The Main Fluid Links are made up of glass tubes filled with mercury. Mercury is an element that can serve as an interface between the forces of thought and energy. Since Artron Energy is the energy of thought, the mercury in the links acts as a "fuse" to transfer power to the Dematerialization Circuit. All early model Capsules suffered from frequent failures of their fluid links. If the drive systems receive over 1000 omegas of power for more then a few seconds there is a good chance the Fluid Links will overload and release vaporized mercury into the control room. Sometimes these overloads required replacement of the entire link. The Links are located in the base of the console in the Secondary Control Room and can refilled by pouring mercury into the appropriate port on the console. The fluid links require ten millilitres of mercury to function. In addition to refilling the Links, after an overload the operator will have to repair several other systems (located in the Power Stacks Room). This problem was rectified with the Type 60 and later models.
The following color code is used:
- Black: For information from the TV Series, including Dimensions in Time, and 1996 TV Movie.
- Blue: For information from the Novels and Audios including Target, Virgin, BCC, and Big Finish.
- Green: For information from 'licensed' reference sources such as the Technical Manual, Doctor Who Magazine, and the Role Playing Games.
- Red: For information from unofficial sources -The Faction Paradox series, behind the scenes interviews, author's speculation, and popular fan belief.
The TARDIS Technical Index is copyright Will B Swift.