scholarly journals Self-Calibration of Ultrasonic Water Flow Meter

2019 ◽  
Vol 8 (4) ◽  
pp. 6011-6017
Keyword(s):  
Water Flow ◽  
Piecewise Linear ◽  
Calibration Procedure ◽  
Dynamical Characteristic ◽  
Flow Meter ◽  
Flow Measurements ◽  
Flow Meters ◽  
Flow Metering ◽  
Rf Communication ◽  
Fluid Properties

Due to fluid properties, flow patterns, external factors (temperature, pressure, etc.) measurement shows a dynamical characteristic. Therefore, calibration is an indispensable process in order to ensure the standards of flow metering. Ultrasonic flow meters, which are ameliorated the readings over time, are promising devices to minimize the flow measurements error. In this paper, the calibration procedure of a specific ultrasonic water flow meter is discussed, and then a wireless system is proposed to carry out fine calibration. According to the results, piecewise linear least squares approach supplies the best performance at overall volumetric flow rates accompanying with wireless fine calibration system based on RF communication

scholarly journals Development of a self-rechargeable digital water flow meter

2013 ◽  
Vol 15 (3) ◽  
pp. 888-896 ◽  
Author(s):  
Songhao Wang ◽  
Ronald Garcia
Keyword(s):  
Water Flow ◽  
Water Pressure ◽  
Communication Technologies ◽  
Turbine Generator ◽  
Flow Meter ◽  
Flow Meters ◽  
Pelton Turbine ◽  
Zigbee Technology ◽  
Diameter Pipe ◽  
Water Meters

The objective of this paper is to present the feasibility of a self-rechargeable digital water flow meter (SRDFM) system for water pipes using the latest data processing and wireless communication technologies while causing negligible water pressure drop (head loss). The system uses a Pelton turbine generator to power the electronic circuit, which processes and transmits the signals generated by several flow meters. ZigBee technology was used to process and send wireless signals. Signals from two water meters were acquired, processed, and transmitted with only one control/transmission unit during this study. The new system was assessed experimentally, reaching a maximum of 80 m of wireless transmittance distance at a minimum flow rate of 5 L/min for a 16-mm diameter pipe (self-charged).

Implementation of Instrumentalised Virtual Multiphase Flow Metering Technology in the Wells of the Vostochno-Makarovskoye Gas Condensate Field

2020 ◽  
Author(s):  
Andrey Zozulya ◽  
Vladimir Baranov ◽  
Mikhail Miletski ◽  
Konstantin Rymarenko ◽  
Marat Nukhaev ◽  
...  
Keyword(s):  
Multiphase Flow ◽  
Liquid Hydrocarbon ◽  
Operating Conditions ◽  
Gas Condensate ◽  
Flow Measurements ◽  
Hydrocarbon Production ◽  
Flow Meters ◽  
Well Production ◽  
Track Record ◽  
Flow Metering

Summary Liquid hydrocarbon quantity optimization is among key technological indicators in the gas condensate fields development. To achieve it one needs to select and maintain optimal well-operating conditions. In this case, multiphase flow measurements are prioritized as an important optimization tool. The article presents a proven record of implementing the technology of instrumentalised virtual multiphase flow metering in the wells of the Vostochno-Makarovskoye gas condensate field to increase the efficiency of liquid hydrocarbon production. Virtual flow metering technologies that use modeling methods and adapt models to actual well-operating parameters aiming at determining well production rates are becoming increasingly popular. At that, the quality of the data at the model input does not often guarantee a qualitative determination of multiphase flow parameters. This article presents a track record of building a virtual multiphase flow meter based on single-phase streamer flow meters mounted on gas wells. Venturi flow meters were used. A series of well tests were conducted in various modes. To configure the streamer model, additional tuning studies were conducted on the separator. While testing the wells, the results of constructing a streamer model were verified by nodal analysis.

