초록 ▼

An apparatus and method for detecting a leak in a closed, fluid transfer system, specifically a hydraulic system, by comparing the actual rate of fluid level change in the fluid reservoir to the rate of fluid level change computed from the rate of flow and capacity of the system wherein an actual ra

An apparatus and method for detecting a leak in a closed, fluid transfer system, specifically a hydraulic system, by comparing the actual rate of fluid level change in the fluid reservoir to the rate of fluid level change computed from the rate of flow and capacity of the system wherein an actual rate of level change in excess of the computed change indicates leakage from the system. An apparatus for determining direction of flow through a conduit and method using the apparatus in which a magnet on a piston slidably engaged inside a valve body is caused to move thereby causing a variance in a measured inductance indicating the direction the piston has moved.

대표청구항 ▼

An apparatus for detecting a leak in a hydraulic system said leak detecting apparatus comprising: (a) means for determining the actual rate of change of level in a hydraulic fluid reservoir, (b) means for determining a predicted rate of change of level in the hydraulic fluid reservoir based on the c

An apparatus for detecting a leak in a hydraulic system said leak detecting apparatus comprising: (a) means for determining the actual rate of change of level in a hydraulic fluid reservoir, (b) means for determining a predicted rate of change of level in the hydraulic fluid reservoir based on the capacity of the hydraulic system, and (c) means for comparing the actual rate of change of level in a hydraulic fluid reservoir to the predicted rate of change of level in the hydraulic fluid reservoir wherein an excess of actual rate of change of level over predicted rate of change of level indicates a leak in the hydraulic system.