Abstract: A fuel supply arrangement (1) for a fuel monitoring system (3). It comprises a fuel distribution arrangement (31) and a fuel monitoring outlet line (29) which, in use, is connected to a source of fuel (7). The fuel distribution arrangement (31) comprises a fuel monitoring supply line (57), to which is connected an inline fuel pump (53). A first fuel sensor supply circuit (67) and a second fuel sensor supply circuit (71) are each connected to the fuel monitoring supply circuit (57) downstream of the inline fuel pump (53). The first fuel sensor supply circuit (67) is provided with a sensor inlet connection and a sensor outlet connection for inline connection of a sensor. The second fuel sensor supply circuit (71) comprises a sensor manifold (91) with ports for connection of a plurality of sensors (97,99) in series with each other.