{"id":792,"date":"2017-04-15T23:16:19","date_gmt":"2017-04-15T21:16:19","guid":{"rendered":"http:\/\/www.inst-sim.com\/1\/?p=792"},"modified":"2022-05-02T23:24:03","modified_gmt":"2022-05-02T21:24:03","slug":"5-types-of-flow-meters","status":"publish","type":"post","link":"https:\/\/www.inst-sim.com\/1\/flow\/5-types-of-flow-meters\/","title":{"rendered":"\u062e\u0645\u0633\u0629 \u0623\u0646\u0648\u0627\u0639 \u0631\u0626\u064a\u0633\u064a\u0629 \u0645\u0646 \u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 Types of Flow Meters"},"content":{"rendered":"

<\/h3>\n

 <\/p>\n

\u0645\u0642\u062f\u0645\u0629 Introduction<\/span><\/h3>\n

 <\/p>\n\n\n\n\n
\n

\u0642\u064a\u0627\u0633 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 Flow<\/span> \u0623\u0645\u0631 \u0628\u0627\u0644\u063a \u0627\u0644\u0623\u0647\u0645\u064a\u0629\u060c \u0648\u062e\u0627\u0635\u0629 \u0641\u064a \u0627\u0644\u0645\u0646\u0634\u0622\u062a \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629\u060c \u062d\u064a\u062b \u064a\u0645\u0643\u0646\u0647 \u062a\u062d\u062f\u064a\u062f \u0627\u0644\u0631\u0628\u062d \u0623\u0648 \u0627\u0644\u062e\u0633\u0627\u0631\u0629 \u0644\u0644\u0634\u0631\u0643\u0629 . \u0648\u062c\u0647\u0627\u0632 \u0642\u064a\u0627\u0633 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u0647\u0648 \u062c\u0647\u0627\u0632 \u064a\u0633\u062a\u062e\u062f\u0645 \u0644\u0642\u064a\u0627\u0633 \u0645\u0639\u062f\u0644 \u0627\u0644\u062a\u062f\u0641\u0642 \u0623\u0648 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 Flow Rate<\/span> (\u0627\u0644\u062d\u062c\u0645\u064a Volumetric<\/span> \u0623\u0648 \u0627\u0644\u0643\u062a\u0644\u0629 Mass)<\/span> \u0623\u0648 \u0643\u0645\u064a\u0629 \u0627\u0644\u0645\u0648\u0627\u0626\u0639 \u0627\u0644\u0645\u0627\u0631\u0629 \u0639\u0628\u0631 \u0645\u0627\u0633\u0648\u0631\u0629 \u0623\u0648 \u0623\u0646\u0628\u0648\u0628 Pipe<\/span> .<\/span><\/p>\n

 <\/td>\n<\/tr>\n

Measuring a flow is critical, especially in industrial plants, where it can define the profit or loss of company. A flow meter is a device used to measure flow rate (volumetric or mass) or the quantity of fluids passing through a pipe.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

\u0645\u0627 \u0647\u0648 \u0627\u0644\u063a\u0631\u0636 \u0645\u0646 \u062c\u0647\u0627\u0632 \u0642\u064a\u0627\u0633 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u061f<\/span><\/h3>\n

 <\/p>\n\n\n\n\n
\n

\u064a\u064f\u0633\u062a\u062e\u062f\u0627\u0645 \u062c\u0647\u0627\u0632 \u0642\u064a\u0627\u0633 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0643\u062b\u064a\u0631\u0629 \u0648\u0645\u062a\u0646\u0648\u0639\u0629 \u0644\u0642\u064a\u0627\u0633 \u0645\u0639\u062f\u0644 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u0627\u0644\u062d\u062c\u0645\u064a Volumetric Flow Rate<\/span> \u0623\u0648 \u0633\u0631\u064a\u0627\u0646 \u0627\u0644\u0643\u062a\u0644\u0629 Mass Flow Rate<\/span> . \u064a\u062d\u062f\u062f \u0627\u0644\u062a\u0637\u0628\u064a\u0642 \u0646\u0648\u0639 \u0648\u0633\u0639\u0629 \u062c\u0647\u0627\u0632 \u0642\u064a\u0627\u0633 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 . \u064a\u062a\u0645 \u0642\u064a\u0627\u0633 \u0627\u0644\u0645\u0648\u0627\u0626\u0639 \u0648\u0627\u0644\u063a\u0627\u0632\u0627\u062a \u0648\u0627\u0644\u0633\u0648\u0627\u0626\u0644\u00a0 \u0628\u0645\u0639\u062f\u0644 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u0627\u0644\u062d\u062c\u0645\u064a Volumetric Flow Rate<\/span> \u0623\u0648 \u0633\u0631\u064a\u0627\u0646 \u0627\u0644\u0643\u062a\u0644\u0629 Mass Flow Rate<\/span> . \u0648\u064a\u0631\u062a\u0628\u0637 \u0643\u0644\u0627\u0647\u0645\u0627 \u0628\u0643\u062b\u0627\u0641\u0629 \u0627\u0644\u0645\u0627\u062f\u0629 \u0645\u0639 \u0645\u0639\u062f\u0644 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u0627\u0644\u062d\u062c\u0645\u064a \u0627\u0644\u0630\u064a \u064a\u064f\u0634\u0627\u0631 \u0625\u0644\u064a\u0647 \u0628\u0627\u0644\u0631\u0648\u0645\u0632 Q<\/span> \u0648 \u0633\u0631\u064a\u0627\u0646 \u0627\u0644\u0643\u062a\u0644\u0629 Mass Flow Rate<\/span> \u00a0\u0628\u0627\u0644\u0631\u0645\u0632 \u1e41<\/span> \u0641\u064a \u0627\u0644\u0645\u0639\u0627\u062f\u0644\u0629 :<\/p>\n

