A Pressure Shortage?


A Pressure Shortage?

In 2021, a shortage of semiconductors impacted automotive companies’ production, smartphone new product introductions, and more. Also, the Colonial pipeline hack created a fuel shortage for the U.S. southeastern states. While the new outbreak of COVID-19 in India has received global attention since it has reported more than 300,000 daily infections for 22 consecutive days, what is less well known is that the outbreak has caused a shortage in oxygen (O2) concentrators.

For those COVID patients who do not require intensive care, oxygen concentrators deliver about five to 10 liters of oxygen per minute, typically at about 93% purity.  Unlike tanks or other containers supplying oxygen, concentrators use electrical pumps to provide a continuous supply of oxygen by removing the nitrogen from the surrounding air. To monitor the process and safely supply air to the patient, an oxygen concentrator uses differential pressure sensors for flow measurements and gauge pressure sensors for sensing pressure at different points in the process. The low differential pressure measurements for flow are typically only a few kPA. For those addressing the oxygen concentrator shortage, essentially any of All Sensors DLHR, DLVR, ELV, ELVR, MAMP, and MLV series products that have respiratory applications will work in these low pressure applications.

Classic Pressure Swing Adsorption (PSA) Oxygen Concentrator Diagram

Classic pressure swing adsorption (PSA) oxygen concentrators use two-bed molecular sieves.

Do you have a pressure sensing question? Let us know and we’ll address it in an upcoming blog.
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