Turbine flow meters where frequency velocity 6.
Flow measurement devices pdf.
Measuring the flowrate and quantities of flowing fluids are described and compared.
1 1 types of flow measurement devices fluid flow devices fall into a number of device categories as well as fluid classes.
A venturimeter is a device meant for measuring the quantity of a liquid flowing through a pipe.
Flow measurement pdf 1.
Acoustic flow meters based on doppler effect 5.
The piston meter operates on the principle of a piston rotating within a.
Numerous practical details provide the user with valuable information about flow metering in industrial applications.
In its simplest form the device consists of a short converging section leading to a throat and followed by a diverging section.
Hot wire anemometers based on h f v 4.
Fixed restriction variable head type flow meters using different sensors like orifice plate venturi tube flow nozzle pitot tube dall tube quan.
Cryogenic flow metering techniques 1.
Flow measurement devices increasing utilization and the value of water makes the understanding of water measuring techniques important and necessary.
Types of flow meters and their applications flow measuring device 1.
Accurate flow measurement is very important for proper and equitable distribution of water among water users.
Clean or dirty wet or dry hazardous corrosive or safe single or multi phase laminar of turbulent varying pressure contents provided in this presentation are for reference purpose the detailed theory to be read written from respective text book class notes varying pressure varying temperature.
Flow measuring devices are generally classified into four groups.
2 industrial instrumentation c 8 n ind book1 1 they are.
Because they are used for domestic water measurement piston meters also known as rotary piston or semi positive displacement meters are the most common flow measurement devices in the uk and are used for almost all meter sizes up to and including 40 mm 1 1 2 in.
Friction pressure drop packed screens 3.
Flow measurements types of flow encountered.
Crude methods of flow measurement but as you will see these crude methods are still in use today.
The differential pressure flow meter is based on the bernoulli equation where the pressure drop and the further measured signal is a function of the square flow speed.
The flow measuring device including flow measurement valves should be positioned upstream of any associated valve and installed with a reasonable length of straight pipe upstream and downstream of the device.
Pressure drop devices based on bernoulli principle a venturi b orifice plate c pitot tube 2.
In general we can split the fluids into two classes.
Information concerning the volume of available water is very helpful in planning.
Where a measuring accuracy of 5 is sufficient these lengths should be a minimum of ten and three equivalent pipe diameters respectively.
