Overview
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Read the articleAUTHOR
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Claude GAILLEDREAU: Engineer from the École Nationale Supérieure de Chimie et de Physique de Bordeaux (France)
INTRODUCTION
The industrial flowmeter market currently offers a large number of different types of instruments, the main ones of which can be classified as follows:
differential pressure (or orifice) flowmeters, rotameters ;
weirs and channels ;
turbine flowmeters, meters ;
electromagnetic flowmeters, ultrasonic flowmeters ;
oscillating flowmeters.
Each of these types of flowmeter has its own preferred field of application, depending on the fluid, measurement range and accuracy requirements.
Depressurized orifice flowmeters are widely used in industry, both for liquids and for gases and vapors, whether clean or slightly contaminated.
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Differential pressure flowmeters
Principle of differential pressure flow measurement
Installation
Insert the CD ROM into the drive and double-click on "My Computer".
Double-click on the "Setup" icon.
The installation program generates a Program Files \TI\DepWin directory, but you can choose to create a different directory; an icon is also created, and placed on the "Desktop". If this is not the case, you can create a shortcut from Windows Explorer. Don't forget (if you...
Controls
Program commands can be accessed either from a menu bar or from a toolbar below. The list of commands and how to access them is :
The wording of the toolbar icons is that of the hint message that appears when the cursor is brought close to the corresponding icon.
1. File/New menu or "Reset" icon: variables on screen are completely erased. Use to perform a new calculation without...
Program description
Program
The program includes the following functional elements:
A practical note on checking integrated orifices
This note is intended for users who attempt to verify built-in orifices using the present program.
Integrated orifices are devices whose diameters are generally below the minimum limits set by ISO for pipe and primary element diameters, and which may deviate from the standard in many other respects: it is therefore by no means certain that their coefficients are...
Printing data
The DEPWIN program can print out the results displayed on the screen. To do this, simply activate the "Print" command (§ 2). A second screen appears, showing the results as they will be printed.
At the top of this screen is a toolbar:
the first three buttons from the left are zooms, allowing you to select the data display. They have no further effect...
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