Teledyne 3010TAC - Split architecture trace oxygen analyzer (EU - CENELEC) - Manual (Page 73)

Oxygen Analyzer Part II: Analysis Unit
Part II: 3-3 Teledyne Analytical Instruments
3.5 Intrinsic Safety Barriers
Two dual-channels intrinsic safety barrier strips (P/N B367) are
installed between the cell and the control unit. The barrier strips are
housed in an approved bulkhead mountable barrier box (P/N E324). Refer
to drawing D66193 for terminal connection.
Figure 3-4: Control Unit (CU) to Analysis Unit (AU) Connector Cable
INTRINSIC SAFE BARRIERS & ENCLOSURE