Introduction and application of Air pressure detector
What is air pressure?
One easy way is to measure air pressure. If it’s rising and the pressure is high, it’s likely to be a good day; if the pressure is falling, it’s more likely to be wet, windy, and dreary. Instruments that measure air pressure are called Air pressure detectors and have been used for centuries in weather forecasting and scientific research. If you’ve ever dived, you know what stress feels like. Dive below the surface and you’ll soon feel the weight of the water on you. The deeper it is, the more water there is on it, the greater the weight, and the greater the pressure. But even if you never go to sea, your body will be stressed.
Look up at the sky and imagine the weight of the atmosphere: the mass of gas that surrounds the Earth and is pulled to the surface by gravity. All this gas may look like one giant, empty cloud, but it still has weight. It still weighs on your body. That’s air pressure. When you’re at the bottom of the ocean, the weight of the water weighs on your body, making it difficult for you to breathe from your oxygen tank. Air pressure never has this effect because our bodies are hollow and our lungs are filled with air, so the air exerts the same pressure on the inside and outside of our body at the same time. This is why we feel air pressure differently than water pressure.
Why does air pressure vary from place to place
Air pressure on our planet varies. It’s highest at sea level (where the most air is pushed down) and gets lower and lower as you go up. Above the atmosphere, there’s much less air — and so less oxygen to breathe. This is why climbers often have to use oxygen cylinders. This is also why airplanes must have pressurized cabins (inner passenger compartments where the air is kept at a higher pressure than it would normally be at that altitude) so people can breathe comfortably.
Even in one place, the air pressure is constantly changing. That’s because the Earth is constantly revolving and moving around the sun, so different parts are heated to different degrees. As the air cools and descends, it increases the pressure near the ground. High-pressure areas like this are associated with good weather. The opposite happens when air warms and rises to create areas of low pressure and moist weather.
How do we measure air pressure
Suppose you are an inventor and your job is to build a machine that can measure air pressure. what are you going to do Imagine air pressing against you and see if you can imagine building something that can measure its pressure. See if you can draw something on a piece of paper right now. Here’s a clue. Imagine that the downward pressure of air is contained in a giant, invisible tube that presses down on the surface of the earth at your feet.
If you imagine something a little bit like a pair of scales. You can measure the weight of the air in the tube. Congratulations! This is the solution. A device that measures air pressure (we call it a barometer) works by measuring the amount of air pressed against it.
Atmospheric pressure sensor
Air pressure detector are widely used in wind resource assessment, environmental monitoring and meteorological research.In the environment of measuring air pressure, such as farmland measurement and industrial detection.
The automatic weather station can continuously and automatically monitor temperature and humidity, PM2.5, PM10, atmospheric pressure, wind speed, wind direction, noise, rainfall, soil, evaporation, SO2, NO, O3, CO, quickly and accurately collect and process monitoring data to achieve regional air quality Online automatic monitoring.
