MMX-6 DL Ultrasonic Thickness Gauge
An additional important consideration when measuring laminates, is that any included air gaps or pockets will cause an early reflection of the ultrasound beam. This effect will be noticed as a sudden decrease in thickness in an otherwise regular surface. While this may impede accurate measurement of total material thickness, it does provide the user with positive indication of air gaps in the laminate.
•Measuring Through Paint & Coatings
Measuring through paints and coatings are also unique, in that the velocity of the paint / coating will be significantly different from the actual material being measured. A perfect example of this would be a mild steel pipe with approximately .025” of coating on the surface. Where the velocity of the pipe is .2330 in/µsec, and the velocity of the paint is .0900 in/µsec. If the user is calibrated for mild steel pipe and measures through both materials, the actual coating thickness will appear to be 2.5 times thicker than it actually is, as a result of the differences in velocity. This error can be eliminated by using a special
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