How to measure the pressure of an autoclave?

The core part of the autoclave is a (ring-shaped) strong magnetic coupling, sealing, and stirring device. Multiple magnetic steel rings make two powerful permanent magnets inside and outside;
The inner magnetic steel body is sealed in a sealed cylinder made of stainless steel and connected to the stirring part. The sealed cylinder is tightly connected with the kettle lid, kettle body, and fasteners to form a static sealing cavity, so that the reaction medium is completely in a static sealing state without any leakage or contamination. and personal danger;
The speed-regulating motor of the autoclave drives the outer magnetic steel body, and the strong magnetic force passes through the sealed cylinder made of stainless steel without contact, and the strong magnetic force of the inner magnetic steel body sealed in the sealed cylinder attracts and positions itself to each other. It acts on the axial rotation and traction to carry out high-temperature and high-pressure stirring reaction.