The primary function of Gas Analytical orifice meter is to measure the flow rate of a gas or liquid. This piece of equipment consists of three main parts: a plate housing, a meter tube, and an orifice plate. ... Gas Analytical provides three main types of orifice nozzle and venturi flow rate meters: Single chamber; ... Gas Analytical Services ...

get priceMeasurement of pipe flow rate can use various flow meters, including a differential pressure flowmeter, like the orifice meter, venturi meter and flow nozzle meter. Other types of liquid flow meter are the rotameter, magnetic flow meter, ultrasonic meter, turbine flow meter and coriolis flow meter.

get priceAn Orifice Meter is basically a type of flow meter used to measure the rate of flow of Liquid or Gas, especially Steam, using the Differential Pressure Measurement principle. It is mainly used for robust applications as it is known for its durability and is very economical. As the name implies, it consists of an Orifice …

get priceNov 14, 2017· Note that by default, Venturi flow meters offer an accuracy of around ±1% of the discharge coefficient. Optimum calibration allows an even greater accuracy of up to ±0.25%. Venturi nozzle flow rate measurement systems are marginally more expensive than orifice-style flow meter …

get priceOrifice Meter • Orifice meter is a device used to measure volumetric flow rate. • It uses Bernoulli's principle as used by venturimeter. Following table summarizes difference between Venturi meter and Orifice meter.

get priceAmity Flow has served the flow measurement industry since 1973 and built a solid reputation of fabrication expertise as well as design and technology innovations. We produce Amity Venturi Meters …

get pricemeasurements. Calculate the coefficient of discharge from experimental data for a venturi meter. Determine the relationship between Reynolds number and the coefficient of discharge. 2. INTRODUCTION The orifice meter, the nozzle meter, and the Venturi meter are the most common devices used to measure the instantaneous flowrate.

get priceThe Classical Venturi flow meter design provides longer lasting accuracy and lower permanent pressure loss than orifice and nozzle style meters, reducing maintenance and operating costs. The Classical Venturi meter design is suitable for flow rate measurement …

get priceVenturi and orifice plate flowmeters are devices which facilitate measurement of the fluid flow rate in a pipe. Although somewhat similar, they do differ in physical configuration and operating principle. A venturi meter (often called a "venturi…

get priceFig. 2 Orifice meter Figure 2 shows an orifice meter with the variable position of vena contracta with respect to the orifice plate. By employing the continuity equation and Bernoulli's principle, the volumetric flow rate through the orifice meter can be calculated as described previously for venturi meter. Hence, ¥ …

get priceSep 08, 2018· * Venturi meter presents a costlier method to measure the rate flow of fluid through the pipe. Orifice meter presents a cheaper method to measure the rate of flow through the pipe. * Energy losses are less in a venturi meter whereas Energy losses...

get priceThe most commonly used inferential or rate meter is the thin-plate, concentric orifice meter which is the primary device discussed in this paper. 1.2.2 Flow Nozzles and Venturi Tubes Flow nozzles and Venturi tubes are primary rate devices which will handle about 60% more flow than an orifice …

get priceFM 308 - Flow Measurement by Venturi and Orifice meter Objectives: 1. To find the coefficient of discharge for venturi meter. 2. To find the coefficient of discharge for orifice meter. Theory: Venturi meter and orifice meter are the commonly used flow meters for measuring mass/volumetric flow rate …

get priceThe flow rate of a fluid flowing in a pipe under pressure is measured for a variety of applications, such as monitoring of pipe flow rate and control of industrial processes. Differential pressure flow meters, consisting of orifice, flow nozzle, and venturi meters, are widely used for pipe flow measurement and are the topic of this course.

get priceMar 05, 2011· The image below shows an Excel spreadsheet that can be used as a pipe flow rate calculator, based on the measured pressure difference across a flow nozzle, venturi, or Orifice flow meter. This spreadsheet is suitable when the fluid density is known (as for a liquid) and the meter …

get priceJul 01, 2011· The pressure difference before and after the orifice tells the rate of flow of the fluid. This is actually a special case of Venturi meter and cause more energy losses than Venturi meter. These orifice …

get priceVenturi nozzles and flow nozzles from WIKA offer a wide variety of application possibilities. They are suitable for liquid, gas and steam flow measurement. Depending on the measuring point, flow nozzles (with or without orifice flange) or Venturi nozzles are used.

get priceSep 09, 2019· The pipe Rd limitations have the same effect on the Universal Venturi Tube except that the minimum pipe Rd for the Universal Venturi Tube is 80,000, which means the flow rate can be quite a bit lower than the classical, yet still maintain the standard +/-0.5 percent accuracy that is the standard accuracy for the Universal Venturi Tube.

get priceThe discharge coefficient is a dimensionless number used to characterise the flow and pressure loss behaviour of nozzles and orifices in fluid systems. Orifices and nozzles are typically used to deliberately reduce pressure, restrict flow or to measure flow rate. This article gives typical values of the discharge coefficient for common orifice and nozzle designs.

get priceFigure 4 shows the comparison of the flow rate to the discharge coefficient for both the venturi and orifice meters. The discharge coefficient increase as the flow rate increases for both the venturi and orifice meters. As expected, the discharge coefficient for the venturi was around 1.0 and 0.6 for the orifice.

get priceVenturi Nozzle. The CPA Venturi Nozzle is a differential pressure measurement device consisting of a converging inlet, a cylindrical throat, and an expanding diffuser cone outlet. It is very similar to a CPA Flow Nozzle, but with a diffuser cone added to reduce the permanent pressure drop of the nozzle.

get price3. Differential Head Flowmeters . This class of flowmeters includes venturi, nozzle, and orifice meters. When properly installed and used, these meters have a potential accuracy of "1 percent. These meters have no moving parts but use the principle of accelerating flow …

get pricelow flow rates, the Bellows meter. Inferential (Rate Meters) - (a) Orifice Plates - The most commonly used rate or inferential meter is the thin-plate, concentric orifice; a detailed discussion is covered in later paragraphs. (b) Flow Nozzles & Venturi Tubes - Flow Nozzles and Venturi Tubes are primary rate devices which will handle about 60%

get priceJan 22, 2018· Meter and orifice calculations are performed in PIPE-FLO ® in accordance to the following standards: ASME MFC-3M-2004 Measurement of Fluid Flow in Pipes Using Orifice, Nozzle, and Venturi, as well as ASME MFC-14M-2003 Small Bore Precision Orifice Meters.

get priceJul 01, 2011· The pressure difference before and after the orifice tells the rate of flow of the fluid. This is actually a special case of Venturi meter and cause more energy losses than Venturi meter. These orifice plates are cheap and easy to install in almost any application.

get priceOrifice plates, flow nozzles, Venturi tubes, cone and wedge meters (fluids.flow_meter)¶ fluids.flow_meter.C_Reader_Harris_Gallagher (D, Do, rho, mu, m, taps='corner') [source] ¶. Calculates the coefficient of discharge of the orifice based on the geometry of the plate, measured pressures of the orifice, mass flow rate through the orifice, and the density and viscosity of the fluid.

get priceThe principle of the method of measurement is based on the installation of a Venturi tube into a pipeline in which a fluid is running full. In a Venturi tube a static pressure difference exists between the upstream section and the throat section of the device.

get priceAn orifice meter is a conduit and a restriction to create a pressure drop. An hour glass is a form of orifice. A nozzle, venturi or thin sharp edged orifice can be used as the flow restriction. In order to use any of these devices for measurement …

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