Streaming current monitor
AssigneeDbg IP Limited
InventorsDaniel Bryan Laird Edney, Grant Anthony Bowring
Life of this patent
Estimating the term…
Abstract
A streaming current monitor comprises a cylinder in fluid communication with a flow-path between an inlet and outlet and a piston received in the cylinder. A drive mechanism is configured to drive reciprocation of the piston in the cylinder to move colloid into and out of the cylinder via an annular space between the piston and cylinder. A pair of electrodes are exposed in a wall of the cylinder and spaced apart in a moving direction of the piston to sense a charge characteristic of the colloid. The drive mechanism is a linear actuator comprising a stationary part and a moving part connected to the piston via a shaft.
Claims20
A streaming current monitor (SCM) comprising:
- an inlet and an outlet to receive and deliver a flow of colloid to and from the SCM;
- a cylinder in fluid communication with a flow-path between the inlet and outlet, and a piston received in the cylinder to reciprocate therein,
- a drive mechanism to drive reciprocation of the piston in the cylinder to move colloid into and out of the cylinder via an annular space between the piston and cylinder,
- a pair of electrodes exposed in a wall of the cylinder and spaced apart in a moving direction of the piston, and
- a shaft extending between the piston and the drive mechanism, wherein
- the drive mechanism is a linear actuator comprising a stationary part comprising at least one wire coil and a moving part comprising at least one permanent magnet, the at least one permanent magnet connected to the shaft, the moving part, shaft and piston together forming a moving assembly, the at least one coil configured to generate a magnetic force to drive reciprocation of the moving assembly.
Dependencies are inferred from the claim text.