How Accurate Can Static Pressure Measurement Be?

AI Thread Summary
Static pressure measurement accuracy can be achieved with appropriate sensors and setups, particularly when measuring before and after a fan. An accuracy of 10 Pa is feasible, which corresponds to 1 part in 10,000 of atmospheric pressure. For differential pressure across a fan, an inclined manometer may suffice, but a mid-level digital manometer is recommended for higher precision. The need for such precision is primarily to accurately determine airflow from a fan curve. Overall, achieving high accuracy in static pressure measurement is possible with the right tools and methodologies.
dries
Messages
7
Reaction score
0
I wondered how you can measure (static) pressure, with an as high as possible accuracy. Could you share your experience about which sensor and setup you allready used?

I would like to measure the static pressure before and after a fan with an accuracy of 10[Pa]. Do you think this is possible?
 
Engineering news on Phys.org
Do you mean 1 part in 10,000 of atmospheric pressure? Why the precision?
 
If you are trying to measure the DP across the fan you might manage it with an inclined manometer.
 
Yes I mean 1/10000 of atmospheric pressure, the accuracy is needed to determine the flow from a fan curve.
 

Thread 'Query on Isentropic relationships (such as PV^gamma = constant)'

Hi all, I have a question. So from the derivation of the Isentropic process relationship PV^gamma = constant, there is a step dW = PdV, which can only be said for quasi-equilibrium (or reversible) processes. As such I believe PV^gamma = constant (and the family of equations) should not be applicable to just adiabatic processes? Ie, it should be applicable only for adiabatic + reversible = isentropic processes? However, I've seen couple of online notes/books, and...
View full post »
Thread 'How can I find the cleanout for my building drain?'

Thread 'How can I find the cleanout for my building drain?'

I am a long distance truck driver, but I recently completed a plumbing program with Stratford Career Institute. In the chapter of my textbook Repairing DWV Systems, the author says that if there is a clog in the building drain, one can clear out the clog by using a snake augur or maybe some other type of tool into the cleanout for the building drain. The author said that the cleanout for the building drain is usually near the stack. I live in a duplex townhouse. Just out of curiosity, I...
View full post »

Thread 'Dry sump pump issue'

I have an engine that uses a dry sump oiling system. The oil collection pan has three AN fittings to use for scavenging. Two of the fittings are approximately on the same level, the third is about 1/2 to 3/4 inch higher than the other two. The system ran for years with no problem using a three stage pump (one pressure and two scavenge stages). The two scavenge stages were connected at times to any two of the three AN fittings on the tank. Recently I tried an upgrade to a four stage pump...
View full post »

Similar threads

Ways to measure elastomer swell
Replies
8
Views
2K
Question about transient temperature and pressure for air flowing into a box
Replies
1
Views
498
Comparetto type Air Cleaner/Filter: What causes its increased airflow?
Replies
5
Views
3K
Pressure Difference measurement using Pressure Sensors / Transducers
Replies
5
Views
4K
Vacuum furnace argon fill system — advice needed
Replies
3
Views
123
Please help explain this Blood Pressure Monitor 'calibration' system
Replies
28
Views
4K
Pressure variations after rapid pressurization
Replies
9
Views
2K
How calculate lift/drag using static pressure taps in wind tunnel test?
Replies
9
Views
3K
How to calculate time of Pressurization in vessel?
Replies
15
Views
4K
Decompressing through an underwater horn shaped tunnel
Replies
6
Views
2K

Hot Threads

Recent Insights

Back
Top