\u0645\u0639\u062f\u0644 \u0633\u0631\u064a\u0627\u0646 \u0627\u0644\u0643\u062a\u0644\u0629 = \u0645\u0639\u062f\u0644 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u0627\u0644\u062d\u062c\u0645\u064a \u00d7 \u0627\u0644\u0643\u062b\u0627\u0641\u0629<\/p>\n

\u1e41 = Q x \u03c1<\/span><\/p>\n

 <\/td>\n<\/tr>\n

\n

What is the Purpose of a Flow Meter?<\/strong><\/p>\n

A flow meter is used in different types of applications to measure the volumetric flowrate or mass flowrate. The specific application defines the type and capacity of the flow meter. Fluids, gases and liquids, are measured in terms of volumetric flowrate and mass flowrate. Both are related to material’s density with volumetric flowrate denoted by Q and mass flowrate by \u1e41 in the equation \u1e41=Q x \u03c1.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

 <\/p>\n

\u0645\u0627 \u0647\u064a \u0627\u0644\u0623\u0646\u0648\u0627\u0639 \u0627\u0644\u0645\u062e\u062a\u0644\u0641\u0629 \u0644\u0623\u062c\u0647\u0632\u0629 \u0642\u064a\u0627\u0633 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u061f<\/span><\/h3>\n

 <\/p>\n\n\n\n\n
\n

\u0647\u0646\u0627\u0643 \u0623\u0646\u0648\u0627\u0639 \u0639\u062f\u064a\u062f\u0629 \u0645\u0646 \u0623\u062c\u0647\u0632\u0629 \u0642\u064a\u0627\u0633 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u0648\u062a\u062e\u062a\u0644\u0641 \u0628\u0627\u062e\u062a\u0644\u0627\u0641 \u0627\u0644\u062a\u0637\u0628\u064a\u0642 \u060c \u0648\u0627\u0644\u0645\u0627\u0626\u0639 \u0648 \u0627\u0644\u062a\u0631\u0643\u064a\u0628 \u0645\u062a\u0636\u0645\u0646\u0627 \u0645\u0648\u0627\u062f \u062a\u0635\u0646\u064a\u0639 \u0627\u0644\u062c\u0647\u0627\u0632 .<\/p>\n

\u0627\u0644\u0623\u0646\u0648\u0627\u0639 \u0627\u0644\u062e\u0645\u0633\u0629 \u0645\u0646 \u0623\u062c\u0647\u0632\u0629 \u0642\u064a\u0627\u0633 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u0647\u064a :<\/p>\n

 <\/td>\n<\/tr>\n

\n

What are the Different Kinds of Flow Meters?<\/strong><\/p>\n

There are numerous types of flow meters depending upon the application, the specific fluid and the construction, including materials, of the flow meter. The 5 basic classification of flow meters include:<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

 <\/p>\n

1- \u0623\u062c\u0647\u0632\u0629 \u0641\u0631\u0642 \u0627\u0644\u0636\u063a\u0637 \u0644\u0642\u064a\u0627\u0633 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 Differential Pressure Flow Meters<\/span><\/h3>\n

 <\/p>\n\n\n\n\n
\n

\u0623\u062c\u0647\u0632\u0629 \u0641\u0631\u0642 \u0627\u0644\u0636\u063a\u0637 \u0644\u0642\u064a\u0627\u0633 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u062a\u0642\u0648\u0645 \u0628\u0642\u064a\u0627\u0633 \u0641\u0631\u0642 \u0627\u0644\u0636\u063a\u0637 \u0639\u0644\u064a \u062c\u0627\u0646\u0628\u064a \u062b\u0642\u0628 \u0623\u0648 \u0641\u0648\u0647\u0629 Orifice<\/span> \u062d\u064a\u062b \u064a\u062a\u0646\u0627\u0633\u0628 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u0637\u0631\u062f\u064a\u0627\u064b \u0645\u0639 \u0627\u0644\u062c\u0630\u0631 \u0627\u0644\u062a\u0631\u0628\u064a\u0639\u064a \u0644\u0641\u0631\u0642 \u0627\u0644\u0636\u063a\u0637 \u0627\u0644\u0646\u0627\u062a\u062c . \u0648\u064a\u062d\u062a\u0648\u064a \u0627\u0644\u062c\u0647\u0627\u0632 \u0639\u0644\u064a \u0639\u0646\u0627\u0635\u0631 \u0623\u0648\u0644\u064a\u0629 Primary Elements<\/span> \u0648 \u0623\u062e\u0631\u064a \u062b\u0627\u0646\u0648\u064a\u0629 Secondary Elements<\/span> . \u0648\u0645\u0647\u0645\u0629 \u0627\u0644\u0639\u0646\u0635\u0631 \u0627\u0644\u0623\u0648\u0644\u064a Primary Element<\/span> \u0647\u0648 \u062a\u0643\u0648\u064a\u0646 \u0641\u0631\u0642 \u0636\u063a\u0637 \u0639\u0644\u064a \u062c\u0627\u0646\u0628\u064a\u0647 \u0648\u0642\u062f \u064a\u0643\u0648\u0646 \u0639\u0628\u0627\u0631\u0629 \u0639\u0646 \u0641\u0648\u0647\u0629 Flow Nozzle<\/span> \u0623\u0648 \u0623\u0646\u0628\u0648\u0628 \u0628\u064a\u062a\u0648\u062a Pitot Tube<\/span> \u0623\u0648 \u0642\u0631\u0635 \u0645\u062b\u0642\u0648\u0628 Orifice Plate<\/span> \u0623\u0648 \u062c\u0647\u0627\u0632 \u0641\u064a\u0646\u0634\u0648\u0631\u064a Venturi<\/span> . \u0628\u064a\u0646\u0645\u0627 \u062a\u0643\u0648\u0646 \u0645\u0647\u0645\u0629 \u0627\u0644\u0639\u0646\u0635\u0631 \u0627\u0644\u062b\u0627\u0646\u0648\u064a Secondary Element<\/span> \u0642\u064a\u0627\u0633 \u0641\u0631\u0642 \u0627\u0644\u0636\u063a\u0637 \u0647\u0630\u0627 \u0648\u062a\u062d\u0648\u064a\u0644\u0647 \u0625\u0644\u064a \u0625\u0634\u0627\u0631\u0629 Signal<\/span> .<\/p>\n

