Odorization pumps are specially designed diaphragm plunger metering pump, plunger travel of the exercise machine lock, each time to maintain a constant output.
PVC, Teflon and fluorion diaphragm were found to be better than glass as materials of diaphragm cell for their advantages in corrosion resistance as well as less electric resistance.
And then, the detail of designing process for the optic fiber pressural liquid level sensor is given in the thesis, including calculation of diaphragm and the microdeformation tooth plate.