An inkjet printing system is disclosed and comprises at least one fluid reservoir containing a fluid, a fluid line that fluidly couples the at least one fluid reservoir with an imaging device, and a fluid level sensing apparatus fluidly coupled with the at least one fluid reservoir. The fluid level sensing apparatus comprises: a bottom portion having a fluid volume VB; an intermediate portion vertically adjacent the bottom portion and having a fluid volume VI, the intermediate portion including a first fluid sensor spaced vertically from a second fluid sensor; and an upper portion vertically adjacent the intermediate portion and having a fluid volume Vu, wherein Vu>VI>VB. The inkjet printing system also comprises a pump fluidly coupled with the at least one fluid level sensing apparatus and configured to exert fluid pressure along the at least one fluid level sensing apparatus.