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4 Benefits of OmniScan Software’s Updated DGS Functionality

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OmniScan® MXU version 4.4 software contains a major update to the popular DGS sizing calibration that brings new benefits. The updated wizard adds multiple features to help inspectors do their day-to-day jobs quickly and easily—S-scan correction, compatibility with standard linear phased array probes, DGS curves for every focal law, and the use of only one reflector for calibration.

See indications more easily with S-scan correction

The update adds the ability to visualize a depth corrected S-scan so that users can view the full S-scan in corrected colors. This means that two reflectors of the same size will return the same S-scan color independent of their depth or A-scan amplitude (typically orange = 80%).This feature helps users detect indications more easily by just looking at the S-scan.

OmniScan S-Scan
OmniScan S-Scan

The S-scan correction off (left) and on (right).

No need for dedicated DGS probes

With MXU 4.4 software, users can select any standard linear phased array probe to achieve DGS sizing—there’s no need to have a dedicated DGS probe. Simply select any linear probe you have on hand and start the DGS wizard. In the first step of the wizard, enter the elevation parameter of your probe for an accurate DGS curve calculation, follow the next set of steps, and you’re ready to go!

PA linear probe screen - OmniScan

Set the elevation of your PA linear probe.

DGS curves for every focal law

DGS curves are no longer limited to the primary inspection angles but are now available to all computed focal laws. In the past, having a 40–70° sectorial scan would give you only 3 DGS curves on the 45-60-70° angles. Now, on the same sectorial scan, you have access to 31 DGS curves, one on each focal law.

DGS curves for every focal law

DGS curves for every focal law.

One reflector, full calibration

The DGS sizing technique is particularly useful as it enables you to complete your full calibration with only one reflector. The reference curves are not built using multiple reference reflectors; instead, the curves are based on DGS diagrams that predict the echo response and attenuation of multiple reflector sizes over a particular sound path range in carbon steel. Using only one reflector reduces the price of your calibration block, as you don’t need a costly block with multiple reflectors.

If you already own an OmniScan MX2 or OmniScan SX flaw detector, you can download MXU 4.4 software now.

With these new features, we’ve added another tool to the toolbox for weld and metal integrity inspection.

Related Content

Download the DGS infographic

Read about other features of MXU 4.4


Joel joined Olympus in 2014 as a Product Application Leader in the OmniScan flaw detector team. He holds a B.Sc and a B.Eng, both in physics, and works to improve products and solve phased array applications in the OmniScan product line.

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