The pressure transmitter adopts a pressure resistance sensor with a stainless steel isolation diaphragm as the signal measurement element, and has been automatically tested by a computer. The laser resistance adjustment process has been used for zero point and sensitivity temperature compensation over a wide temperature range. The amplification circuit is located inside a stainless steel casing and converts sensor signals into standard output signals. The entire product has undergone rigorous testing and aging of components, semi-finished products, and finished products This product is widely used in on-site pressure measurement and control of industrial processes such as petroleum, chemical, metallurgical, power, hydrology, etc. due to its excellent reliability, wide adaptability, flexibility, and diversity.