Detailed Overview

A purpose-built diver-held ultrasonic underwater thickness gauge (UTG) designed for subsea inspections, fully pressure tested and depth rated to 300 meters. It uses the Multiple-Echo technique to take accurate metal thickness measurements through marine growth and thick protective coatings (up to 20 mm), without the need for removal. The solution enables reliable and fast underwater corrosion assessment of ships, offshore platforms, and subsea pipelines, preserving marine asset longevity and meeting class society requirements.

Designed for professional divers, this gauge provides easy, accurate thickness measurement up to 300 meters.

• This robust, pressure-tested instrument is built to withstand depths of up to 300m (984 ft), providing reliable Multiple-Echo measurements through coatings and heavy corrosion.
• It features a large, bright LED or AMOLED display for easy reading underwater, even in poor visibility conditions, and is operated via simple magnetic or function push buttons.
• The gauge offers Multiple Measuring Modes (Multiple-Echo, Single-Echo, and Echo-Echo) to handle various levels of corrosion, coating thickness, and material types.
• The package typically contains the main gauge body with a safety strap, an underwater probe with a cable (fixed or remote), an umbilical or diver-held mount, and a hard transit case.

Top Features & Benefits

• Specifically designed for underwater use by commercial divers (Diver-Held and often ROV compatible).
• Waterproof to 300 meters (984 ft) (IPX8 continuous rating) with rugged, shock-proof construction.
• Multiple-Echo technology to ignore coatings (up to 20 mm) and measure only the true metal thickness.
• Large, bright LED/AMOLED display visible from all angles in poor subsea conditions.
• Self-Verification of measurements and Auto Probe Recognition (APR) for confirmed accuracy.
• Optional HelmetView™ display or Topside Repeater for surface monitoring and recording.
• Data Logging capability (up to 5,000 readings with A-Scans and depth).

Primary Uses & Functions

Specifically designed for the professional diver to perform accurate metal thickness surveys (UTM) in both shallow and deep underwater sites (pressure rated up to 300m), for the purpose of corrosion and wastage assessment in compliance with Class Society requirements.

Real-World Applications

• Underwater Thickness Measurement (UTM) in subsea environments on all common engineering materials.
• Inspection of ship hulls (for UWILD/In-Water Surveys), offshore platforms, and subsea pipelines for metal loss.
• Thickness measurement on marine pilings, piers, bridges, and lock gates.
• Used by commercial divers for structural integrity and corrosion monitoring, providing reliable data for maintenance planning.

Industry Solutions

• Oil & Gas (Offshore platforms, FPSOs, subsea pipeline inspection).
• Marine & Shipping (Ship hull surveys and Classification Society inspections).
• Civil Engineering (Inspection of underwater bridge supports, dams, and harbor structures).
• Power Generation (e.g., dam sluice gates, offshore wind farm foundations).

Technical Specifications

Compatibility

• Designed for professional divers, often with a wrist-mountable option for hands-free use.
• Compatible with Single Crystal (Multiple-Echo) and Twin Crystal (Single/Echo-Echo) probes for varied applications.
• Can interface with Topside Repeater and logging software (e.g., CygLink) via umbilical for surface verification and reporting.

What’s In The Box?

• Underwater Thickness Gauge Unit (300m rated, e.g., Cygnus Underwater or Cygnus DIVE).
• Fixed or Remote Subsea Probe and cable assembly.
• Subsea Calibration Block (e.g., 15 mm or similar).
• Rechargeable battery packs and dedicated charger.
• Dive lanyard, protective rubber boot, and a Sealed Transit/Carry Case.

Also Known As

Subsea UT Meter, Diver Thickness Tester, Wet Thickness Gauge, Diver UTG, Multiple Echo Subsea Gauge, Underwater UTM Meter.