Teledyne 3010TAC - Split architecture trace oxygen analyzer (EU - CENELEC) - Manual (Page 66)

2-2: Part II
2 Operational Theory Model 3010TAC
Teledyne Analytical Instruments
being analyzed. The Micro-Fuel Cell is therefore a hybrid between a
battery and a true fuel cell. (All of the reactants are stored externally in a
true fuel cell.)
2.2.2 Anatomy of a Micro-Fuel Cell
A Micro-Fuel Cell (MFC) is a cylinder only 1¼ inches in diameter
and 1¼ inches thick. It is made of an extremely inert plastic, which can be
placed confidently in practically any environment or sample stream. The
cell is effectively sealed, although one end is permeable to oxygen in the
sample gas. The other end of the cell is a contact plate consisting of two
concentric foil rings. The rings mate with spring-loaded contacts in the
sensor block assembly and provide the electrical connection to the rest of
the analyzer. Figure 2-1 shows the external features of a typical cell.
Figure 2-1: Micro-Fuel Cell
Refer to Figure 2-2, Cross Section of a Micro-Fuel Cell, which illus-
trates the following internal description.
Figure 2-2. Cross Section of a Micro-Fuel Cell (not to scale)