Fluid Flow Measurement Devices Ppt

The different types of fluid flow are represented in the graph below.

Fluid flow measurement devices ppt.

Within these two broad classes are a number of special classes that one should be careful of. Pitot tube measure local velocity at given point in stream not average velocity in pipe. Pressure drop devices venturi flow meters have advantage over orifice plate due to low loss coefficient c d is the discharge coefficient 1 for venturi 0 6 for orifice pressure transducer should be located at low temperature if possible. Obstruction or head type flowmeters are of two types.

View and download powerpoint presentations on flow measurement devices ppt. Slideshare explore search you. When pitot tube placed in a pipe from which fluid is flowing as pitot tube has two tubes one with large. Steady or unsteady flow.

In comparison to other flow measurement devices such as an orifice plate the smooth contraction and expansion does not cause a significant pressure loss as fluid streamlines are able to conform to the geometry. In the venturi tube the fluid. In this article we will try to look at each category with brief details of particular devices that fall under that category. Flammable liquids and gasses require special handling as do those that are at temperature extremes cold.

Flow meter is a device that measures the rate of flow or quantity of a moving fluid in an open or closed conduit. 150053119007 harsh dharaiya 150053119008 dharmajeet jadeja 150053119009 bhavesh katariya 2. Convergent divergent nozzle venturi meter. A rotameter is an example of a variable area meter where a weighted float rises in a tapered tube as the flow rate increases.

The float stops rising when area between float and tube is large enough that the. 1 1 types of flow measurement devices fluid flow devices fall into a number of device categories as well as fluid classes. A variable area meter measures fluid flow by allowing the cross sectional area of the device to vary in response to the flow causing some measurable effect that indicates the rate. In general we can split the fluids into two classes.

Types of flow meters and their applications flow measuring device 1. A venturimeter is a device meant for measuring the quantity of a liquid flowing through a pipe. The unique cryogenic features have to do with instrumentation used to detect signal and need for low heat leak. Pitot tube is pressure measure instrument used to measure fluid flow velocity.

Some of these characteristics reflect the properties of the liquid itself and others focus on how the fluid is moving. Fluid mechanics flow measuring devices created by. Types of fluid flow fluid flow has all kinds of aspects steady or unsteady compressible or incompressible viscous or non viscous and rotational or irrotational to name a few. Assuming the flow is incompressible flow ρ is constant and that pressure variations due to area change dominate the effects.

Venturi tube due to simplicity and dependability the venturi tube flowmeter is often used in applications where it s necessary with higher turn down rates or lower pressure drops than the orifice plate can provide.