\u062a\u0645\u062b\u0644 \u0623\u062c\u0647\u0632\u0629 \u0641\u0631\u0642 \u0627\u0644\u0636\u063a\u0637 \u0644\u0642\u064a\u0627\u0633 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u062e\u064f\u0645\u0633 ( 1 \u0625\u0644\u064a 5 ) \u0623\u062c\u0647\u0632\u0629 \u0642\u064a\u0627\u0633 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u0627\u0644\u0645\u0633\u062a\u062e\u062f\u0645\u0629 \u062d\u0648\u0644 \u0627\u0644\u0639\u0627\u0644\u0645\u00a0 . \u0648\u0639\u0627\u062f\u0629 \u0645\u0627 \u062a\u0633\u062a\u062e\u062f\u0645 \u0641\u064a \u0635\u0646\u0627\u0639\u0629 \u0627\u0644\u0646\u0641\u0637 \u0648\u0627\u0644\u063a\u0627\u0632\u060c \u062c\u0646\u0628\u0627 \u0625\u0644\u0649 \u062c\u0646\u0628 \u0645\u0639 \u0648\u062d\u062f\u0627\u062a \u0627\u0644\u062a\u0643\u064a\u064a\u0641 \u0627\u0644\u0645\u0631\u0643\u0632\u064a \u0648\u0645\u0635\u0627\u0646\u0639 \u0627\u0644\u0645\u0634\u0631\u0648\u0628\u0627\u062a \u0648\u0645\u062d\u0637\u0627\u062a \u0627\u0644\u0645\u064a\u0627\u0647 \u0648\u0645\u0635\u0627\u0646\u0639 \u0627\u0644\u0623\u062f\u0648\u064a\u0629 \u0648\u0641\u064a \u0645\u062c\u0627\u0644 \u0627\u0644\u062a\u0639\u062f\u064a\u0646 \u0648\u0635\u0646\u0627\u0639\u0629 \u0627\u0644\u0648\u0631\u0642 \u0648\u0643\u0630\u0644\u0643 \u0641\u064a \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0627\u0644\u0643\u064a\u0645\u064a\u0627\u0626\u064a\u0629 .<\/p>\n

 <\/td>\n<\/tr>\n

\n

Differential pressure flow meters measure the differential pressure across an orifice where flow is directly related to the square root of the differential pressure produced. There are also primary and secondary elements in differential flow meters. The primary element produces change in kinetic energy using either flow nozzle, pitot tube, orifice plate, or venturi flow meters. The secondary element measures the differential pressure and provides the signal.<\/p>\n

Differential pressure meters represent around 1\/5 of all flow meters around the world. They are commonly used in the oil & gas industry, along with HVAC, beverage, water, pharma, mining, paper and chemical applications.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

<\/p>\n

\u0634\u0643\u0644 \u0631\u0642\u0645 (1) : \u0645\u062d\u0627\u0643\u0627\u0629 \u0645\u062a\u062d\u0631\u0643\u0629 \u062a\u0628\u064a\u0646 \u0641\u0643\u0631\u0629 \u0639\u0645\u0644 \u0623\u062c\u0647\u0632\u0629 \u0641\u0631\u0642 \u0627\u0644\u0636\u063a\u0637 \u0644\u0642\u064a\u0627\u0633 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 Differential Pressure Flow Meters<\/span><\/p>\n

 <\/p>\n

<\/p>\n

\u0634\u0643\u0644 \u0631\u0642\u0645 (2) : \u0646\u0645\u0627\u0630\u062c \u0645\u0646 \u0627\u0644\u0639\u0646\u0627\u0635\u0631 \u0627\u0644\u0623\u0648\u0644\u064a\u0629 Primary Elements <\/span><\/p>\n

 <\/p>\n

*********************************<\/p>\n

 <\/p>\n

2- \u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u0625\u0632\u0627\u062d\u0629 \u0627\u0644\u0645\u0648\u062c\u0628\u0629 \u0644\u0642\u064a\u0627\u0633 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 Positive Displacement Flow Meters<\/span><\/h3>\n

