Meteorological observation is of extremely important significance for weather forecasting, climate research, aerospace, and many other fields, and the pressure calibration pump plays a key role in meteorological observation instruments and equipment. In terms of barometric pressure observation, the barometer is one of the basic instruments in a meteorological station. The pressure calibration pump can calibrate the barometer regularly to ensure the accuracy of the barometric pressure data it measures. Accurate barometric pressure data is an important basis for analyzing atmospheric circulation and predicting weather changes. For example, when judging the movement and development trends of high-pressure systems and low-pressure systems, a small error in barometric pressure measurement may lead to a deviation in weather condition prediction. In meteorological balloon sounding, the meteorological sensors carried by the balloon need to measure parameters such as barometric pressure, temperature, and humidity at different altitudes. The pressure calibration pump can be used to calibrate the pressure measurement function of these sensors to ensure the reliability of the barometric pressure data collected in the complex high-altitude environment, providing high-quality data support for studying the vertical structure of the atmosphere and climate change. In addition, in some advanced meteorological radar systems, the pressure calibration pump is also used to calibrate the equipment components related to barometric pressure, ensuring the stable operation of the radar system under different meteorological conditions, improving the accuracy and reliability of meteorological observation, enhancing the ability to warn of meteorological disasters, and reducing the impact of meteorological disasters on the social economy and people's lives.