Abstract: Systems and methods of monitoring a condition of a pump. One or more characteristics of a fluid flow of a fluid is monitored in a flow path of the pump to determine a fluid leakage flow rate. The fluid leakage flow rate is compared to a nominal flow rate for the pump. The pump efficiency for the pump is determined based on the comparison of the fluid leakage flow rate to the nominal flow rate. The pump efficiency is compared to a pump efficiency threshold and the condition of the pump determined based on the comparison.

Abstract: Systems and methods determine a pump efficiency of a fluid pump. A characteristic of fluid flow of a fluid is monitored at a first point and at a second point on a flow path of the fluid pump. Fluid leakage that is a difference in the characteristic of the fluid flow at the first point and the second point is determined. The fluid leakage is compared to a nominal fluid flow for the fluid pump. The pump efficiency for the fluid pump is generated based on the comparison of the fluid leakage to the nominal fluid flow. The pump efficiency is an indicator as to an amount of fluid leakage that is leaked from the flow path as compared to the amount of fluid leakage when operating with the minimal amount of fluid leakage.

Abstract: A pump monitoring device is configured to be connected to a case drain of a pump. The device includes a manifold having an inlet for connection to the case drain. A flow rate sensor generates a signal indicative of a flow rate of fluid in a fluid path. The flow rate sensor includes a temperature sensor, a heater, and a sensor barrel. The heater heats the sensor barrel while in fluid communication with the fluid. A pressure sensor generates a signal indicative of a pressure of the fluid.