Welcome to All Sensors “Put the Pressure on Us” blog. This blog brings out pressure sensor aspects in a variety of applications inspired by headlines, consumer and industry requirements, market research, government activities, and you.
Pressure for Oxygen Therapy
Patients short of breath may need an oxygen concentrator to provide sufficient oxygen to make their breathing easier. Underlying health issues that could require the extra oxygen or oxygen therapy include asthma, lung cancer, chronic obstructive pulmonary disease (COPD), the flu and, most recently, COVID-19. Without requiring oxygen stored in tanks or containers, oxygen concentrators provide a continuous supply of oxygen that comes from the surrounding air.
Modern oxygen concentrators delivering about five to 10 liters of the gas per minute, typically at about 93% purity, are designed for either stationary (home) or portable usage. While a home oxygen concentrator may weigh less than 20 pounds, many portable oxygen concentrator models weigh less than 5 pounds.
The oxygen concentrator uses a pump to compress the oxygen, filters or sieves to separate out nitrogen and other impurities, and pressure reducers to provide low pressure oxygen for patients to breath. With varying pressures and flow rates, different pressure sensors can be used at various points in the system. Any of the sensors for portable units need to be both small and light weight making microelectromechanical systems (MEMS) sensors ideal for these applications.
The low differential pressure measurements for flow are typically only a few kPA. Essentially, any of All Sensors DLHR, DLVR, ELVR, ELV and MLV series products that have respiratory pressure ranges will work for O2 concentrators in these ultra-low pressure applications.
Do you have a pressure sensing question? Let us know and we’ll address it in an upcoming blog.
Email us at [email protected]