 <\/p>\n\n\n\n\n
\n

\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u0625\u0632\u0627\u062d\u0629 \u0627\u0644\u0645\u0648\u062c\u0628\u0629 \u0644\u0642\u064a\u0627\u0633 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 Positive displacement PD<\/span> \u062a\u0642\u064a\u0633 \u062d\u062c\u0645 \u0641\u0631\u0627\u063a \u0645\u0645\u062a\u0644\u0626 \u0628\u0627\u0644\u0633\u0627\u0626\u0644 \u060c \u062b\u0645 \u062a\u0641\u0631\u064a\u063a\u0647 \u0648\u062a\u0639\u064a\u062f \u0645\u0644\u0626\u0647 \u0645\u0646 \u062c\u062f\u064a\u062f \u060c \u0648\u0628\u0627\u0644\u062a\u0627\u0644\u064a \u064a\u062a\u0645 \u062d\u0633\u0627\u0628 \u0643\u0645\u064a\u0629 \u0627\u0644\u0633\u0627\u0626\u0644 \u0627\u0644\u0630\u064a \u062a\u0645 \u0646\u0642\u0644\u0647 \u0639\u0628\u0627\u0631 \u0627\u0644\u062c\u0647\u0627\u0632 . \u0648\u0647\u0630\u0627 \u0627\u0644\u0646\u0648\u0639 \u0645\u0646 \u0627\u0644\u0623\u062c\u0647\u0632\u0629 \u064a\u0642\u064a\u0633 \u0642\u064a\u0645\u0629 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u0627\u0644\u0641\u0639\u0644\u064a\u0629 \u0639\u0643\u0633 \u0627\u0644\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u0623\u062e\u0631\u064a \u0648\u0627\u0644\u062a\u064a \u062a\u0642\u064a\u0633 \u0628\u0639\u0636 \u0627\u0644\u0645\u062a\u063a\u064a\u0631\u0627\u062a \u0627\u0644\u0641\u064a\u0632\u064a\u0627\u0626\u064a\u0629 \u0648\u062a\u062d\u0648\u0644\u0647\u0627 \u0625\u0644\u064a \u0645\u0639\u062f\u0644 \u0633\u0631\u064a\u0627\u0646 Flow Rate<\/span> . \u0641\u062e\u0631\u062c \u062c\u0647\u0627\u0632 \u0627\u0644\u0625\u0632\u0627\u062d\u0629 \u0627\u0644\u0645\u0648\u062c\u0628\u0629 \u064a\u0639\u0628\u0631 \u0645\u0628\u0627\u0634\u0631\u0629 \u0639\u0646 \u0642\u064a\u0645\u0629 \u062d\u062c\u0645 \u0627\u0644\u0645\u0627\u0626\u0639 \u0627\u0644\u0630\u064a \u0645\u0631 \u0639\u0628\u0631 \u0627\u0644\u062c\u0647\u0627\u0632 . \u0648\u0645\u0646 \u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u0625\u0632\u0627\u062d\u0629 \u0627\u0644\u0645\u0648\u062c\u0628\u0629 \u060c \u0627\u0644\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u0645\u0643\u0628\u0633\u064a\u0629 Piston Meters<\/span> \u0648\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u062a\u0631\u0648\u0633 \u0627\u0644\u0628\u064a\u0636\u0627\u0648\u064a\u0629 Oval-Gear Meters<\/span> \u0648\u062c\u0647\u0627\u0632 \u0627\u0644\u0642\u0631\u0635 \u0627\u0644\u0645\u063a\u0632\u0644\u064a Nutating Disk Meters<\/span> \u0648 \u062c\u0647\u0627\u0632 \u0627\u0644\u0631\u064a\u0634\u0629 \u0627\u0644\u062f\u0648\u0627\u0631\u0629 Rotary Vane Type Meters<\/span> \u0648\u063a\u064a\u0631\u0647\u0627 \u0645\u0646 \u0627\u0644\u0623\u062c\u0647\u0632\u0629 .<\/p>\n

 <\/td>\n<\/tr>\n

\n

Positive displacement (PD) flow meters measure the volume filled with fluid, deliver it ahead and fill it again, which calculates the amount of fluid transferred. It measures actual flow of any fluid while all other types of flow meters measure some other parameter and convert the values into flowrate. In PD flow meters, output is directly related to the volume passing through the flow meter. PD flow meters include piston meters, oval-gear meters, nutating disk meters, rotary vane type meters, etc.<\/p>\n

 <\/p>\n

Positive displacement flow meters are known for their accuracy. They are commonly used in the transfer of oils and fluids, like gasoline, hydraulic fluids as well as in-home use for water and gas applications.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

\"\"<\/p>\n

\u0634\u0643\u0644 \u0631\u0642\u0645 (3) : \u0645\u062d\u0627\u0643\u0627\u0629 \u0645\u062a\u062d\u0631\u0643\u0629 \u0644\u0646\u0645\u0648\u0630\u062c \u0644\u0623\u062d\u062f \u0627\u0644\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u0645\u0643\u0628\u0633\u064a\u0629 Piston Meters \u0644\u0642\u064a\u0627\u0633 \u0627\u0644\u0633\u0631\u064a\u0627\u0646<\/span><\/p>\n

 <\/p>\n

\"\"<\/p>\n

\u0634\u0643\u0644 \u0631\u0642\u0645 (4) : \u0645\u062d\u0627\u0643\u0627\u0629 \u0645\u062a\u062d\u0631\u0643\u0629 \u062a\u0628\u064a\u0646 \u0641\u0643\u0631\u0629 \u0639\u0645\u0644 \u062c\u0647\u0627\u0632 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u0630\u0648 \u0627\u0644\u062a\u0631\u0648\u0633 \u0627\u0644\u0628\u064a\u0636\u0627\u0648\u064a\u0629 Oval-Gear Meter<\/span><\/p>\n

 <\/p>\n

\"\"<\/p>\n

\u0634\u0643\u0644 \u0631\u0642\u0645 (5) : \u0645\u062d\u0627\u0643\u0627\u0629 \u0645\u062a\u062d\u0631\u0643\u0629 \u062a\u0628\u064a\u0646 \u0641\u0643\u0631\u0629 \u0639\u0645\u0644 \u062c\u0647\u0627\u0632 \u0627\u0644\u0642\u0631\u0635 \u0627\u0644\u0645\u062a\u0631\u0646\u062d Nutating Disk Meters
\n<\/span><\/p>\n

