Method and device for detecting density of feed liquid in container and solid content in feed liquid

The invention provides a method for detecting the density of feed liquid in a container and the content of solid in the feed liquid, which comprises the following steps of: acquiring pressure values in acquisition points by using an intelligent high-precision double-flange differential pressure measurement sensor, calculating a pressure difference value between the acquisition points through a software system and eliminating the influence of system flowability; and the online intelligent monitoring system is used for compiling a related logic software program of a feed liquid density increase value and an initial working condition clear feed liquid density value, so that the pressure difference change is acquired to output the feed liquid density change and the solid content change in the feed liquid, and the change is displayed on a secondary instrument or a DCS (Distributed Control System) or a PLC (Programmable Logic Controller) system. According to the method and the device for detecting the density of th