Teledyne Mixchek - Helium / Oxygen mixture analyzer - Manual (Page 19)

MIXCHEK Setup
Teledyne Analytical Instruments 19
Figure 2-4: Power Adapter Port (Wall Mount)
The portable model is powered from 4 C-cell batteries, which must
be installed prior to placing the instrument in service. See Section 2.6.
The portable unit can also be powered using the optional 6 VDC power
adapters, P/N A558 (US) or A555 (CE). When using the adapter, insert
the jack into the port on the side of the front panel near the ON/OFF/
BATT TEST switch as shown in Figure 2-5. This figure also shows the
internal pressure vent port which allows the instrument to vent and
return to atmospheric pressure before the lid is opened.
Figure 2-5: Power Adapter Port (Portable Model)