Embodiments of the disclosure relate to a biosample cartridge that includes storage slots for holding biosample plates. The pulley has a slant slot matching the biased holes to allow two ends of a cord to pass through in a separated manner towards two sides so that the cord may be wound on the pulley neatly without entangling. During disaster recovery, the terminal is able to associate itself with one of a plurality of sub-intervals. Fluid transfer into the sealing element is restricted when a pressure in the sealing element is greater than a threshold value.