*<\/p>\n

\u0644\u0642\u0631\u0627\u0621\u0629 \u0645\u0648\u0636\u0648\u0639 \u0648\u0634\u0631\u062d \u0644\u062c\u0647\u0627\u0632\u00a0\u0627\u0644\u0642\u0631\u0635 \u0627\u0644\u0645\u062a\u0631\u0646\u062d Nutating Disk Flow Meter<\/span> \u0642\u0645 \u0628\u0627\u0644\u0636\u063a\u0637 \u0639\u0644\u064a \u0627\u0644\u0631\u0627\u0628\u0637 \u0627\u0644\u062a\u0627\u0644\u064a :<\/p>\n

 <\/p>\n

\u062c\u0647\u0627\u0632 \u0627\u0644\u0642\u0631\u0635 \u0627\u0644\u0645\u062a\u0631\u0646\u062d Nutating Disk Flow Meter<\/a><\/span><\/h3>\n

*<\/p>\n

 <\/p>\n

\"\"<\/p>\n

\u0634\u0643\u0644 \u0631\u0642\u0645 (6) : \u0645\u062d\u0627\u0643\u0627\u0629 \u0645\u062a\u062d\u0631\u0643\u0629 \u062a\u0628\u064a\u0646 \u0641\u0643\u0631\u0629 \u0639\u0645\u0644 \u062c\u0647\u0627\u0632 \u0627\u0644\u0631\u064a\u0634\u0629 \u0627\u0644\u062f\u0648\u0627\u0631\u0629 Rotary Vane Type Meter<\/span><\/p>\n

 <\/p>\n

************************************<\/p>\n

 <\/p>\n

3- \u0623\u062c\u0647\u0632\u0629 \u0642\u064a\u0627\u0633 \u0627\u0644\u0633\u0631\u0639\u0629 Velocity Flow Meters<\/span><\/h3>\n

 <\/p>\n\n\n\n\n
\n

\u0623\u062c\u0647\u0632\u0629 \u0642\u064a\u0627\u0633 \u0627\u0644\u0633\u0631\u0639\u0629 Velocity Flow Meters<\/span> \u062a\u0642\u064a\u0633 \u0633\u0631\u0639\u0629 \u0627\u0644\u062a\u062f\u0641\u0642 \u0648\u0645\u0646\u0647\u0627 \u062a\u062d\u0633\u0628 \u0645\u0639\u062f\u0644 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u0627\u0644\u062d\u062c\u0645\u064a Volumetric Flow Rate<\/span> . \u0648\u062a\u0643\u0648\u0646 \u062d\u0633\u0627\u0633\u064a\u0629 \u062a\u0644\u0643 \u0627\u0644\u0623\u062c\u0647\u0632\u0629 \u0623\u0642\u0644 \u0639\u0646\u062f\u0645\u0627 \u064a\u0643\u0648\u0646 \u0639\u062f\u062f \u0631\u064a\u0646\u0648\u0644\u062f\u0632 Reynolds Number<\/span> \u0644\u0644\u0633\u0627\u0626\u0644 \u0623\u0639\u0644\u064a \u0645\u0646 10000 . \u0645\u0646 \u0623\u062c\u0647\u0632\u0629 \u0642\u064a\u0627\u0633 \u0627\u0644\u0633\u0631\u0639\u0629 \u0627\u0644\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u062a\u0648\u0631\u0628\u064a\u0646\u064a\u0629 Turbine<\/span> \u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u0639\u062c\u0644\u0629 \u0627\u0644\u0628\u062f\u0627\u0644\u0629 Paddlewheel<\/span> \u0648\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u062f\u0648\u0627\u0645\u0627\u062a Vortex Shedding<\/span> \u0648\u0627\u0644\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u0643\u0647\u0631\u0645\u063a\u0646\u0627\u0637\u064a\u0633\u064a\u0629 Electromagnetic<\/span> \u0648\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u0627\u0644\u0635\u0648\u062a\u064a\u0629\/\u0641\u0648\u0642 \u0627\u0644\u0635\u0648\u062a\u064a\u0629 Sonic\/Ultrasonic<\/span> .<\/p>\n

 <\/td>\n<\/tr>\n

Velocity meters measure velocity of the stream to calculate the volumetric flowrate. These are less sensitive when the Reynolds number of fluid is higher than 10000. Velocity flow meters include turbine, paddlewheel, vortex shedding, electromagnetic and sonic\/ultrasonic flow meters.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

\"\"<\/p>\n

\u0634\u0643\u0644 \u0631\u0642\u0645 (7) : \u0645\u062d\u0627\u0643\u0627\u0629 \u0645\u062a\u062d\u0631\u0643\u0629 \u062a\u0628\u064a\u0646 \u0641\u0643\u0631\u0629 \u0639\u0645\u0644 \u0627\u0644\u062c\u0647\u0627\u0632 \u0627\u0644\u062a\u0648\u0631\u0628\u064a\u0646\u064a \u0644\u0642\u064a\u0627\u0633 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 Turbine Flow Meter
\n<\/span><\/p>\n

 <\/p>\n

\"\"<\/p>\n

\u0634\u0643\u0644 \u0631\u0642\u0645 (8) : \u0645\u062d\u0627\u0643\u0627\u0629 \u0645\u062a\u062d\u0631\u0643\u0629 \u062a\u0628\u064a\u0646 \u0641\u0643\u0631\u0629 \u0639\u0645\u0644 \u062c\u0647\u0627\u0632 \u0627\u0644\u0639\u062c\u0644\u0629 \u0627\u0644\u0628\u062f\u0627\u0644\u0629 Paddlewheel
\n<\/span><\/p>\n

