In the pharmaceutical and medical equipment industries, especially in the semiconductor industries such as chips and memory, ultrapure water is used in the production process. The measurement of water pressure in pipelines and storage tanks requires precise measurement, and the traditional way is to use ordinary pointer pressure gauges for detection; The current industry requires precise measurement of processes, and its data needs to be uploaded for real-time monitoring. The entire process data of pressure changes is collected and monitored by computers for storage, control, analysis, and traceability, and the entire production process is monitored; The pressure and temperature measurement of Graeff sensors effectively solves this difficulty.