The 219 pressure sensor has a built-in high-stability core and a built-in temperature compensation function. The whole device is composed of Hirschmann connectors, diffused silicon core, and supports low-voltage absolute voltage RS485 and IIC output. The shell is made of stainless steel PT-304 material and can be laser and paper labeled. Process links can be customized according to product requirements. It has a wide range of applications and can be used in hydraulic machinery, engineering machinery, textile machinery, lubricating oil stations, oil dispensers, gas dispensers, refrigerators, ship machinery and tobacco machinery, etc.