Guidelines for Probe Frequency Selection
The probe frequency will be determined by the minimum thickness you need to measure. However, the lower the frequency the more effective the ultrasound will be at penetrating coatings and corrosion. The S2C 2.25 MHz 13 mm (0.5 inch) INOX probe is recommended for the majority of applications as it performs the best on corroded metal and through thick coatings.
Three Versatile Measuring Modes
Multiple-Echo mode uses three error checked back wall echoes to provide the most reliable and accurate remaining thickness measurements, with no need to remove coatings (up to 20mm/0.8 in thick).
Single-Echo mode is ideal for measuring uncoated metals with heavy front and/or back-wall corrosion. Also effective on a range of cast metals, plastics and composites.
Echo-Echo mode works best for measuring heavily corroded metals through thin coatings of up to 1mm/0.04in thick, ideal for measuring painted metals with heavy back wall corrosion.