Hello Endress+Hauser. In the current video it's mentioned flow measurements on chimneys, in this case, how to guarantee that the pressure differential read by the Endress+Hauser device is big enough to beat range of uncertainties of the measurement since Static Pressure in Chimneys are considerably low (like atm low)? I appreciate in advance, thanks!
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Wouldn't it be better if instead of mounting the pitot tube from the top, we mount it by the side so the measured hydrostatic pressure is the same for all openings on the pitot tube? That's not the case if the pitot tube is mounted from the top since the openings that are deeper into the fluid read greater hydrostatic pressure.
Due to the fact that the average Pitot tube principle is based on the measurement of the dynamic pressure on different levels into the pipe and not on the static nor the hydrostatic pressure. Because these both pressures are compensated / eliminated by the openings at the back of the Pitot tube. To establish the dp-flow equation from the Bernoulli equation, the hydrostatic pressure is not taken in consideration. So I do not think that the hydrostatic pressure has an influence in the measurement, at least not in the real world. Maybe in a pure theoretical world.
Just curious and I am not trying to reinvent the wheel but can vacuum offer the same result?. What I mean is to have air speed over an opening facing opposite the direction of the craft's travel that creates a vacuum. It would seem to me a faster speed would create a higher vacuum. If actually feasible this could eliminate the deficiencies of a pressurized unit to have as a back-up.
Basically this is correct. Unfortunately, this will not work as for the measurement we need the difference in pressure before and after the obstacle. If going over a reverse facing opening, you're creating a vacuum which may be not repeatable with different line pressures. But thanks anyway for the idea.
It measures velocity, but with a simple ecuation you can calculate the flow of the fluid in the pipe Q=v*A where A is the cross sectional area of the pipe and Q is the volume flow.
The pressure from the pipe containing gas, steam or liquid is transported via the pitot tube to the membrane of the differential pressure transmitter. Here the membrane is deflected depending on the differential pressure created by the flowrate of the media.
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I always wondered how a Pitot tube works even after taking a fluid mechanics class. Now I know how it works. Thanks to this wonderful video.
♥️♥️♥️Thank you very much! It's so hard to find to-the-point informative videos nowadays without going through those bloody ads, intros and stuff!
how in the actual fuck did someone figure this out in the first place. this is crazy. science is crazy. (and i love it)
that's engineering!
excuse me, please refrain from swearing in a toddler focused environment. Kinda fucking cringe ngl
Thanks for this video it gives me more understanding of how pitot tube works.
it is an averaging pitot tube, formally known as annubar
I think this is an annubar. Pitot tubes do not have multiple holes. That's the only diffrence between pitot tube and annubar.
If you told me that this was a computer generated voice, I'd completely believe you.
Thankyou very much for this video !
Hello Endress+Hauser. In the current video it's mentioned flow measurements on chimneys, in this case, how to guarantee that the pressure differential read by the Endress+Hauser device is big enough to beat range of uncertainties of the measurement since Static Pressure in Chimneys are considerably low (like atm low)? I appreciate in advance, thanks!
For questions like this, please contact our Sales Center at the location nearest to you. You can find the contact information here: www.endress.com/en/contact
Decent explanation for my fluid mechanics exam. It could do with some of the equations used e.g. bernoulli's eqn. maybe in the comments.
I think the front of the probe measures stagnation pressure not dynamic pressure.
This is way better than the oilers game
bernoulli's principle rules the engineering
pitot tube are god send from heaven
Wouldn't it be better if instead of mounting the pitot tube from the top, we mount it by the side so the measured hydrostatic pressure is the same for all openings on the pitot tube? That's not the case if the pitot tube is mounted from the top since the openings that are deeper into the fluid read greater hydrostatic pressure.
Due to the fact that the average Pitot tube principle is based on the measurement of the dynamic pressure on different levels into the pipe and not on the static nor the hydrostatic pressure. Because these both pressures are compensated / eliminated by the openings at the back of the Pitot tube.
To establish the dp-flow equation from the Bernoulli equation, the hydrostatic pressure is not taken in consideration. So I do not think that the hydrostatic pressure has an influence in the measurement, at least not in the real world. Maybe in a pure theoretical world.
excellent work.thank you
it is for measuring the velocity of flow :D
Just curious and I am not trying to reinvent the wheel but can vacuum offer the same result?. What I mean is to have air speed over an opening facing opposite the direction of the craft's travel that creates a vacuum. It would seem to me a faster speed would create a higher vacuum. If actually feasible this could eliminate the deficiencies of a pressurized unit to have as a back-up.
Basically this is correct. Unfortunately, this will not work as for the measurement we need the difference in pressure before and after the obstacle. If going over a reverse facing opening, you're creating a vacuum which may be not repeatable with different line pressures. But thanks anyway for the idea.
Is it for measuring flow or velocity ?
It measures velocity, but with a simple ecuation you can calculate the flow of the fluid in the pipe Q=v*A where A is the cross sectional area of the pipe and Q is the volume flow.
It's true, they're based on the same principal... Now I know that the Prandt tubes is a type of Pitot tube known as Pito-static tube.
Daniel Serrano chfvcxhxvbcgfchcnvbhgbg
Thanks
how pitot tube able to move the diaphragm ?
The pressure from the pipe containing gas, steam or liquid is transported via the pitot tube to the membrane of the differential pressure transmitter. Here the membrane is deflected depending on the differential pressure created by the flowrate of the media.
How are you actually supposed to pronounce Pitot?
thanks for the details explanation
can i get the indonesia subtitle , please ?
Pitot tubes are actually not very useful for measuring DP/air velocities in square tubing...u have to tap a ton of holes
I guess they can't call it annubar because Rosemount registered the name.
superb :)
i thought it was anubar
Nice explanation but all the tones are flat and I will definitely watch this movie clips again if I couldn't fall asleep at nite.
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