 <\/p>\n

\"\"<\/p>\n

\u0634\u0643\u0644 \u0631\u0642\u0645 (9) : \u0645\u062d\u0627\u0643\u0627\u0629 \u0645\u062a\u062d\u0631\u0643\u0629 \u062a\u0628\u064a\u0646 \u0641\u0643\u0631\u0629 \u0639\u0645\u0644 \u062c\u0647\u0627\u0632 \u0627\u0644\u062f\u0648\u0627\u0645\u0627\u062a Vortex Flow Meter
\n<\/span><\/p>\n

.<\/p>\n

\"\"<\/a><\/p>\n

\u0634\u0643\u0644 \u0631\u0642\u0645 (10) : \u0645\u0643\u0648\u0646\u0627\u062a \u062c\u0647\u0627\u0632 \u0642\u064a\u0627\u0633 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u0627\u0644\u0643\u0647\u0631\u0648\u0645\u063a\u0646\u0627\u0637\u064a\u0633\u064a Electromagnetic Flow Meter
\n<\/span><\/p>\n

.<\/p>\n

\u0644\u0644\u0645\u0632\u064a\u062f<\/p>\n

\u0645\u0646 \u0627\u0644\u062a\u0641\u0627\u0635\u064a\u0644 \u0639\u0646\u00a0\u062c\u0647\u0627\u0632 \u0642\u064a\u0627\u0633 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u0627\u0644\u0643\u0647\u0631\u0648\u0645\u063a\u0646\u0627\u0637\u064a\u0633\u064a Electromagnetic Flow Meter<\/span> \u0627\u0636\u063a\u0637 \u0639\u0644\u064a \u0631\u0627\u0628\u0637 \u0627\u0644\u0645\u0642\u0627\u0644 \u0627\u0644\u062a\u0627\u0644\u064a:<\/p>\n

\u062c\u0647\u0627\u0632 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u0627\u0644\u0645\u063a\u0646\u0627\u0637\u064a\u0633\u064a Magnetic Flow Meter<\/a><\/span><\/h3>\n

.<\/p>\n

\"\"<\/p>\n

\u0634\u0643\u0644 \u0631\u0642\u0645 (10) : \u0645\u062d\u0627\u0643\u0627\u0629 \u0645\u062a\u062d\u0631\u0643\u0629 \u062a\u0628\u064a\u0646 \u0641\u0643\u0631\u0629 \u0639\u0645\u0644 \u062c\u0647\u0627\u0632 \u0627\u0644\u0645\u0648\u062c\u0627\u062a \u0641\u0648\u0642 \u0627\u0644\u0635\u0648\u062a\u064a\u0629 Ultrasonic<\/span><\/p>\n

 <\/p>\n

************************************<\/p>\n

 <\/p>\n

4- \u0623\u062c\u0647\u0632\u0629 \u0642\u064a\u0627\u0633 \u0643\u062a\u0644\u0629\u00a0 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 Mass Flow Meter<\/span><\/h3>\n

 <\/p>\n\n\n\n\n
\n

\u0623\u062c\u0647\u0632\u0629 \u0642\u064a\u0627\u0633 \u0643\u062a\u0644\u0629\u00a0 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 Mass Flow Meters<\/a> \u0623\u0643\u062b\u0631 \u0641\u0627\u0639\u0644\u064a\u0629 \u0641\u064a \u0627\u0644\u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u0625\u0646\u062a\u0627\u062c\u064a\u0629 \u0630\u0627\u062a \u0627\u0644\u0639\u0644\u0627\u0642\u0629 \u0628\u0627\u0644\u0643\u062a\u0644\u0629 Mass<\/span> \u062d\u064a\u062b \u062a\u0642\u064a\u0633 \u0627\u0644\u0642\u0648\u0629 \u0627\u0644\u0646\u0627\u062a\u062c\u0629 \u0639\u0646 \u062a\u0633\u0627\u0631\u0639 \u0627\u0644\u0643\u062a\u0644\u0629 . \u0648\u0628\u0634\u0643\u0644 \u0623\u0643\u062b\u0631 \u062a\u062d\u062f\u064a\u062f\u0627\u060c \u064a\u062a\u0645 \u0642\u064a\u0627\u0633 \u0627\u0644\u0642\u0648\u0629 \u0639\u0646\u062f \u062a\u062d\u0631\u0643 \u0627\u0644\u0643\u062a\u0644\u0629 \u0644\u0643\u0644 \u0648\u062d\u062f\u0629 \u0645\u0646 \u0627\u0644\u0632\u0645\u0646\u00a0 \u0628\u062f\u0644\u0627 \u0645\u0646 \u0642\u064a\u0627\u0633 \u0627\u0644\u062d\u062c\u0645 \u0644\u0643\u0644 \u0648\u062d\u062f\u0629 \u0645\u0646 \u0627\u0644\u0632\u0645\u0646 . \u0648\u0645\u0646 \u0623\u062c\u0647\u0632\u0629 \u0642\u064a\u0627\u0633 \u0643\u062a\u0644\u0629 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u0639\u062f\u0627\u062f\u0627\u062a \u0643\u0631\u064a\u0648\u0644\u064a\u0633 Coriolis Mass Meters<\/span> \u0648\u062c\u0647\u0627\u0632 \u0627\u0644\u062a\u0634\u062a\u062a \u0627\u0644\u062d\u0631\u0627\u0631\u064a Thermal Dispersion Meters<\/span> .<\/p>\n

