Patent ID: 11892336
Assignee: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 13:
14. An apparatus for determining a vertical level or density of a material column including a granular solid or a solid-liquid mixture, the apparatus comprising:
a support member; and
at least one measurement module;
wherein the measurement module comprises:
a support arm mounted to the support member and extending outwardly from the support member;
a displacer mounted to the support arm; and
a force measurement device configured to measure a force attributable to a mass of the displacer mediated by a buoyancy of the displacer in the material column,
wherein the measurement module has a data connection to a data processing unit for transmitting measurement data from the measurement module to the data processing unit to generate level or density information about the material column,, wherein the apparatus further comprises a vibration actuator configured to vibrate material surrounding the displacer in the material column to fluidize the material surrounding the displacer in the material column,
wherein the data processing unit is configured to process the measurement data to remove vibrational noise from the vibration actuator.