How Accurate Can Static Pressure Measurement Be?

In summary, the person is looking for a way to measure static pressure with high accuracy, particularly before and after a fan with a precision of 10[Pa]. They are wondering if a sensor and setup can achieve this and are considering using an inclined manometer. The reason for the high precision is to determine the flow from a fan curve. The expert suggests using a mid-level digital manometer for this purpose.
  • #1
dries
7
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?
 
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  • #2
Do you mean 1 part in 10,000 of atmospheric pressure? Why the precision?
 
  • #3
If you are trying to measure the DP across the fan you might manage it with an inclined manometer.
 
  • #4
Yes I mean 1/10000 of atmospheric pressure, the accuracy is needed to determine the flow from a fan curve.
 

FAQ: How Accurate Can Static Pressure Measurement Be?

What is pressure measurement?

Pressure measurement is the process of determining the force exerted by a fluid or gas on a surface. It is typically measured in units of force per unit area, such as pounds per square inch (psi) or pascals (Pa).

Why is pressure measurement important?

Pressure measurement is important in many scientific and industrial applications. It allows us to monitor and control processes that involve fluids or gases, such as in chemical reactions, manufacturing, and weather forecasting. It also plays a crucial role in many fields of science, including physics, engineering, and meteorology.

What are the different methods for measuring pressure?

There are several methods for measuring pressure, including mechanical, electrical, optical, and acoustic techniques. Mechanical methods involve using a physical device, such as a manometer or Bourdon gauge, to directly measure the force exerted by the fluid or gas. Electrical methods use pressure sensors that convert pressure into an electrical signal, while optical methods use light to measure changes in pressure. Acoustic methods involve using sound waves to determine pressure changes.

How accurate is pressure measurement?

The accuracy of pressure measurement depends on the method used and the conditions under which it is performed. In general, mechanical methods tend to be less accurate than electrical or optical methods, but they can still provide reliable measurements within a certain range. The accuracy can also be affected by factors such as temperature, humidity, and the type of fluid or gas being measured.

What are some common units used for pressure measurement?

Some common units for pressure measurement include psi (pounds per square inch), bar, Pascal (Pa), atmosphere (atm), and torr. The choice of unit often depends on the application and the location (e.g. different countries may use different units). It is important to convert between units accurately when communicating pressure measurements.

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