Basic Instrumentation - Measuring or work principle of Vortex flow meter - Instrumentation Training

 Basic Instrumentation - Measuring or work principle of Vortex flow meter - Instrumentation Training 

In my previous video i told about the Measuring principle of Mass flow meter, Now in my todays video i am going to tell the measuring or working principle of Vortex flow meter. 

Basic Instrumentation - Measuring or work principle of Vortex flow meter - Instrumentation Training 

The function of vortex flowmeters is based on the principle of the Karman vortex street. Opposing vortices form behind an object in a stream. The measuring tube contains a bluff body. behind which vortex shedding occurs. The frequency of the vortex shedding is proportional to the flow rate. The shedded vortices are picked up and counted as pressure surges by a piezo crystal in the sensor. Flowrate is calculated by multiplying the area of the pipe times the velocity of the flow.

In some cases, vortex meters require the use of straightening vanes or straight upstream piping to eliminate distorted flow patterns and swirl. Low flowrates present a problem for vortex meters, because they generate vortices irregularly under low flow conditions. The accuracy of vortex meters is from medium to high, depending on model and manufacturer. In addition to liquid and gas flow measurement, vortex flowmeters are widely used to measure steam flow.

Vortex flowmeters are well suited for measuring steam flow, and they are widely used for this purpose. Steam is, arguably, the most difficult fluid to measure. This is due to the high pressure and high temperature of steam, and because the measurement parameters vary with the type of steam. Main types of steam include wet steam, saturated steam, and superheated steam.

In my previous video i told about the Measuring principle of Mass flow meter, Now in my todays video i am going to tell the measuring or working principle of Vortex flow meter.

Do you know the measuring principle of Vortex flow meter?

The function of vortex flowmeters is based on the principle of the Karman vortex street. Opposing vortices form behind an object in a stream. The measuring tube contains a bluff body. behind which vortex shedding occurs. The frequency of the vortex shedding is proportional to the flow rate. The shedded vortices are picked up and counted as pressure surges by a piezo crystal in the sensor. Flowrate is calculated by multiplying the area of the pipe times the velocity of the flow.

In some cases, vortex meters require the use of straightening vanes or straight upstream piping to eliminate distorted flow patterns and swirl. Low flowrates present a problem for vortex meters, because they generate vortices irregularly under low flow conditions. The accuracy of vortex meters is from medium to high, depending on model and manufacturer. In addition to liquid and gas flow measurement, vortex flowmeters are widely used to measure steam flow.

Vortex flowmeters are well suited for measuring steam flow, and they are widely used for this purpose. Steam is, arguably, the most difficult fluid to measure. This is due to the high pressure and high temperature of steam, and because the measurement parameters vary with the type of steam. Main types of steam include wet steam, saturated steam, and superheated steam.

Basic Instrumentation - Measuring or work principle of Vortex flow meter - Instrumentation Training