This paper describes development and design of new type of pressure sensing. One of the main parameters of this sensor is pressure measuring independence on operating temperatures. Significance of this is design of thermal compensation capsule warranting accuracy of pressure measuring. Software ANSYS was used for verify of capsule thermal compensation. The main goal of the project is the research of complex smart pressure sensor based on the new sensing system with galvanic fiber optic isolation including research and experimental validation of this new pressure sensing principle.