Abstract: A fluidic gas metering system interposed in a line running from a gas source to a user site to meter the gas stream being supplied to the user in a broad flowrate range defined by a low flowrate band at the lower end of the range, a medium band at the middle of the range and a high band at the upper end thereof. The system includes an input chamber which receives a stream of pressurized gas from the source and an output chamber from which the gas is supplied to the user. Intercoupling the chambers are three gas flow channels. The first channel is defined by a first fluidic generator operative only when the flowrate of the gas lies in the low band to yield periodic pulses whose frequency is proportional thereto. The second channel is defined by a second fluidic generator operative only when the flowrate of the gas lies in the medium band to yield periodic pulses whose frequency is proportional thereto.