Accession Number : ADD008923

Title :   Fluidic Oil Viscometer.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Drzewiecki,Tadeusz M ; Phillippi,Richard M

Report Date : 14 Jul 1981

Pagination or Media Count : 6

Abstract : A fluidic oil viscometer for determining the degradation of machinery lubricating oils compares the viscosity of the machinery oil with the viscosity of another fluid, such as air. Both the viscosity of the air and the viscosity of the oil are sensed, using capillary-orifice combination sensors, and the air viscosity reading is amplified using a series of laminar proportional amplifiers to equalize its change in viscosity with that of oil. The outputs of the capillary orifice combination sensors are applied to two different pressure gauges, the difference between these two pressure gauges represents the viscosity breakdown. This difference will be independent of temperature. (Author)

Descriptors :   *Patents, *Viscosimeters, *Lubricants, Inventions, Viscosity, Air, Orifices, Capillary tubes, Pressure gages, Detectors, Comparison, Degradation

Subject Categories : Lubricants and Hydraulic Fluids
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE