초록 ▼

A fluid metering system includes a metering unit having a main flow channel and a bypass channel through which a portion of the total fluid flow through the unit is diverted, the bypass channel includes a fluid meter having means for monitoring a flow of fluid through the unit. The metering unit is

A fluid metering system includes a metering unit having a main flow channel and a bypass channel through which a portion of the total fluid flow through the unit is diverted, the bypass channel includes a fluid meter having means for monitoring a flow of fluid through the unit. The metering unit is optionally of modular construction including a number of components including a fluid meter.

대표청구항 ▼

A fluid metering system comprising: an inlet for receiving fluid to be metered; an outlet for said fluid; a main flow channel extending between the inlet and the outlet, said main flow channel including a venturi; a bypass channel having an inlet connected to the main flow channel upstream of the ve

A fluid metering system comprising: an inlet for receiving fluid to be metered; an outlet for said fluid; a main flow channel extending between the inlet and the outlet, said main flow channel including a venturi; a bypass channel having an inlet connected to the main flow channel upstream of the venturi and an outlet communicating with said main flow channel within the venturi, whereby the pressure drop between the inlet and the outlet of the bypass channel is greater than the pressure drop between the inlet and the outlet of the main flow channel; flow monitoring means disposed in the bypass channel for monitoring the flow of fluid therethrough; and output means responsive to said flow monitoring means to produce an output representative of the total amount of said fluid flowing through the metering system; wherein said flow monitoring means comprises at least one microbeam sensor formed by micromachining in a semiconductor substrate wherein a beam is displaced by the fluid flow.