In an ultrasonic thickness gauge, ultrasonic waves emitted from a sensor called a probe are reflected on the opposite side of the object to be measured. Measure the propagation time until it returns to the probe again and calculate the thickness The equation H (thickness) = v (velocity of sound) × t (propagation time) ×… Continue reading AD-3255 Measurement Principle of Ultrasonic Thickness Gauge (Sound Velocity Adjustment)