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Asset Condition Monitoring

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Your factory floor is a noisy place where machinery failures are muted by the roar and rumble of production.

Working steam traps preserve pure, safe and energy-efficient steam

SDT lets you hear over the commotion and lock your senses onto the next unanticipated catastrophe before it happens.

Condition-based maintenance represents a change to the way maintenance tasks are scheduled. Instead of performing calendar-driven tasks, maintenance is carried out only when the condition of an asset changes. Ultrasound technology provides you with data about the health of both rotating and non-rotating assets, warning you well in advance that a failure is near.

Ultrasound testing with the SDT270 and SDT200 is a key element of your asset condition management strategy. It helps you plan your maintenance tasks, execute only necessary work orders, and leave the culture of reactive maintenance behind you.

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Ultranalysis® Suite

Powerful software to manage intelligent hardware

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Low-Speed Rotations And Non-Rotating Assets

Many of your processes use large machines that rotate at low speeds. Determining failure stages of low-speed bearings and gearboxes can be difficult with vibration analysis. SDT’s ultrasound solutions are the perfect companion to vibration analysis. Capture dynamic sound signals and perform failure-mode analysis in the Time Domain using UAS (Ultranalysis Suite Software).

Non-rotating assets such as air leaks, steam traps and electrical systems all provide condition monitoring data that reveal the health of your factory.

Four Condition Indicators (4CI)

SDT’s ultrasound solutions provide insight beyond the single decibel.

In the world of asset condition management you need dependable data to inform you about the condition of your production machines.

Before 4CI, ultrasound inspectors trended ultrasound data based on a single decibel measurement taken at an arbitrary point in time. Capture the measurement at the wrong time and the defect was either missed, or amplified beyond reality. 4CI allows inspectors to set the acquisition time prior to capturing the measurement. The result is a more representative and accurate collection of data.

By monitoring these four numbers on your ultrasound solution, you’re able to keep a pulse on the health of your facility and move from a reactive maintenance program to a condition-based approach.

Condition Indicator 1 – Overall RMS

averages the entire sample captured and returns a single RMS decibel value. The Overall RMS is used to trend the condition of a bearing throughout its lifecycle.

Condition Indicator 2 – MAX RMS

is the highest of the sub RMSs calculated every 250ms. Compared with the RMS, it is used to find out if the signal is stable or if it varies, but it is also not very sensitive to the detection of impact. It is particularly useful when testing steam traps.

Condition Indicator 3 – Peak Value

is the maximum instantaneous value recorded during the measurement cycle. It is used primarily for impacts produced by early stages of failure in bearings and gears. It is also useful for modulating steam traps.

Condition Indicator 4 – Crest Factor

is a ratio between the Peak Value and the RMS value. It is useful to estimate the failure severity for bearings and gears. It also helps predict remaining useful lifecycle. When an asset is entering failure mode, the CF value will spike even if the RMS remains moderate. The CF levels drop as failure stage advances because the Peak Value remains high as the RMS advances.

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