Ultrasonic thickness gauge

The ultrasonic thickness gauge allows to execute echometric ultrasonic thickness measurements of metal samples. The face of the metal element to be tested must be smoothed by removing any trace of impurity or coating (by grinding the surface) to ensure adequate contact between the ultrasonic probe and the sample. The thickness gauge is calibrated on a reference block supplied and the instrument is configurated for the material under examination. The test is carried out applying the coupling gel and holding the probe firmly, ensuring contact with the sample to be investigated. The measurement of the time of flight of the ultrasonic wave introduced into the material is thus carried out, estimating from this and the speed of propagation in the selected metal the thickness of the metallic element subjected to testing.
Reference standard: UNI EN ISO 16809: 2019.