 <\/p>\n

\u0648\u062a\u0631\u062a\u0628\u0637 \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0627\u0644\u0646\u0645\u0648\u0630\u062c\u064a\u0629 \u0644\u0623\u062c\u0647\u0632\u0629 \u0633\u0631\u064a\u0627\u0646 \u0627\u0644\u0643\u062a\u0644\u0629 \u0628\u0627\u0644\u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u0643\u064a\u0645\u064a\u0627\u0626\u064a\u0629. \u0628\u0627\u0644\u0625\u0636\u0627\u0641\u0629 \u0625\u0644\u0649 \u0627\u0644\u0635\u0646\u0627\u0639\u0627\u062a \u0627\u0644\u0643\u064a\u0645\u064a\u0627\u0626\u064a\u0629 \u0648\u0627\u0644\u063a\u0627\u0632\u060c \u0648\u0627\u0644\u0635\u0646\u0627\u0639\u0627\u062a \u0627\u0644\u0646\u0645\u0648\u0630\u062c\u064a\u0629 \u0627\u0644\u062a\u064a \u062a\u0633\u062a\u062e\u062f\u0645 \u0647\u0630\u0627 \u0627\u0644\u0646\u0648\u0639 \u0647\u064a \u0635\u0646\u0627\u0639\u0629 \u0627\u0644\u0623\u062f\u0648\u064a\u0629 \u0648\u0645\u062c\u0627\u0644 \u0627\u0644\u0637\u0627\u0642\u0629 \u0648\u0627\u0644\u062a\u0639\u062f\u064a\u0646 \u0648\u0645\u062d\u0637\u0627\u062a \u0645\u064a\u0627\u0647 \u0627\u0644\u0635\u0631\u0641 \u0627\u0644\u0635\u062d\u064a .<\/p>\n

 <\/td>\n<\/tr>\n

\n

Mass flow meters are more effective in mass related processes as they measure the force that results from the acceleration of mass. More specifically, the force is measured as the mass moving per unit of time, instead of the volume per unit of time. Mass flow meters include Coriolis mass meters and thermal dispersion meters.<\/p>\n

 <\/p>\n

Typical applications for mass flow meters are tied to chemical processes. In addition to the chemical and gas industries, typical industries using mass meters include pharma, power, mining and wastewater.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

\"\"<\/p>\n

\u0634\u0643\u0644 \u0631\u0642\u0645 (11) : \u0645\u062d\u0627\u0643\u0627\u0629 \u0645\u062a\u062d\u0631\u0643\u0629 \u062a\u0628\u064a\u0646 \u0641\u0643\u0631\u0629 \u0639\u0645\u0644 \u062c\u0647\u0627\u0632 \u0643\u0631\u064a\u0648\u0644\u064a\u0633 Coriolis Mass Meter
\n<\/span><\/p>\n

 <\/p>\n

\"\"<\/p>\n

\u0634\u0643\u0644 \u0631\u0642\u0645 (12) : \u0645\u062d\u0627\u0643\u0627\u0629 \u0645\u062a\u062d\u0631\u0643\u0629 \u062a\u0628\u064a\u0646 \u0641\u0643\u0631\u0629 \u0639\u0645\u0644 \u062c\u0647\u0627\u0632 \u0627\u0644\u062a\u0634\u062a\u062a \u0627\u0644\u062d\u0631\u0627\u0631\u064a Thermal Dispersion Meter
\n<\/span><\/p>\n

 <\/p>\n

**********************************<\/p>\n

 <\/p>\n

5- \u0623\u062c\u0647\u0632\u0629 \u0642\u064a\u0627\u0633 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u0644\u0644\u0642\u0646\u0648\u0627\u062a \u0627\u0644\u0645\u0641\u062a\u0648\u062d\u0629 Open Channel Flow Meters<\/span><\/h3>\n

 <\/p>\n\n\n\n\n
\n

\u0623\u062c\u0647\u0632\u0629 \u0642\u064a\u0627\u0633 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u0644\u0644\u0642\u0646\u0648\u0627\u062a \u0627\u0644\u0645\u0641\u062a\u0648\u062d\u0629 \u062a\u0634\u0645\u0644 \u0627\u0644\u0634\u0642 V<\/span> \u0623\u0648 \u0645\u0627 \u064a\u0637\u0644\u0642 \u0639\u0644\u064a\u0647 V-notch<\/span> \u0648\u0627\u0644\u0633\u062f\u0648\u062f Weirs<\/span> \u0648\u0627\u0644\u0642\u0646\u0648\u0627\u062a Flumes<\/span> . \u0647\u0630\u0647 \u0627\u0644\u0647\u064a\u0627\u0643\u0644 \u0627\u0644\u0634\u0628\u064a\u0647\u0629 \u0628\u0627\u0644\u0633\u062f \u062a\u0633\u0645\u062d \u0628\u0633\u0631\u064a\u0627\u0646 \u0645\u062d\u062f\u062f \u0623\u0648 \u0633\u0631\u064a\u0627\u0646 \u0645\u0631\u0643\u0632 \u0644\u0644\u0633\u0648\u0627\u0626\u0644 \u0648\u0627\u0639\u062a\u0645\u0627\u062f\u0627 \u0639\u0644\u064a \u0627\u0644\u0634\u0643\u0644 \u0627\u0644\u0641\u0631\u064a\u062f \u0644\u0644\u0647\u064a\u0643\u0644 \u0648\u062d\u062c\u0645\u0647 . \u064a\u0633\u0645\u062d \u0647\u0630\u0627 \u0627\u0644\u0646\u0648\u0639 \u0645\u0646 \u0623\u062c\u0647\u0632\u0629 \u0642\u064a\u0627\u0633 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u0628\u062d\u0633\u0627\u0628 \u0642\u0631\u0627\u0621\u0629 \u0645\u0639\u062f\u0644 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 Flow Rate<\/span> .<\/p>\n

