Mass measurement systems and related methods for measuring mass of solids within a liquid

A measurement system, comprising:

• a vessel configured to contain a slurry mixture of a fluid and at least one solid material;
• and
• a probe assembly comprising a tubular assembly configured to be suspended partially within the slurry mixture, the tubular assembly comprising:
• a hollow tube having an open lower longitudinal end configured to be disposed within the fluid and an open upper longitudinal end configured to be suspended above the vessel and arranged to remain open while the tubular assembly is suspended partially within the slurry mixture;
• a first pressure sensor disposed within the hollow tube and oriented at a first axial location along a longitudinal axis of the hollow tube;
• and
• a second pressure sensor disposed within the hollow tube and oriented at a second axial location along the longitudinal axis of the hollow tube;
• and
• a controller operably coupled to the first and second pressure sensor and comprising:
• at least one processor;
• and
• at least one non-transitory computer-readable storage medium storing instructions thereon that, when executed by the at least one processor, cause the controller to:
• receive pressure data from the first and second pressure sensors;
• and
• based on the received pressure data, determine a mass of the at least one solid material within the vessel.