| 摘要 |
<p>The device for measuring the rate of flow of a fluid flowing in a closed conduit (2) includes a rotor (5) whose speed of rotation is directly dependent on the flow rate of the fluid. The rotor (5) is carried symmetrically on a shaft (6) which extends substantially at right angles to the longitudinal axis of the conduit (2). The rotor (5) includes measuring means in the form of bores (9, 10) provided therein, and a light-conductor (11, 12) is provided for determining the rotational speed of the rotor. The rotor preferably consists of one or more mutually parallel and circular plates.</p> |
