Oxygen Concentrator
Technical Service Manual
| PN 20631679 Rev G
12
How The Eclipse 5 Works
INTRODUCTION
The Eclipse 5, Personal Ambulatory Oxygen System with autoSAT Technology is a portable medical device used to extract
oxygen from the atmosphere, concentrate it to 87–95.6% and present the oxygen to the patient. The device will operate in
Continuous Flow Mode or Pulse Dose Mode. In Continuous Flow Mode the oxygen is provided at a constant flow rate between
0.5
and 3.0 LPM. In Pulse Dose Mode, oxygen is supplied in a bolus at the beginning of each inspiration, providing a selectable
range setting of 16mL to 192mL.
The Eclipse 5 operates from either external power or from an internal rechargeable Power Cartridge. The system includes a
“Smart” battery charger that recharges the internal Power Cartridge whenever the Eclipse 5 is connected to AC or DC power.
The system monitors and controls both the power source and the Power Cartridge charger.
Figure 1: Eclipse 5 System Block Diagram
ATF
®
CONCENTRATOR MODULE
The Eclipse 5 uses a passive system to separate oxygen from air. Air flows into the Eclipse 5 where it is filtered and then
enters the compressor. Pressurized air flows from the compressor into the ATF® Concentrator Module where it is separated
into oxygen and nitrogen components. The air separation process uses a rotary valve system to force air through a series of
pressurized sieve beds. Through a process known as “vacuum pressure swing adsorption,” nitrogen molecules are collected on
an adsorbent material allowing the concentrated oxygen to be forced through a sieve bed into the product tank. The nitrogen
molecules are then purged from the adsorbent material using a vacuum pressure cycle.
Oxygen flows from the product tank through a HEPA filter and past a sensor that measures flow and concentration. A flow
control valve regulates the flow of concentrated oxygen presented to the patient. The process is continuously repeated during
operation.