Flow Calibration and Error Analysis of Dual-Axis Tracking Trough Solar Collector System

2014 ◽  
Vol 654 ◽  
pp. 262-265
Author(s):  
Jian Ling Deng ◽  
Yong Zhu ◽  
Zi Li Zhou ◽  
Rong Rong Zhai ◽  
Ji Feng Song ◽  
...  
Keyword(s):  
Experimental Study ◽  
Mass Flow ◽  
Solar Collector ◽  
Rotation Speed ◽  
Flow Meter ◽  
Flow Measurements ◽  
Flow Meters ◽  
Collector System ◽  
Ultrasonic Flow Meter

In this paper, a dual-axis tracking trough solar collector system is established, and used to measure and calibrate flow rate at different conditions by using the ultrasonic flow meter and mass flow meter, providing important reference for follow-up experimental study. With the changing of the medium’s temperature and the rotation speed variation of the pump, the two flow meters were used to work together to measure the accurate flow measurements, obtaining the measurement error of the mass flow meter. After that, the reason of error and methods used to reduce the error are analyzed.

Fluid Motion in Ultrasonic Flowmeter Cavities

1999 ◽  
Vol 121 (2) ◽  
pp. 422-426 ◽  
Author(s):  
Tore Lo̸land ◽  
Lars R. Sætran ◽  
Robert Olsen ◽  
Inge R. Gran ◽  
Reidar Sakariassen
Keyword(s):  
Secondary Flow ◽  
Dynamic Range ◽  
Fluid Motion ◽  
Fluid Flows ◽  
Characteristic Size ◽  
Flow Meter ◽  
Flow Measurements ◽  
Flow Meters ◽  
Ultrasonic Flow Meter ◽  
Cavity Width

The ultrasonic flow meter is a newcomer among flow meters for measuring large quantities of natural gas. It has notable advantages compared to traditional meters. The ultrasonic flow meter is much more compact and has a wider dynamic range for flow measurements than the orifice plate meter. When manufactured, the ultrasonic sensors are often set back from the pipe wall in a cavity. When the fluid flows past the cavities, a secondary flow of vortices with characteristic size equal to the cavity width is established inside the cavities. The aim of this study has been to investigate the influence of this secondary flow on the accuracy of the ultrasonic flow meter. Both measurements and numerical simulations of the cavity flow have been conducted. It has been found from the present work, that the influence of the flow in the cavities on the measurements increases nonlinearly with the pipe flow rate.

scholarly journals CALIBRATION OF ULTRASONIC FLOWMETER FOR WI-FI NETWORK WITH THE HELP OF WEB BROWSER

2019 ◽  
Vol 45 (3) ◽  
pp. 94-102
Author(s):  
M. A. Velichko ◽  
Yu. P. Gladkikh ◽  
O. N. Satler
Keyword(s):  
Operating Systems ◽  
Information Exchange ◽  
Data Exchange ◽  
Gas Flow ◽  
Access Point ◽  
Laptop Computer ◽  
Flow Meter ◽  
Flow Measurements ◽  
Flow Meters ◽  
Software Complex

Objectives. The purpose of the work was to change the method of signal transmission containing metrological information from industrial time-pulse ultrasonic gas flow meter to a compu-ting device (CD). It was planned to expand the range of devices serving as gas flow calculators. A hardware-software complex (HSC) for automatic calibration / verification of ultrasonic flowmeters was to be developed. This HSC should work equally well on different operating systems. The information exchange between the CD and the flowmeter was to be carried out wirelessly.Method. The Wi-Fi Pro-tocol was used as a wireless Protocol. The energy-efficient ESP8266 controller was chosen as micro-controller to provide the functionality of Wi-Fi. The ESP8266 board acted as a Wi-Fi access point on the network to which CD was connected for data exchange. The ESP8266 microcontroller also served as a HTTP server. Exchange of metrological and other information was carried out by GET-requests. Given the need for continuous flow measurements and simultaneous communication between the user and the flow meter, requests to the server were transmitted using AJAX technology. The software part of the APK consisted of 3 programs: a program that measured the flow and transmitted the information further to the ESP8266 microcontroller, a server program recorded in ESP8266, providing a response to the requests of CD users, and the client program installed on the CD. The article discusses the key points of the HSC.Result. As a result of this work, the HSC was processed for calibration/verification of ultrasonic gas flow meters. For the first time this process for industrial flow meters was implemented using the ESP8266Wi-Fi controller as an access point. As a WU, it became possible to use any desktop or laptop computer or mobile device with a modern browser.Conclusion. The method proposed in the paper significantly simplified the data exchange between the VU and the flowmeter, reduced the cost of software development due to the common approach for different operating systems.

