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This document specifies the characteristics of probes used for non-destructive air-coupled ultrasonic testing with centre frequencies from 10 kHz to 3 MHz, with focusing or without focusing means. This document refers to probes based on the piezoelectric effect. Air-coupled probes based on other physical principles can be characterized according to this guideline if it is judged as appropriate, but adaption of tests can be necessary.
This document covers tests under standard environmental conditions. The procedures given in the standard can be applied to extended environmental conditions e.g. higher air pressures, but additional tests can be necessary.
This document excludes periodic tests for probes.
If parameters specified in this document are to be verified during the probe’s lifetime, as agreed upon by the contracting parties, the procedures of verification for these parameters can be selected from those given in this document.
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