Process involved in condition monitoring

Process involved in condition monitoring

Conditions monitoring is one of the maintenance methods which are used to assess the health and condition of equipments machines, systems or process by absorbing checking, measuring and monitoring several parameters. This technique is also called as equipment health monitoring.

1.     Identifying critical systems

2.     Selecting suitable techniques for condition monitoring

3.     Setting baselines

4.     Data collection

5.     Data assessment

6.     Fault diagnosis and repair

7.     System review

advantages and disadvantages and disadvantages of condition monitoring. Advantages

•        Improved availability of equipment

•        Minimized breakdown cost

•        Improved reliability Disadvantages

•        Gives only marginal benefits

•        Increased running cost

Sometimes difficult to organize

various levels of condition monitoring

Visual monitoring:

Machine components are visually inspected to determine their condition a.Sight Leaks

Smoke or casing colour change, indicating overheating. b.Smell Overheating

Leaks

c.Hearing Abnormal noise, indicating some malfunction.

d.Feel Abnormal vibration, indicating some malfunction, high casing temperatures, indicating overheating

Wear debris and contaminant monitoring.

1.     Direct detection of the debris in the oil in the machine optical methods.

2.     Electrically conducting filters.

3.     Inductive and capacitative methods.

4.     Collection of the debris in the machine for regular examination.

5.     Existing filtration system.

6.     Special filters.

7.     Magnetic plugs.

8.     Regular sampling of the lubricant for an analysis of its contents.

9.     Elemental (spectrometric) analysis.

10.                        Magnetic particle separation.

11.                        Automatic particle counting.

on-load and off-load testing used in condition monitoring

Condition monitoring can be done in two methods viz,off-line or on- line.In off-line condition monitoring,the machine is withdrawn from service and disconnected from its normal supply. Measurements

of system, monitoring equipment are built in or installed in series with the running