The intelligent differential pressure transmitter is used to measure the liquid level, density and pressure of liquid or steam, and then convert it into 4~20mA DC signal output. The ST1151/3351DP intelligent type can communicate with the HART manual operator to set, monitor or form a field monitoring system with the upper computer. ZC1151/3351DP field adjustable intelligent differential pressure transmitter is a new product developed by our company according to the field requirements. It can be separated from the manual operator to achieve field zero adjustment, configuration and other operations by pressing keys.