Mixers for a viscometer and methods and computer-readable meadia for using the same

A fluid mixer comprising:

• a mixing element comprising a peripheral wall, the mixing element oscillatable about an axis lying in a plane tangent to a point on the wall of the mixing element;
• a shaft fixedly attached to the mixing element, the shaft being centered about the axis;
• and
• an actuator interfacing with the viscosity sensor and the shaft, wherein the actuator oscillates the shaft and the mixing element about the axis.

A method for controlling a viscosity of a fluid, the method comprising:

• measuring the viscosity of the fluid using a viscometer;
• positioning a mixing element within the fluid, the mixing element being oscillatable about an axis lying in a plane tangent to a point on a wall of the mixing element;
• adding a substance to the fluid in response to a signal sent by the viscometer;
• and
• oscillating the mixing element about the axis to mix the substance with the fluid.

A non-transitory and tangible computer-readable medium whose contents cause a computer to perform a method for controlling a viscosity of a fluid, the method comprising:

• measuring the viscosity of the fluid using a viscometer;
• positioning a mixing element within the fluid, the mixing element being oscillatable about an axis lying in a plane tangent to a point on a wall of the mixing element;
• adding a substance to the fluid in response to a signal sent by the viscometer;
• and
• oscillating the mixing element about the axis to mix the substance with the fluid.