| 摘要 |
A device for measuring a parameter such as the mass concentration or the viscosity of a fluid medium (2) such as a suspension or a liquid, including a rotor (3) for rotation in said medium, a drive motor (7) and a drive transmission with a drive shaft (9) for the rotor and a sensor device (10) for sensing the torque which is transmitted to the rotor and which represents said parameter. The device is distinguished by that the sensor device (10) includes an excitable frequency gauge which is deformed by said torque, and the prevailing natural frequency of which is dependent on the deformation and is directly detectable by a stationary detector (12), which is placed outside the transmission.
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