Author(s):  
D. Yogi Goswami
Keyword(s):  
Transition Region ◽  
Laser Doppler Velocimetry ◽  
Flow Measurement ◽  
Velocity Profiles ◽  
Turbulent Regime ◽  
Flow Meters ◽  
Circular Tubes ◽  
Flow Through ◽  
Hydrogen Bubble Technique

This paper analyzes velocity profiles for flow through circular tubes in laminar, turbulent, and transition region flows and how they affect measurement by flow-meters. Experimental measurements of velocity profiles across the cross-section of straight circular tubes were made using laser doppler velocimetry. In addition, flow visualization was done using the hydrogen bubble technique. Velocity profiles in the laminar and the turbulent flow are quite predictable which allow the determination of meter factors for accurate flow measurement. However, the profiles can not be predicted at all in the transition region. Therefore, for the accuracy of the flowmeter, it must be ensured that the flow is completely in the laminar regime or completely in the turbulent regime. In the laminar flow a bend, even at a large distance, affects the meter factor. The paper also discusses some strategies to restructure the flow to avoid the transition region.

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