Condition Monitoring - Types and its details

                                                          Condition Monitoring 
Condition Monitoring To detect and localized particular components in the machine that is under degrading conditions and diagnose the fault. There are several condition monitoring techniques:-


 1.Oil analysis 
 2.Vibration monitoring, 
 3.Thermal Inspection, 
 4.Ultrasonic Inspection

 Oil analysis (OA):- Oil analysis (OA) is the sampling and laboratory analysis of a lubricant's properties suspended contaminants, and wear debris. OA is performed during routine preventive maintenance to provide meaningful and accurate information on lubricant and machine condition.



Oil analysis  parameters are

•       Viscosity

•       Total acid number

•       Water

•       Iron

•       Particle counts

•       Vibration Analysis:-

Vibrations occur because of the dynamic effects of manufacturing tolerances, clearances, rolling and rubbing contact between machine parts and out-of-balance forces in rotating and reciprocating members.

We can diagnose machine faults like

Imbalance

Misalignment

Loose Coupling

Bearing Defects / Wear

Gear Mesh

Consider these variables when analyzing vibration:

•       Direction, such as radial or axial

•       Amplitude, severity

•       Frequency, expressed in cycles per minute (CPM) or Hertz (Hz)—one Hz equals one second, or 60 CPM

Infrared Thermography:-  Infra-Red Thermography is a technique for producing a visible image of the invisible       (to our eyes). Infrared radiation is emitted by objects due to their thermal conditions. The amount of radiation  emitted by an object increases with temperature; therefore,  thermography allows one to see variations in temperature.


Why Thermography?

•       Non Contact

•       Rapid Scanning

•       Data can be recorded in differing formats

•       Images produced are comprehensive & reliable

             Ultrasound Analysis:- Low-frequency sound waves range in size from 3/4” (1.88  cm) to 56’                    (16.9 m)

        (Assuming the average hearing range from 20Hz to 20KHz) 


           High frequency (ultrasound) sound Waves range in size  from 1/8” (0.34 cm) To 5/8” (1.7 cm)

(Assuming ultrasound range from 20 khz-100khz).

                          Why Ultrasonic analysis? 

•       Locate the leak

•       Measure the Leak

•       Calculate costs

•       Calculate Greenhouse Gas emission reduction


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