GE ROWA-WT Brochure

Measurement & Control

Krautkramer Testing Machines

Full Body Ultrasonic Wall Thickness Measurement of Tubes

ROWA-WT Series

The ROWA-WT is an ultrasonic phased array test system for online wall thickness measurement and lamination ﬂaw detection in tubes.

The ultrasonic coupling is realized by a rotating water jacket, generated by tangentially ﬂowing coupling water (GE patent). Due to the compact dimensions of the mechanics, the ROWA-WT system can be seamlessly integrated into an existing production line.

The tubes are fed into the test chamber one by one on linear tracks by means of a guiding and transport device. A lifting/ shifting table is required for installation of the test mechanism within the guiding and transport line.

ROWA-WT test mechanics

Rotating water jacket

Dimension dependent rubber seals at the inlet and outlet sides keep the water jacket within the test chamber and determine its free diameter. They also prevent water leakage during test and remove the water from the test object´s surface after the test.

Depending on the application and object diameter, up to 12 phased array probes are arranged circumferentially in a chamber.

A multiple number of neighbouring elements can be controlled in parallel and form the virtual probe. Due to sequential activation of virtual probes along the circumference, the ROWA-WT achieves up to 100% coverage of the rotating sound beam without mechanical probe rotation: The system does not contain any moving parts which results in overall robustness and easy maintenance.

One key advantage of the ROWA-WT is a short changeover time. No mechanical probe adjustment is necessary. Probes are adjusted electronically by recalling stored parameters – only the rubber seals have to be changed according to the diameter of the material under test.

The ﬁeld proven and reliable GE ultrasonic electronics processes all signals and carries out a separate evaluation according to ﬂaw type and position.

In order to avoid misinterpretation due to electrical interferences, noise suppression takes place by means of dual-threshold method prior to generating the inspection result: No test shot is lost, every single pulse is evaluated.

System Overview

System Electronics – Type USIP|xx

ATCA rack standard for high internal data rate: 5 Gb/s max. Card based architecture for scaleability and easy maintenance Parameter storage Automatic sensitivity check/adjustment Extensive monitoring functions, self-test and diagnostic support Control PC with Windows 7 64 bit operating system

Options

Pre-wetting system, integrated into ROWA mechanics Water circulation system Guiding and transport device Lifting- and shifting table

Test Speciﬁcations

DIN EN ISO 10893 API 5 CT, API 5C 2

Technical Speciﬁcations

Wall thickness measurement Lamination ﬂaw testing (6,3 mm, 6,0 mm and 3,2 mm FBH) Inner wall deformation testing Eccentricity measurement Test speed up to 2,2 m/sec. 100 % coverage Dimensional measurement (GEO): ID/OD/Ovality

Tube Diameter Range

ROWA-WT Typical diameter

240 30 - 180 mm 360 60 - 280 mm 480 120 – 373 mm 560 177,8 - 431 mm (other diameters on request)

Key Beneﬁts

Compact machine dimensions No mechanically moving parts -> low OpEx Contactless measurements Short changeovers High throughput

www.ge-mcs.com

GEIT-60014EN (12/14)

© 2014 General Electric Company. All Rights Reserved. Speciﬁcations are subject to change without notice. GE is a registered trademark of General Electric Company. Other company or product names mentioned in this document may be trademarks or registered trademarks of their respective companies, which are not afﬁliated with GE.