Pressure and Vacuum Chamber used for Calibration of Weather Stations across the US

Have you ever wondered how the weather forecast works? You must admit; the weathermen (or weatherwoman) have become a whole lot more accurate over time. 10 years ago, the weather forecast was not as accurate as it is today.

Part of the reason is that we have better forecasting technology as in more powerful computers who crunch numbers faster to out a most likely scenario. Another reason is that mathematics, physics, and science has progressed. The main reason however, is that we have better tools and equipment.

Did you know that there are countless large weather stations spread across the US that continuously measure and record temperature, moisture, wind speed, barometric pressure, etc. Over the years, I have done a lot of trail running and have passed countless of these weather stations and never bothered to ask myself what these fenced off structures were spread all across the Wasatch Front. It all changed one day when we received a call from one of the engineers who maintains and calibrates the sensors of weather stations.

The requirements were simple, build a pressure and vacuum chamber with several vacuum feedthrough wires so that the calibration engineer has the ability to connect to the sensors inside the vacuum chamber during the vacuum run without compromising the vacuum. The overpressure is required because the sensors are calibrated from sea level to 30,000 feet. At higher altitudes, additional pressure must be applied to simulate atmospheric pressure present at sea level.

Clear Acrylic Vacuum Chambers turned out to be a good choice because the walls are transparent enabling full view of chamber interior during calibration. In addition to being fully transparent, acrylic vacuum chambers are easily modified which means that several vacuum feedthroughs can be added to the vacuum chamber with relative ease.

If you would like to find out more about how to get a similar vacuum chamber, fell free to Contact Us

Did you know that we carry a many more products?

Our clients prefer to work with us because we are Experts in Custom Fabrication (especially Polymer Fabrication). You should check out some of our other items we carry; click on the links below.

Vacuum Chamber and Pump Systems
Our Vacuum Chamber and pump systems are fully setup and ready to go. What you get is a vacuum chamber, a vacuum pump, and connection hardware. We carry acrylic or metallic vacuum chambers and a whole range of vacuum pumps from Rotary Vane, Piston, or Venturi. What type of vacuum chamber and pump system you want depends on your project requirement, budget, and other specifications.
Digital Vacuum Gauge Instruments
A Digital Vacuum Gauge is an instrument which precisely measures a vacuum level inside a vacuum chamber. Unlike a rough dial vacuum gauge, which shows only where the vacuum chamber is roughly with an error of up to 3% (a high as 1 inHg) a digital vacuum gauge will show vacuum levels up to 3 significant figure in Torr and millitorr – this makes the digital vacuum gauge ten thousand times more accurate than the dial vacuum gauge.
Our Work: Chamber for Vacuum Extrusion System
This is a custom acrylic vacuum chamber build for a high volume manufacturer of parts which are fabricated using vacuum extrusion techniques. The challenge was to build a vacuum chamber system which mated on two perpendicular surfaces; on the bottom and on the rear of the chamber. This was accomplished by incorporating a double gasket mechanism on the bottom and incorporating a clamping mechanism on the rear.
Related Articles: Anatomy of the Pressure Decay, Vacuum Decay, and Force Decay Curve
How do you know that you have a good part during your leak test? In order to understand your leak test, you must first understand the Test Decay Curve and what it tells you about your test specimen. There is a certain way that a test specimen behaves during the leak test.