| 摘要 |
1. Device for measuring the rotation of a turbine of a counter for the rate of flow of fluid in which the turbine (4) is set in rotation in a chamber (C) for the circulation of fluid which passes through a body (1) of the counter and comprising at least one electromagnetic flux emitter (15), at least one receiver (13, 14) for the electromagnetic flux emitted, a device for the modulation of the electromagnetic flux, the said device being situated between the emitter (15) and the receiver (13, 14) and set in rotation by the turbine (4) and a device for detecting the modulation of the electromagnetic flux arriving at the receiver, characterized in that the device (17-20) for detecting the modulation of the electromagnetic flux arriving at the receiver is independent of the emitter (15) and of a device (16) for supplying electrical signals of the said emitter (15) and that the emitter (15) and receiver (13, 14) are optically separated from each other. |
