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.

Invariant method for measuring wet gas flow rate

2021 ◽  
pp. 13-19
Author(s):  
Zhanat А. Dayev ◽  
Gulzhan E. Shopanova ◽  
Bakytgul А. Toksanbaeva
Keyword(s):  
Flow Rate ◽  
Measurement System ◽  
Flow Measurement ◽  
Gas Flow ◽  
Test Results ◽  
Invariant System ◽  
Rate Measurement ◽  
Gas Flow Rate ◽  
Flow Rate Measurement ◽  
Wet Gas

The article deals with one of the important tasks of modern flow measurement, which is related to the measurement of the flow rate and the amount of wet gas. This task becomes especially important when it becomes necessary to obtain information about the separate amount of the dry part of the gas that is contained in the form of a mixture in the wet gas stream. The paper presents the principle of operation and structure of the invariant system for measuring the flow rate of wet gas, which is based on the combined use of differential pressure flowmeters and Coriolis flowmeters. The operation of the invariant wet gas flow rate measurement system is based on the simultaneous application of the multichannel principle and the partial flow measurement method. Coriolis flowmeters and the differential pressure flowmeter are used as the main elements of the system. The proposed measurement system does not offer applications for gases with abundant drip humidity. The article provides information about the test results of the proposed invariant system. The estimation of the metrological characteristics of the invariant system when measuring the flow rate of wet gas is given. The obtained test results of the invariant wet gas flow rate measurement system are relevant for natural gas production, transportation, and storage facilities.

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.

Performance Enhancement of Wet Gas Flow Meter

2002 ◽  
Author(s):  
Kyung-Am Park ◽  
Haeman Choi ◽  
Younkyun Oh ◽  
Dugki Lee
Keyword(s):  
Measurement Error ◽  
Flow Rate ◽  
Flow Measurement ◽  
Gas Flow ◽  
Performance Enhancement ◽  
Magnetic Coupling ◽  
Water Evaporation ◽  
Gas Flow Rate ◽  
Flow Meter ◽  
Wet Gas

Wet gas flow meters are used in the gas flow meter manufacturing industries as a reference meter. Also those meters are used for gas flow measurement in many areas. Oil is suggested for sealing fluid in a wet gas flow meter. But water is used because of cheap and easy handling fluid in the industries. In this case, the inlet gas flow rate is different with the outlet gas flow rate because the evaporation of water in the chamber. It is important to estimate the rate of water evaporation and effects on flow measurement error. The humidity of wet gas in the outlet of a flow meter was measured. Flow measurement error due to water evaporation is about 2%. Those results will be useful for flow measurement error reduction of wet gas flow meter using water as sealing fluid. The new developed wet gas meter measured pulse and frequency in encoder through magnetic coupling between the chamber and an encoder. The flow quantity was compensated with adjustment of flow rate error. So the rangeability and error of flow measurement were enhanced remarkably.

Calibration of Gas-Metering Constrictions

1974 ◽  
Vol 7 (1) ◽  
pp. 35-39
Author(s):  
T. H. Redding
Keyword(s):  
Compressible Flow ◽  
Expansion Coefficient ◽  
Flow Rate ◽  
Incompressible Flow ◽  
Flow Measurement ◽  
Gas Flow ◽  
Flow Coefficient ◽  
Gas Flow Rate

To extend the range of usefulness of a water calibrated metering constriction in the field of gas flow measurement, a method is described for determining the expansion coefficient (∈) which does not involve measurement of gas flow rate, while the precision of the method is such as to achieve accuracy tolerances of the order ±0· 30%. When used in conjunction with flow coefficients appropriate to incompressible flow, the flow coefficient appropriate to compressible flow is determined with an overall tolerance well within the limits ±0· 5% over a range of ∈ of 1 > ∈ > 0· 90.

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.

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.

Automated low gas flow-rate calibrator

1989 ◽  
Vol 54 (11) ◽  
pp. 3025-3030
Author(s):  
Stanislav Wičar ◽  
Martin Svozil ◽  
Pavel Šimík
Keyword(s):  
Relative Error ◽  
Flow Rate ◽  
Pressure Difference ◽  
Flow Measurement ◽  
Gas Flow ◽  
Frequency Measurement ◽  
New Method ◽  
Gas Flow Rate ◽  
The Absolute

A new method of the absolute low gas flow measurement was developed. The method is based on the comparison of the known rate of a piston movement in a calibrated cylinder with the measured gas flow rate. Due to its compensating character, the method is extremely sensitive, and the relative error is given merely by the sensitivity of determining the pressure difference between the cylinder and atmosphere. The method is absolute as the apparatus constant is determined by such operations as weighing and frequency measurement.

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