biogas digester 3d model

Create a clean 3D technical model of a small-scale biogas digester with a behavior-aware monitoring system. Show a vertical cylindrical plastic digester with a dome-shaped gas collection top. Make the digester body semi-transparent to reveal internal zones for slurry digestion and gas accumulation. Inside the digester, include a thin pH sensor probe immersed in the slurry and a temperature sensor mounted on the inner wall. On the outside surface, include a contact-mounted microphone and a vibration sensor fixed to the digester wall to sense structure-borne vibrations caused by bubble activity and slurry movement. Add a pressure sensor on the gas outlet pipe and a slurry level sensor near the feed inlet. Place an external ESP32 controller enclosure beside the digester and visually connect it to all sensors with simple cables. Include a feed inlet pipe and a gas outlet pipe, optionally connected to a small balloon.