The pressure gauge uses an elastic element as the core sensitive component and can display in real - time the pressure values of gases or liquids in pipelines and containers. It is a key monitoring instrument for industrial safety production. It can directly indicate the current pressure state of the system, achieve over - pressure warning and working condition monitoring. It is a universal safety accessory in scenarios such as hydraulic, pneumatic, HVAC, and vacuum equipment. It features reliable accuracy, intuitive reading, convenient installation, and strong environmental adaptability. It is a basic guarantee instrument for industrial automation and equipment operation and maintenance.