TPT September 2010

T echnology U pdate

Advanced ultrasonic thickness gauge resolution provides readability in bright sunlight or complete darkness. The simple keypad can be operated with the left or right hand, for easy access to all important functions.

OLYMPUS NDT has introduced the handheld 38DL Plus ultrasonic thickness gauge. The instrument is compatible with the complete range of Olympus dual element and single element transducers, making it an all-in-one solution for many thickness gauge applications. Applications can range from wall thinning measurements of corroded pipes using dual element probes to very precise thickness measurements of thin or multilayer materials using single element transducers. Ultrasonic thickness measurements are accurate, reliable and repeatable, and instant readings can be achieved from one side of a material, making it unnecessary to destroy the part. The Olympus 38DL Plus is built for use in a wide range of weather conditions and difficult inspection environments. Its sealed case is designed to meet IP67 requirements to withstand the rigours of very wet or dusty environments, while the transflective colour LCD with full VGA

When used with single element transducers, the 38DL Plus makes accurate thickness measurements on many materials including metals, plastics, composites, glass and ceramics. It also offers an optional high resolution feature that allows very precise measurements with a resolution of 0.0001" or 0.001mm. The multilayer measurement option provides up to four simultaneous thickness readings of a multilayered material. The optional high penetration feature makes measurements on very thick or sound- attenuating materials such as cast metals, rubber and fibreglass. For use with single and dual element transducers, the 38 DL Plus offers standard features such as sound velocity readings, time-of-flight readings, differential mode, reduction rate mode, and material temperature compensation. The 38DL Plus provides internal storage of inspection data of more than 475,000 thickness readings or 20,000 waveforms in various file formats. A Micro SD card allows the export of files in text or CSV formats and the ability to exchange inspection data in the field. The GageView Interface Program allows transfer of data with both standard USB and RS-232 ports.

“This innovative instrument signals a new era in ultrasonic thickness gauges,” commented Steve Labreck, product manager for thickness gauges at Olympus NDT. “The fact that the 38DL Plus can be used with dual (2 to 10MHz) and single element transducers ranging from 0.5MHz to 30MHz solves the problem of having to buy two gauges, one for corrosion applications and one for precision thickness measurements.” The 38DL Plus boasts powerful standard thickness measurement features and specialised software options. For corrosion detection applications, the gauge offers Thru-Coat ® and Echo-to-Echo to measure thickness with no need to remove paint and coatings, time-based B-scan that converts live thickness readings into cross-sectional drawings, and the patent-pending V-path Builder to build custom V-path compensation curve for dual element probes. In addition, the unit offers the optional boiler tube Oxide/Scale feature to measure the oxide/scale build- up inside boiler tubes, and EMAT capability to measure the wall thickness of boiler tube thickness without the need to remove external scale built-up.

Olympus NDT – USA Fax: +1 781 419 3980 Website: www.olympus-ims.com

The Olympus 38DL Plus ultrasonic thickness gauge

TUBETECH CORPORATION LIMITED TUBETECH WUHU MANUFACTURING CO.,LTD

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S eptember 2010

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