Correction of Flow Metering Coefficients Using Two-Dimensional Curve Fitting

2011 ◽  
Author(s):  
Sejong Chun ◽  
Byung-Ro Yoon ◽  
Duck-Ki Lee ◽  
Hae-Man Choi
Keyword(s):  
Reynolds Number ◽  
Curve Fitting ◽  
Two Dimensional ◽  
Flow Meter ◽  
Flow Meters ◽  
Flow Rates ◽  
Correction Formula ◽  
Flow Metering ◽  
Marquardt Algorithm ◽  
Swirl Flows

Swirl flows are either tumbling motions of main flows or circulating secondary flows in the cross-section of pipe, which makes accurate flow metering difficult without installing a long straight pipe upstream of a flow meter. However, there are many situations, where such long upstream/downstream pipelines cannot be installed due to limited space in the installation site for flow metering. The relative deviations of flow rates between the testing and the reference flow meters can be reduced by introducing a correction formula. The correction formula considers flow parameters such as curve number, swirl factor, Reynolds number and two non-dimensional numbers regarding installation of flow meters. Nonetheless, there are certain flows where the correction formula is not effective due to strong swirl flows. Two-dimensional curve fitting is introduced in the present study to solve some of difficulties in compensating flow rates due to swirl flows upstream/downstream of flow control elements, i.e., a contraction pipe, an expansion pipe, a single elbow and a butterfly valve. This method minimizes the gap between the measured and the estimated flow rates by applying the Levenberg-Marquardt algorithm. 2nd or 4th order polynomials with two independent variables, i.e., Reynolds number and a non-dimensional location of testing flow meter, are chosen to test their ability to compensate flow rates. From this study, the relative deviations were maintained within ±2% by applying the two-dimensional curve fitting.

scholarly journals Installation for the high accuracy flow meter calibration with the weighting method

2019 ◽  
Author(s):  
Djordje Cantrak ◽  
Dejan Ilic ◽  
Novica Jankovic ◽  
Branka Radanov
Keyword(s):  
Measurement Uncertainty ◽  
Calibration Procedure ◽  
High Accuracy ◽  
Numerical Results ◽  
Flow Meter ◽  
Weighting Method ◽  
Flow Meters ◽  
Measurement Methodology ◽  
Weighing Method ◽  
Operating Regimes

Installation for precise flow meter calibrations meets demands of the relevant standards: high-quality installation, appropriate calibration methodology, instruments of high accuracy and satisfactory measurement uncertainty. So, it is necessary to calibrate the flow meter on an adequate installation. Designed and assembled installation for flow meters calibration for measurement of liquid flow in closed conduits up to 10 l/min, based on weighing method, is presented in this paper. Modified measurement methodology, which mainly follows standard ISO 4185, is presented in this paper. The geometry of the whole installation is presented and afterwards used for numerical experiments. Two numerical meshes were tested. First approach had a half a million cells and the second mesh was consisted of approximately 1.6 million cells. Both meshes were unstructured. Numerical results were used for installation test before manufacturing and assembling. The test rig was manufactured after the numerical results evaluation. Experimental validation of the calibration procedure followed. Obtained experimental results and measurement uncertainty for three operating regimes were analysed and reported. It was proved, experimentally and numerically, that uniform, i.e. developed turbulent flow, was achieved in the straight measurement section, what is of great importance for flow measurement calibration.

