The primary function of a pipeline pressure sensor is to monitor and control pressure variations within fluid systems. It senses the pressure of the medium inside the pipeline and converts it into an electrical signal for transmission and processing, thereby achieving precise measurement and control of the pressure. Specifically, the working principle of the pipeline pressure sensor involves the direct application of medium pressure onto the sensor's diaphragm, causing a micro-displacement in the diaphragm that is proportional to the medium pressure. This, in turn, results in a change in the resistance of the sensor. Electronic circuits detect this change and convert it into a standard signal corresponding to the pressure.