| 摘要 |
1. A fluid flow rate measurement apparatus of the Woltmann or axial turbine type, which comprises, within a tubular conduit member (10) : - a turbine (11) rotatively mounted on a shaft (12, 13) coaxial with said member (10), - a motion output shaft (30) coupled with said shaft (12, 13) of the turbine (11) for detecting the number of revolutions undergone by the turbine (11), - a control shutter (17) rotatable about an axis (16) upstream of the turbine (11) for calibrating said apparatus, characterized in that said motion output shaft (30) and said axis (18) of the control shutter (17) are coaxial. |
