NDB Technologies AE-150 - Data Selection; Localization

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AE- 1 5 0 s y s t e m – U s e r M a n u a l

Data selection

Once many vectors and pinpoints are taken and accepted, a common crossing

point should appear and become obvious. Despite this fact, some pinpoints

and/or vectors could be away from the common crossing point. This

phenomenon is normal and may be due to many factors, such as acoustic

reflections. To filter out stray vectors and pinpoints, follow the steps below:

 Click on the Data Analysis > Data Selection tab.

 Check the Filter Enable checkbox and select desired filtration

parameters (Date/time, Waveforms, PrPD, Vectors, Pinpoints and

sensor position).

 Browse the result list and select the desired acquisitions.

Press and hold the keyboard control key to make selections from the

list or use the shift key for grouped selections.

 Click the Flag button to keep the selected acquisition(s), or click the

Unflag button to discard them.

Localization

Once data selection is completed, the final localization process can be

performed. To do so, follow the steps below:

 Click the Data Analysis > Localization tab.

 Select the vectors and pinpoints to be used in the Flagged List.

 Click on the Keep button to keep those vectors and pinpoints. A 3D

graph representation will be present on the right side. Clicking and

moving the mouse cursor on the graph allows a 3 dimensional viewing

while scrolling allows zooming.

 To discard a vector or pinpoint, simply select it in the Flagged List, and

click the Drop button.

 Localization statistics will be displayed below the 3D graph. It includes

the number of direct pinpoints, number of vector intersections and

their locations within the transformer tank.