The supply of pure oxygen has always shown dominance in the healthcare sectors due to variety of respiration related health problems and one such demand and crisis was tremendously faced during COVID-19 pandemic. The permanent ailment for such emergencies always adequate supply of oxygen concentrators and sufficient ventilator can support the hospitals to be defensive during such pandemics. This paper highlights on the design of a portable oxygen concentrator for medical usage invoking the technology Pressure Swing Adsorption (PSA). The PSA technology helps to achieve the selective air molecules and supplies oxygen at a greater selectivity ratio. A detailed study on LiAgX zeolite was performed and found that it is more effective using a layer of LiAgX zeolite as adsorbents. The LiAgX is the most suitable with better nitrogen to oxygen selectivity ratio with a flow rate of 5LPM. The sodium based zeolites were tested with 2-way solenoids and 4-way solenoids using oom202 sensor but the accuracy was found to be in the range of 85% and later the sensor was replaced to enhance the accuracy over 95% by ultrasound oxygen sensor ocs3f3.0 with UART communication.