Pressure gauges are widely used in many industrial fields and some equipment in daily life, such as chemical production, petroleum refining, heating systems, etc. It can accurately measure pressure values and provide key data for the safe operation of equipment and process control. However, with the increase of usage time and the influence of environmental factors, the measurement accuracy of pressure gauges may deviate. This highlights the importance of calibration. Calibration can ensure that the readings of pressure gauges match the actual pressure values, avoiding equipment failures, safety accidents or product quality problems caused by inaccurate pressure measurements. Through regular calibration, enterprises can ensure the stability and reliability of the production process, reduce potential risks and improve overall operational efficiency.