| 摘要 |
A meter for continuously monitoring the viscosity of lubricating fluids. A fluid conduit extends across the element or bearing being lubricated to employ the differential pressure of the lubricant across that element. The fluid conduit includes an orifice in series with a capillary. The pressure differential across the capillary is then measured to provide an indication of viscosity. A shunt capillary controlled by a differential pressure relief valve is positioned parallel to the main capillary to reduce the sensitivity of the meter in areas of high viscosity. Protection against significantly heating or cooling the viscosity of the fluid provided to the meter is accomplished by placing the shunt capillary or a jacket of lubricating fluid about the main capillary.
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