Are there any good measurement options?
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I have a working condition like this. Two media are controlled by quantitative dripping and enter the first-level reactor for reaction. The overall volume is about 500kg/h for one medium and 900kg/h for the other. The final reaction liquid flows through the overflow pipe of the first-level reactor to the second-level reactor. In this overflow pipe, I would like to consider adding a measurement flow rate to more accurately judge. Is it a measuring element that cuts off the flow (used to determine whether there is a pipe blockage or other problems). One problem is that it is impossible to fill the pipe because it is difficult to achieve even half a pipe due to quantitative dripping, and the reaction liquid is easy to hang on the wall. Switches such as tuning forks are basically difficult to use well. There must be no dead zone in the pipe. The material will crystallize and block the pipe when it cools down. I don’t know if you have encountered this before. Is there any better option?
Can you provide the approximate composition and physical or chemical properties of the medium? Any detection method needs to be related to a certain property of the medium. Just saying this makes it impossible for everyone to judge and choose the appropriate detection method.
Can a window be installed on the pipeline and a camera be installed for real-time monitoring in the control room?
Capacitive flow switch with probe with anti-stick coating such as PTFE； Or use a non-contact radar material switch.
To see if the pipe is blocked, just add a differential pressure transmitter and measure the differential pressure at the beginning of the pipe. A large differential pressure means it is blocked.