ASTM E2491 Phased Array Assessment Block is a general purpose Phased Array calibration block used for beam characterization and evaluation of system performance characteristics. Use it as baseline block to determine long-term instrument performance changes, generate DAC curves, and evaluate linear/angular resolution, focusing ability and beam steering capability. With a variety of targets, this small, lightweight block is also perfect for customer demonstrations of phased array ultrasonics capabilities.

Four (4) angled holes (30°, 45°, 60° and 75°) at 1/16" (.0625) diameter Array of 18 holes on 1" radius at .040" diameter. Angular separation between holes is 5.0°, with 2.5° of separation between the last two holes in the array. Array of 18 holes on 2" radius at 5/64" (.0781) diameter. Angular separation between holes is 5.0°, with 2.5° of separation between the last two holes in the array. Vertical column of 16 holes at .040" diameter with .120" of separation between holes. Angled row of 12 holes at 1/16" (.0625) diameter with .200" of separation between holes. Machine engraved tick mark at radii centerline. Machine engraved block description, alloy and unique serial no.