Condition monitoring is technique used to monitor the condition of an equipment or machinery without interrupting it working. Condition monitoring techniques are carried out when the machine is in operation. Most widely used condition monitoring techniques include vibration monitoring, motor current signature analysis, noise monitoring and wear debris analysis. Vibration monitoring detects the presence of unbalanced forces generated due to misalignment, damaged bearing, electrical defects and resonance. Motor current signature analysis is used to determine the defects in motor by analyzing the spectrum generated by the tongue tester. Noise monitoring is performed with the help of acoustic noise meter and wear debris is done to determine the contamination level of lubrication oil in various engines. These techniques are found to be highly efficient in determining the defects of the systems like pump at an early stage. A detailed study on these condition monitoring techniques has been carried out in this paper and also the methods for analysis of the results obtained from these tests are also discussed.
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