 <\/p>\n

\u0648\u062a\u0634\u0645\u0644 \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0627\u0644\u0634\u0627\u0626\u0639\u0629 \u0644\u0645\u0642\u0627\u064a\u064a\u0633 \u0627\u0644\u0642\u0646\u0648\u0627\u062a \u0627\u0644\u0645\u0641\u062a\u0648\u062d\u0629 \u0627\u0644\u0625\u0633\u062a\u062e\u062f\u0627\u0645 \u0645\u0639 \u0627\u0644\u0633\u0648\u0627\u0626\u0644 \u062d\u0631\u0629 \u0627\u0644\u062a\u062f\u0641\u0642 \u0641\u064a \u0627\u0644\u062c\u062f\u0627\u0648\u0644 Streams<\/span> \u0648\u0627\u0644\u0623\u0646\u0647\u0627\u0631 Rivers<\/span> \u0648\u0642\u0646\u0648\u0627\u062a \u0627\u0644\u0631\u064a \u0648\u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u0635\u0631\u0641 \u0627\u0644\u0635\u062d\u064a \/ \u0645\u064a\u0627\u0647 \u0627\u0644\u0635\u0631\u0641 \u0627\u0644\u0635\u062d\u064a .<\/p>\n

 <\/td>\n<\/tr>\n

\n

Measurement of liquid in open channels includes v-notch, weirs and flumes. These dam-like structures, or overflows, allow for a limited or concentrated free-flow of liquids based on the unique shape and size of the structure. This type of flow meter allows for a reading of the flowrate to be calculated.<\/p>\n

 <\/p>\n

Common applications of open channel meters include free flowing liquids like streams, rivers, irrigation channels and sewer\/watewater systems.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

\"\"<\/p>\n

\u0634\u0643\u0644 \u0631\u0642\u0645 (13) : \u0645\u062d\u0627\u0643\u0627\u0629 \u0645\u062a\u062d\u0631\u0643\u0629 \u062a\u0628\u064a\u0646 \u0641\u0643\u0631\u0629 \u0627\u0644\u0642\u064a\u0627\u0633 \u0641\u064a \u0627\u0644\u0642\u0646\u0648\u0627\u062a \u0627\u0644\u0645\u0641\u062a\u0648\u062d\u0629 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u062d\u0627\u062c\u0632 <\/span><\/p>\n

 <\/p>\n

\u0627\u0644\u0645\u0635\u0627\u062f\u0631<\/span><\/h3>\n

 <\/p>\n\n\n\n
1<\/td>\nhttp:\/\/www.donjohns.com\/blog\/5-types-of-flow-meters\/<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

\u0645\u0635\u0627\u062f\u0631 \u0627\u0644\u0635\u0648\u0631<\/span><\/h3>\n

 <\/p>\n\n\n\n\n\n\n\n\n\n\n\n
\u0634\u0643\u0644 \u0631\u0642\u0645 (1)<\/td>\nhttp:\/\/www.flowmeters.com\/images\/14-big_6.gif<\/td>\n<\/tr>\n
\u0634\u0643\u0644 \u0631\u0642\u0645 (2)<\/td>\nhttp:\/\/www2.emersonprocess.com\/en-US\/brands\/rosemount\/Rosemount-Site-Map\/engineering-guides\/PublishingImages\/chapter-03\/lightbox-images\/figure3-6a.png<\/td>\n<\/tr>\n
\u0634\u0643\u0644 \u0631\u0642\u0645 (3)<\/td>\nhttps:\/\/mir-s3-cdn-cf.behance.net\/project_modules\/disp\/6a319433443157.56ab23be5d714.gif<\/td>\n<\/tr>\n
\u0634\u0643\u0644 \u0631\u0642\u0645 (4)<\/td>\nhttps:\/\/mir-s3-cdn-cf.behance.net\/project_modules\/disp\/c41fa833443157.56ab23be482ab.gif<\/td>\n<\/tr>\n
\u0634\u0643\u0644 \u0631\u0642\u0645 (5)<\/td>\nhttps:\/\/mir-s3-cdn-cf.behance.net\/project_modules\/disp\/88db0e33443157.56ab23be368ec.gif<\/td>\n<\/tr>\n
\u0634\u0643\u0644 \u0631\u0642\u0645 (6)<\/td>\nhttps:\/\/mir-s3-cdn-cf.behance.net\/project_modules\/disp\/075c1233443157.56ab23beb9a7a.gif<\/td>\n<\/tr>\n
\u0634\u0643\u0644 \u0631\u0642\u0645 (7)<\/td>\nhttps:\/\/mir-s3-cdn-cf.behance.net\/project_modules\/disp\/b587ef33443157.56ab23becc6cf.gif<\/td>\n<\/tr>\n
\u0634\u0643\u0644 \u0631\u0642\u0645 (8)<\/td>\n\u00a0http:\/\/www.flowmeters.nl\/files\/image\/91\/PaddleWheel.gif<\/td>\n<\/tr>\n
\u0634\u0643\u0644 \u0631\u0642\u0645 (13)<\/td>\nhttp:\/\/www.conasen.com\/Net111Edit\/UploadFile\/20091013123346584.gif<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

******************************<\/p>\n

\u0627\u0643\u062a\u0645\u0644\u062a \u0627\u0644\u0645\u0642\u0627\u0644\u0629 …..<\/strong><\/p>\n

\u0627\u0636\u063a\u0637 \u0647\u0646\u0627 \u0644\u062a\u062a\u0627\u0628\u0639 \u0635\u0641\u062d\u062a\u0646\u0627 \u0639\u0644\u064a \u0627\u0644\u0641\u064a\u0633 \u0628\u0648\u0643 <\/a>\u0623\u0648 <\/a><\/span><\/p>\n

*****************************<\/strong><\/span><\/p>\n

<\/p>\n

\u0645\u0648\u0627\u0636\u064a\u0639 \u0630\u0627\u062a \u0635\u0644\u0629<\/strong><\/span><\/h3>\n

<\/h3>\n