Hello. We use a manometer to measure the pressure of an air tunnel. The connection of the manometer has to be changed as sometimes water enters the manometer and contaminates the fluid inside. I have attached a picture in which I am showing the now and before of the connection. My question is: will this change in connection affect the reading in my manometer? (the black rectangles). If so, what will change in the equations? Now, the fluid is literally pushed inside the manometer, in the past it wasn't as the connection was attached the bottom of the tunnel. I have tried relating it to a Pitot tube reading, but I do not know how accurate this is, and some doubts have really gotten to me with the parameters. Please let me know if I did not explain myself very well. Thank you so much in advance.