Do You Make These Mistakes in Condition Monitoring?

The Problems with Condition Monitoring

For condition monitoring, to be a ‘success’ as a maintenance strategy, assumes that the equipment is monitored on a frequent and regular basis; typically once-per-month. However, the reality is often that it is considered less important than other tasks assigned to maintenance staff.

In the case of the offshore Oil

Exactly What is Condition Monitoring?

Put more succinctly, Condition Monitoring (or “CM”) < Golden Goose Superstar Sneakers a href=””>Parajumpers Denali Jacket Dam is the process of monitoring a parameter (or parameters) which reflect the condition or performance of a piece of equipment, in order to identify any significant degradation, which is indicative of a developing fault, or an unacceptable drop in equipment performance.

The key word is ‘monitoring’ in the context of condition monitoring. This conditional monitoring task requires regular checks of the selected key parameters, which have been selected, to be in a position to identify the onset of a failure or drop in performance. Then subsequently schedule the appropriate maintenance intervention, in a timely manner, to prevent failure and avoid its consequences. CM, which is a non-invasive technique, which is usually employed on rotating equipment such as: pumps, compressors, fans, turbines and electric motors etc. The ultimate aim of is to only perform maintenance work only when necessary.

The most common technique used in condition monitoring is vibration analysis, where measurements are taken on machine bearing housings with transducers – which are normally accelerometers, in triaxial directions, as shown below. This system employs portable battery-powered instruments called data collectors/analysers; this methodology is referred to as an “offline” system, using instruments such as the Adash A4900 VA4 Pro 4-channel unit below.

Accelerometer Adash A4900 VA4 Pro 4-channel unit

However, on more critical machines, eddy-current displacement transducers are used, which directly observe the rotating shafts to measure the radial and axial displacement of the shaft as shown below. These displacement transducers are permanently mounted on the machine housings, and monitor the condition of the machine on 24/7 basis, and is known as an “On-Line” system.

Eddy Current Displacement Transducer