A Guide to Underwater Thickness Gauges
What is an Ultrasonic Thickness Gauge?
An ultrasonic thickness gauge is a piece of industrial equipment used to acquire an accurate thickness measurement of a variety of metals, ignoring any coatings. Thickness gauges allow accurate and reliable measurements to be taken in a non-destructive manner, and without requiring access to both sides of the material. For example, they can be used to measure the thickness of a pipe without needing access to the inside of the pipe.
Available in a selection of models for differing circumstances and environments, these ultrasonic thickness gauges measure the amount of time it takes for sound to travel through a material, and this information is then used to calculate the material's thickness.
Underwater Thickness Gauges
Cygnus Instruments are the pioneers of the original multiple echo ultrasonic thickness gauge and specialise in creating ultrasonic thickness gauges specifically for performing thickness surveys in a diverse range of situations. This includes underwater testing for such issues as corrosion, possible faults or damage, and underwater surveys for offshore drilling platforms, marine and shipping vessels and corrosion testing of oil and gas pipelines.
To increase usability Cygnus created the first ever wrist-mounted underwater thickness gauge, the Cygnus DIVE, which frees up the divers hands allowing them to carry out their work more efficiently, and the large bright LED screen makes for easy viewing of the results captured.
Underwater thickness gauges are battery-powered and designed with ease of use in mind. The Cygnus DIVE is the smallest and lightest underwater thickness gauge on the market and has just two buttons which allow for quick and easy menu navigation, and its intuitive design enables engineers to easily instruct divers on how to use the equipment and how to perform a metal thickness test accurately.
What are Underwater Thickness Gauges for?
Utilised by professional divers and engineers to undertake sub-sea surveys, the underwater thickness gauge is commonly used to carry out maintenance inspections and corrosion checks on metal structures in the ocean, such as ships' hulls, underwater pipelines, offshore structures, piers and bridges.
Many ultrasonic thickness gauges ignore surface coatings which allows for a more accurate measurement to be acquired. Some models have the added convenience of calibration buttons and can be used to a depth of 300 metres, enabling them to be employed for a wide range of sub-sea tasks without the need for complex and time-consuming set-ups.
Thickness Tessting Data
Once surveys have been carried out, the collected data can be transferred to an external device to allow for in-depth analysis of the results. The results of the survey are used to analyse damage and assess reconstruction work that may be required. The underwater thickness gauge has become an essential piece of testing equipment that greatly reduces time spent on an inspection, and allows regular on-going maintenance in a cost effective manner.
Using good quality equipment is essential for recording accurate information when conducting underwater surveys. The technology used in underwater thickness gauges is specially designed to carry out incredibly precise measurements, allowing one to work to the highest standards in hazardous, unpredictable environments such as structures at sea, protecting both the structure and the surrounding environment from unnecessary, costly disasters.
Cygnus Instruments specialise in creating ultrasonic thickness gauges specifically for performing thickness surveys for a diverse range of situations. This includes underwater testing for such issues as corrosion, possible faults or damage to underwater surveys that include offshore drilling platforms, marine and shipping vessels and thickness testing for oil and gas pipelines. To increase usability, Cygnus created the first ever wrist-mounted ultrasonic gauge, the Cygnus DIVE, which frees up divers' hands and allows them to carry out their work more quickly and efficiently.
The Cygnus DIVE is the smallest and lightest underwater thickness gauge available, with a bright LED display that means divers won't have to adjust their helmet light.