A U-tube manometer is used to check the pressure of natural gas entering a furnace. One side of the manometer is connected to the gas inlet line, and the water level in the other side open to atmospheric pressure rises 2.2 in. What is the gage pressure of the natural gas in the inlet line in in. H20 and in lb/ft^2 gage?
Pgas=________________ in. H20 gage
Pgas=________________ lb/ft^2 gage
