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EPOCH 1000 Series Procedure Multi-Angle Feature

EPOCH 1000 Series Procedure Multi-Angle Feature. Feature Overview and Activation. General Overview. Available in Phased Array mode only User designates any three angles (focal laws) within the S-Scan range

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EPOCH 1000 Series Procedure Multi-Angle Feature

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  1. EPOCH 1000 Series ProcedureMulti-Angle Feature

  2. Feature Overview and Activation

  3. General Overview • Available in Phased Array mode only • User designates any three angles (focal laws) within the S-Scan range • The A-scans from each these three angles are overlaid on top of each other in the A-scan • User can view all three A-scans at the same time • Each individual angle is color coded • Perfect when using conventional sizing methods requiring evaluation at 45, 60 and 70 degrees!

  4. Test Block EP1000-PABLOCK-1 Couplant D-12 Required Items • Transducer and Wedge • 5L16-9.6X10-A10P-P-2.5-OM probe • SA10P-N55S wedge

  5. Parameter Setup • Once unit has been properly calibrated… • Set Range to 3in • Set Gain to 18dB • Set Angle to 45 degrees

  6. Feature Activation • Under the Display Setup menu: • Press P2 A-Scan Setup • Change “AScan” to “Multi-Angle” • Choose the 3 angles for the Multi-Scan AScans • Press ESC to return to the home screen • NOTE: Selecting angles of 45, 60, and 70 degrees allows you to see all three standard conventional angles at once on a single AScan!

  7. Multi-Angle A-Scan • Set up for detection of large notch on PA block • S-Scan shows multiple reflectors from notch, corner of block, etc • On the S-Scan, you can see multiple flaws at different angles but can only see one angle on the A-Scan

  8. Multi-Angle A-Scan (cont.) • Switch to the Full A-Scan view • Even though the selected angle is 45 degrees, multiple angles are visible on a single A-Scan!

  9. Focal Law Adjustment • When in coarse adjustment, adjusting the focal law will scroll through the 3 selected angles (45, 60, 70 or all focal laws) • Adjusting the focal law in fine adjustment will adjust the angle over the S-Scan range in 1 degree increments and so on…

  10. A-Scan Colors • The angles in the A-Scan are color coded • Red = Lowest number angle (e.g. 45) • Yellow = Middle number angle (e.g. 60) • Green = Highest number angle (e.g. 70) • The active/selected angle is ALWAYS White • The remaining angles have the same colors as listed above White=45 Yellow=60 Green=70 Red=45 White=51 Yellow=60 Green=70

  11. Multi-Angle-Single Toggle • It is possible to toggle between single A-scan (standard) mode and Multi-Angle mode after activating the Multi-Angle feature • In the PA DISPLAY group menu • Press P2 [Ascan] • Use the up and down arrows or knob to toggle between Single and Multi-Angle

  12. Demonstration Procedure

  13. Notch Detection • Set angle to 45 and peak up on the small notch on block • The 45 degree waveform is White • Other reflections from the notch at 60 and 70 degrees are shown in yellow and green

  14. Notch Detection (cont.) • Back away from notch, and peak up the yellow waveform (representing 60 degrees) • Even though 45 degrees is the active angle, you can measure signals at the other selected angles!

  15. Notch Detection (cont.) • Switch angle to 60 degrees • The peaked up waveform that was yellow will now become the white angle! • Reflections from 45 and 70 degrees would now be shown in red and green

  16. Feature Summary • Multi-Angle is designed as a basic, “first-step” benefit of phased array in conventional angle beam applications. • Utilizes full A-scan view while still displaying information at 3 selectable inspection angles • Can be less intimidating and easier to read than the S-Scan image, providing an excellent first step towards implementing phased array in a conventional inspection

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