Underwater Thickness Measurement

Some corrosion survey applications involve situations such as measuring the thickness of support pilings or boat hulls that are submerged in water. While most standard contact, delay line, and dual element transducers can be briefly immersed in shallow water without problems, long-term submersion or deep submersion (deeper than approximately 2 meters or 6 feet) will eventually cause failure due to corrosion and water intrusion, especially in salt water.

For deep water marine application, specially waterproofed dual element transducers and equipment that are sealed against water intrusion under high pressure are normally used. As suggested above, these are available for use at depths up to approximately 100 meters or 300 feet. INTERCON has good application practice for underwater thickness measurement.