Investigation of the influence of the flow structure on the accuracy of flow measurement before a hydrometric structure in an open channel

2020 ◽  
pp. 41-44
Author(s):  
Anatoly Kusher
Keyword(s):  
Velocity Profile ◽  
Flow Velocity ◽  
Water Flow ◽  
Flow Measurement ◽  
Water Discharge ◽  
Critical Depth ◽  
Flow Measurements ◽  
Study Results ◽  
Flow Velocity Profile ◽  
Upstream Flow

The reliability of water flow measurement in irrigational canals depends on the measurement method and design features of the flow-measuring structure and the upstream flow velocity profile. The flow velocity profile is a function of the channel geometry and wall roughness. The article presents the study results of the influence of the upstream flow velocity profile on the discharge measurement accuracy. For this, the physical and numerical modeling of two structures was carried out: a critical depth flume and a hydrometric overfall in a rectangular channel. According to the data of numerical simulation of the critical depth flume with a uniform and parabolic (1/7) velocity profile in the upstream channel, the values of water discharge differ very little from the experimental values in the laboratory model with a similar geometry (δ < 2 %). In contrast to the critical depth flume, a change in the velocity profile only due to an increase in the height of the bottom roughness by 3 mm causes a decrease of the overfall discharge coefficient by 4…5 %. According to the results of the numerical and physical modeling, it was found that an increase of backwater by hydrometric structure reduces the influence of the upstream flow velocity profile and increases the reliability of water flow measurements.

scholarly journals Effect of Doppler flow meter position on discharge measurement in surcharged manholes

2017 ◽  
Vol 77 (3) ◽  
pp. 647-654 ◽  
Author(s):  
Haoming Yang ◽  
David Z. Zhu ◽  
Yanchen Liu
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Flow Field ◽  
Flow Regimes ◽  
Flow Meter ◽  
Flow Meters ◽  
Flow Discharge ◽  
Doppler Flow ◽  
Sewer Systems ◽  
Computational Fluid Dynamics Cfd

Abstract Determining the proper installation location of flow meters is important for accurate measurement of discharge in sewer systems. In this study, flow field and flow regimes in two types of manholes under surcharged flow were investigated using a commercial computational fluid dynamics (CFD) code. The error in measuring the flow discharge using a Doppler flow meter (based on the velocity in a Doppler beam) was then estimated. The values of the corrective coefficient were obtained for the Doppler flow meter at different locations under various conditions. Suggestions for selecting installation positions are provided.

Theory to Help the Use of Electromagnetic Flow Meters

2002 ◽  
Author(s):  
Xiao-Zhang Zhang
Keyword(s):  
Pipe Wall ◽  
Three Dimensional ◽  
Electromagnetic Properties ◽  
Reasonable Accuracy ◽  
Flow Meter ◽  
Flow Meters ◽  
Electromagnetic Flow ◽  
Gas Liquid Flow ◽  
Electromagnetic Flow Meter ◽  
Theory Research

Compared with other flow meters, the theory of electromagnetic flow meter is well developed. Until now, we are able to predict the three dimensional characteristics of this kind of flow meters with reasonable accuracy. This has given much help to the designers to improve the flow meters. On the other hand, the theory can offer a tool for the users of this kind of flow meters to judge the application situations, estimate the possible measurement error, etc. This paper introduces the recent work of the author on the theory of the electromagnetic flow meter. The basic physical conceptions and equations are given with a brief history review of the theory research. Several examples are given of using the theory to analyze the meters’ behavior in different application situations. They are: effect of the conducting pipe connections; errors caused by a pipe wall of different electromagnetic properties; gas-liquid flow and errors caused by a relative motion of the probe.

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