| 摘要 |
<p>A device (1) comprises a body (E1, E2) defining a space (P) for the passage of a fluid, detecting means (32') for at least a hydraulic or chemical-physical property of the fluid passing through said space (P), and a control system. The connection between the detecting means (32') and the control system comprises a wireless data transmission circuit (SWG) connected to the detecting means (32'), and a corresponding receiving circuit (RWG) interfaced to the control sys tem. The transmission system can advantageously be a radio-frequency passive electric circuit (34, 36) without independent power supply.</p> |
