2.3 venturi flow meter the venturi flow meter, while considered an obstruction flow meter, is less of an obstruction than the orifice type. If the mechanical, thermal or corrosion properties of glass tubes are not adequate in certain applications, metal meter tubes can be used.
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That’s why we’ve broken down each flow meter type for you, so you can decide which type of meter is the best for your unique application.
Flow meter types and their principles pdf. Animation when fluid is flowing though. A number of such meters have been developed since the early eighties by research organizations, meter manufacturers, oil and gas production companies and others. Basically, the flow meter uses mechanical movement inside the meter to calculate the flow.
Flow meters can be classified into differential pressure meters, variable area meter, positive displacement meters, magnetic, turbine, ultrasonic, vortex, and coriolis. This article discusses the curved tube design. It still does have a certain amount of pressure drop, but it is significantly less than the orifice type meter.
Friction pressure drop (packed screens) 3. Tapping 1 tapping 2 o p1 ρ o p2 ρ v 1 d 2 d 1 ∆p reference plane v 2 level resulted from tappings b a diagram 2 z 2 z 1 a liquid with a density of ρ o flows constantly in a pipe with reducing diameters from a to b. In differential pressure meters a restriction is used to create a pressure drop.
The flow rate is obtained by measuring the pressure differential and extracting the square root. Turbine flow meters where frequency ~ velocity 6. Consider the diagram 2 below;
Electromagnetic flow meter, ultrasonic flow meter, Introduction the need for multiphase flow measurement in the oil and gas production industry has been evident for many years. Differential pressure flow sensors are the most popular type of flow sensors due to their performance and versatility.
Type of usage like domestic, commercial and industrial. Variable area flow meters (rotameters), turbine flow meter, target flow meters etc. These flow meters are ideal for measuring liquid and steam flows at high temperatures and pressures.
This paper describes a mass flow meter which successfully uses the coriolis and gyroscopic principles in directly measuring mass flow rates. Technical like single phase, lt, three phases, ht and many more. Flow measurements types of flow encountered:
This is also the reason that the next flow meter type was developed. The curved tube flow meter and the straight tube flow meter. Cryogenic flow metering techniques 1.
These flow meters c an precisely measure mass flow of gases from low to high flows. Animation a rotating mass flow meter to illustrate the operating principle of the vibrating mass flow meter. Different types of flow meters & their applications flow meter requirements vary, from mass flow to volume flow and beyond.
Tion of the four most common flow meters: Fall under mechanical type flow meters. Such that the diameters (bores) of the meter at (a) and (b) are 26 mm and 16 mm respectively.
The orifice meter is a plate with a central hole introduced into the flow path, see figure (4). 5.1 oval gear meters, oscillating piston meters. Acoustic flow meters based on doppler effect 5.
What are the types of flow meter. Also, 𝑃𝐴 𝜌𝑔 and 𝑃𝐵 𝜌𝑔 are the respective heights of the manometric tubes a and b in meters. Pressure drop devices based on bernoulli principle a) venturi b) orifice plate c) pitot tube 2.
The turbine flow meter has a relatively simple working principle compared to other flow meters on the market. Operating principle there are two basic configurations: The key uses of these meters are presented along with their advantages/disadvantages and system considerations.
Tity meters like positive displacement meters, mass flow meters etc. Let’s break that down some more. Energy meter are classified in three basic types accordance with various factors such as:
The flowrate scale for glass tube flowmeters is located directly on the meter tube. These flow meters work well in liquids when we want to avoid pipe cutting or shutdown Hot wire anemometers based on h = f(v) 4.
The basic operating principle of differential pressure flowmeters is based on the premise that the pressure drop across the meter is proportional to the square of the flow rate. 269 5.2 lobed impeller meters. • 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 •.
Handbook of multiphase flow metering page 4 of 113 1.
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