| 摘要 |
<p>The measurement of the density of a slurry by means of a vibrational transducer (6) is preceded by the disruption of any space-filling structure which the slurry may have developed because of the aggregation of its suspended particles. Apparatus (1) for measuring the density includes means for destroying the space-filling structure before the measurement is made and these means may be passive, relying on relative movement between the means and the slurry to create the disturbance necessary to disrupt the structure in front of the transducer (6), or active, being driven to break up the structure in the field of measurement of the transducer (6). The passive means may comprise a screen (17) disposed in advance of the transducer (6) with respect to the direction of relative movement.</p> |
