The DAC Calibration Block is designed for establishing Distance Amplitude Correction curves in ultrasonic testing (UT). Featuring reference holes at defined depths, it helps technicians set inspection sensitivity and compare ultrasonic responses at different sound-path distances during shear-wave and compression-wave inspections.
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Support consistent ultrasonic inspection with the DAC Calibration Block. Used to establish Distance Amplitude Correction (DAC) curves, this reference tool helps NDT technicians account for changes in echo amplitude as sound travels different distances through a material. The block features reference holes at specified depths, providing known targets for setting up the ultrasonic instrument. Responses from these targets are used to construct a DAC curve, enabling technicians to compare inspection indications against a reference level across the required testing range. Suitable for shear-wave and compression-wave inspections, the DAC Block supports equipment setup and sensitivity verification for weld and component testing. It can also support Time Corrected Gain (TCG) setup where permitted by the instrument and inspection procedure. The block material, thickness and reflector arrangement should be selected to suit the component being examined and the applicable inspection requirements. Contact our team to discuss availability, dimensions and the right DAC Block configuration for your ultrasonic testing application.
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