A volumetric
lubricant dispensing apparatus for delivering a precise volume of
lubricant, such as oil, to a rotating
machine element. The delivery mechanism includes a
piston and cylinder
assembly. A plurality of sensors are utilized to
record operating conditions of the
machine, element, environment, and
lubricant. The apparatus is controlled either manually or with the aid of a controller unit such as a
microprocessor. The output from each sensor is inputted into the
microprocessor wherein an
algorithm computes an responsive output. The responsive output is sent to the
piston and cylinder
assembly, which maintains an optimum lubricant condition within the reservoir wherein a rotating
machine element located. Alternatively, for the purpose of qualitative control, the present invention may be described as a
system intended for controlling lubricants, both mineral (natural) and synthetic based by measuring the condition characteristics of the lubricant. Some condition characteristics may include water or
moisture content (the content could be any liquid, e.g., solvents like ketones are known to change condition characteristics like
viscosity) and
viscosity.
Viscosity is related to temperature, therefore, temperature correlation to
viscosity is helpful to provide relative indications for condition characteristics like lubricant flow.