FIELD: flow meters.
SUBSTANCE: invention relates to a Venturi flow meter assembly and a flow measurement method using such a flow meter. A flow meter assembly having a longitudinal axis has an upstream member having the first end, the second end and a fluid passageway extending between the first and second ends, a downstream member having the first end and the second end, and the first neck member having the first end, the second end, and a fluid passageway extending between the first and second ends, the fluid passageway of the first neck member having a minimum diameter that is less than the minimum diameter of the fluid passageway of the element located above downstream, the first neck element being detachably coupled to an upstream element and a downstream element.
EFFECT: invention provides possibility, using one flow meter body, to accurately measure fluid flows in different ranges of fluid flow values.
20 cl, 7 dwg
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