fisika tabung pitot / pitot tube smakbo 57 2012
TRANSCRIPT
Pitot Tube
Bogor Chemical Analyst Vocational High School2012
Group 4
Nur AzizahNoviani Ester
Nurul Maulida RMuhammad RamadhanEleven One
Definition
Pitot tube is an instrument that use to measure the pressure and flow rate
of fluid (air)
Created ByAn Engineer from France named Henri Pitot in the beginning of 1700 and modified to modern design in the middle of 1800 by France Scientist named Henry Darcy
Henri Pitot
Work Principle
Pitot Tube
With measuring the height differences of mercury in the manometer, the velocity of fluid can be determined in the pitot tube.
P = Pressure (Pa)p = density (kg/m3)
p’ = density Hg (kg/m3)g = gravitation (m/s2)
h = high (m)v = velocity (m/s)
Pitot Tube Formula
APPLICATION
• Measure air speed on the airplane.• Determine the amount of coolant that was in
the room to tell at a hotel.• Determine the speed of the wind in the
tunnel.• Venturimeter with manometer
Pitot Tube ApplicationOne the Application of pitot tube is on the plane’s altimeter. Altimeter’s function is to measure height of one point from the sea surface
Pitot Tube
How to work?Plane’s Altimeter
Sample Question
If air (p = 129 kg/m3) flowed into the pipe pitot, and the difference in height of mercury (pHg = 13.6 g/cm3)
at the manometer 3 cm.Calculate the air flow speed!
Known : p = 129 kg/m3
p’ = 13,6 g/cm3
g = 10m/s2)h = 3 cm
Ask : v…?
Answer :
Conclusion• Pitot tube is an instrument that use to measure the
pressure and flow rate of fluid (air)• The same manometer feet high, then h1 = h2• The air that is flowing at first much smaller tubes,
then v1=0• Has this formula :
Any Question ?