Application and introduction of barometer

What is a Barometer?

By definition, a barometer is an instrument that measures atmospheric pressure. Most commonly used in weather forecasting and to determine altitude, because atmospheric pressure changes as you move farther, closer, or below sea level.

The first barometer was invented in 1643 by Evangelista Torricelli, an assistant of Galileo. Galileo suggested filling a 4-foot glass tube with mercury and inverting it on a plate. Torricelli observed that some of the mercury did not escape from the tube and created a vacuum-like effect. On further observation, he noticed that the height of the mercury varied from day to day due to changes in atmospheric pressure, and from there, the Torricelli tube (barometer) was born. Let’s take a look at the more common types of barometers and how they work.

The 4 Barometers and How They Work

1.Digital Barometer
The most common type of barometer is the digital barometer. These digital devices are equipped with microelectromechanical (MEM), also known as detection units or chips. These tiny integrated circuits (ICs) are sensitive to air pressure.

2.Water barometer
Also known as weather glass or storm glass, these devices contain water instead of mercury and have an open spout that uses gravity, where changes in atmospheric pressure cause the liquid to rise or fall.

3.Aneroid barometer
These barometers are usually circular and resemble a compass or clock. Inside the aneroid barometer is a small metal box from which most of the air is drawn. The metal box then contracts and expands as the pressure changes, causing the needle on the face of the barometer to move.

4.Mercury Barometer
A sealed vertical glass tube containing mercury that rises or falls to determine atmospheric pressure. Introduced in 1643, these types of barometers were rarely used because some countries restricted the sale of mercury.

Now that you have a better understanding of the origin of barometers and understand the basic functions of how they work, let’s dive into the use cases and benefits of owning a barometer.

How to use a barometer and its benefits:

Atmospheric pressure can be explained as the pressure exerted by the atmosphere on the Earth as it is pulled by the Earth’s gravity. Atmospheric pressure changes locally as heavier or lighter weather fronts interact and replace each other.

A sudden change in pressure could be caused by an impending low pressure weather front, which could translate into a drop in temperature and possible precipitation, or if the pressure rises, it could indicate that the weather may be improving.

These instruments are commonly used by meteorologists to predict short-term weather changes and patterns. However, you don’t have to be a meteorologist to use a barometer.

Atmospheric pressure sensor

The air pressure detector adopts a high-precision measuring unit, and the device has built-in high-precision temperature compensation, high stability, low drift, and high repeatability; the wall-mounted housing can be easily fixed on the wall. The atmospheric pressure sensor is suitable for small weather stations, altimeters, agricultural greenhouses, archives and other places where atmospheric pressure monitoring and temperature measurement are required.

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.