00:01
We'll be looking at analysis of control volume using energy.
00:05
I want to consider the principle of operation of different flow meters.
00:10
Now we have, for instance, rotameter, meter, it applies float.
00:24
It applies, okay? it applies float.
00:45
Okay? to lift.
00:46
So it applies float which is lifted to an equilibrium position as volumetric, which is which is lifted, okay? as volumetric flow increases to measure flow, which can be red, okay, which can be read from a scale.
01:33
So it applies float, which is lifted to an equilibrium position.
01:36
As volumetric flow increases it is actually actually a variable it's a variable variable area meter okay so it applies a float which is liquid metric volumetric of flow increases and of course as it is lifted because of the area of the cross -sectional area of the pie that is increasing upward the pressure also increases okay that direction so it's lifted to an to an equilibrium position then it can be red the blue can be red equivalent okay so an equilibrium position not equivalent equilibrium position okay it is suitable for liquid and gases.
03:16
Suitable for major flow rates for liquid and gases.
03:35
All right.
03:36
So that's that.
03:37
We have, then we also have what we call the turbine flow meter, turbine flow meter.
04:06
Now, flow through the turbine flow meter, causes is to rotate.
04:14
Causes it flow causes through this turbine flow through it okay causes rotation of the turbine rotation of the turbine or the turbine or whatever okay what's rotation of the turbine of the turbine of the turbine and the speed of rotation is proportional after the flow velocity and the speed rotation is proportional to flow velocity to flow velocity okay to the flow to the flow velocity okay so which of which flow can be correlated and red and measured okay it is suitable for liquids thermalometers.
06:35
Thermal flow meters.
06:46
Okay.
06:48
Temperature difference between two points.
06:52
It applies, it applies temperature difference, okay? it's temperature difference between two points...