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These calculators are for educational purposes only. Always verifiy the results or consult your radiation safety officer if unsure.
Note: Changing the "K" value will calculate the edge of the beam where the sound pressure is equal to some value for example -6dB from max pressure. A "K" of 1.22 is 0 dB. 0.70 is -6 dB.
When setting your PRF for an inspection, ensure your Time Interval ($\Delta t$) is longer than the total time required for the sound to travel to the back wall and return to the transducer. If $\Delta t$ is shorter than the material travel time, the next pulse will fire before the previous one has returned, causing phantom signals.
Correction Factor: If your software reports 498mm but the actual distance was 500mm, your system is "short." Use the New PPR calculated above to adjust your software settings.
Subsection C Relocation: If you are using encoders for Article 13 (Acoustic Emission), this calibration is now governed under the new Subsection C structure.
Scan Resolution: Ensure your "Theoretical Step Size" does not exceed the maximum allowed for your procedure (often 1mm or less for high-sensitivity phased array scans).
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