i am making blood pressure measuring device using arduino nano

Hi , I am designing blood pressure measuring device using arduino nano v3.3. I am bit confused that how to measure the air pressure from the sensor (MPS20N0040D-d) i tried different configuration. but it did not work. even i tried one method but that also failed. here is the link

please help me because this is my project. I have attached the basic picture of my circuit.
Please find the attachment.
thanks in advance