Abstract: A method for monitoring a condition of a piston rod of a reciprocating compressor is provided. The piston rod having a length defined between a piston end and a crosshead end. The method includes positioning a first probe with respect to the piston rod along a x-axis and positioning a second probe with respect to the piston rod along a y-axis coplanar with and substantially perpendicular to the x-axis. A current ringing vibration amplitude greater than ten times a maximum of a one-hour average and a noise floor at a ringing frequency is detected, and a bent rod condition is diagnosed.

Abstract: A system for determining impulse events of an asset by sampling and digitizing a complex signal sensed by a transducer monitoring the asset into a digitized signal with a sampling device operatively coupled to the transducer, transforming the digitized signal into a plurality of maximum and minimum value pairs each pair having an associated location correlated to a relative movement of a moving member of the asset with a processor operatively coupled to the sampling device, and a monitor and/or a computerized condition monitor having the processor integrally formed therewith or operatively coupled thereto for comparing at least one of the plurality of maximum and minimum value pairs and its respective location to at least one known value for determining impulse events based on the comparison step for providing asset protection.