DBCG diffusion silicon pressure transmitter is a new type of differential pressure instrument. It is used to measure differential pressure and negative pressure of liquid, gas or vapor as well as the level of liquid in the open containers or pressure vessels. If it equipped with throttling device, it can measure flow of liquid, gas or vapor and convert the parameter into 20mA DC standard current output signal. It offers signal for indicator, recorder and regulator to realize the auto-testing and auto-controlling.