As you know Invacare Platinum 10 Oxygen Concentrator with O2 Sensor is nice Quality Product
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Invacare Platinum 10 Oxygen Concentrator with O2 Sensor Features

Compatible with the HomeFill II transfilling system. Features a spring mounted compressor, easy access to service by removing only four cabinet screws, a top handle, and a side-access door for both the inlet filter and diagnostics. Maximum Outlet Pressure: 9 +/- 0.5 PSI. Rated Current Input: 4.7 amps average @ 5L/min. Sound Level: 58 dB average. Oxygen: Output: 95.6% to 87% at all flow rates. Operating Flow Rate: 2 – 10 L/min. Power: 585W. Pressure relief mechanism: 35 psi +/- 3.5 psi with cabinet, outlet HEPA, compressor inlet filters. Weighs just 54 pounds. 3 year limited warranty. Dimensions: 18-3/8″W x 26-3/8″H x 14-3/8″D
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