DEFECTOMAT : Eddy Current Testing Equipment (Division TS)

The top model for eddy-current testing with through type coils.

The newly introduced instrument system, based on Windows technology, allows convenient operation and uncompromising network connectivity.

Modern touch screen technology and application wizards simplify dialogue and reliably prompt the operator to ensure correct instrument settings.

The system uses the networking capability and multitasking power and performance of Windows operating system. Thus, FOERSTER allows access to the test instrument from any number of computer stations simultaneously, even if interests differ, such as current test status, test result of the last job tested or a lot tested last month for reasons relating to investigations

This new compact instrument is the successor to the globally successful Defectomat C and CP.

One of the features we offer is the fully optional 2-channel evaluation. This allows the simultaneous use of the differential and absolute channel. It also allows for 2-frequency applications and simultaneous signal evaluation in the eddy current and FERROMAT channel.

The DEFECTOMAT CI provides state-of-the-art data communications featuring full network integration, support of USB peripherals, XML log structure, and remote control of the settings.

Other features include, password-protected operating levels, unlimited settings archive, easy to read color screen, constant display of the most important test parameters, and remote service via telephone modem or internet log-in.

The compact instrument for eddy-current testing with through-type coils for (virtually all) applications.

As the successor instrument to the legendary DEFECTOMAT C, over 2,000 of which have been sold worldwide, it continues the instrument's triumphant advance. Over 500 DEFECTOMAT CP instruments are currently in use. This single-channel test instrument incorporates all the features required for automatic testing, e.g. interfaces for the line-related sensors and actuators for speed, flaw marking, sorting and saw control. Printer and computer interface allow documentation in the form of a hardcopy report or export of test results and setting data to other computer systems.

For use on tube welding lines, an absolute channel is available as an option. Optionally, a corresponding evaluation module is available for testing copper tubes in accordance with EN 1971.

Today's second generation of the DEFECTOMAT CP has a modern TFT color display which presents the concurrent test result, the test evaluation and the essential setting parameters at a glance even more impressively than on the monochrome predecessor model.

The compact instrument for eddy-current testing with through-type coils as an Economy Model.

It is only slightly less fully featured than the DEFECTOMAT CP. It is also fully suitable for line integration.

It features a high-resolution, gray-scale monitor.

A printer interface is provided for documentation but no computer interface is provided.

An absolute channel can be added as an option for use on tube welding lines. The DEFECTOMAT EP is the typical, autarkic, stand-alone test instrument.

The Defectomat EZ is an innovative addition to Foerster's industry-leading family of eddy current testing instrumentation.

Typical in-line testing applications include drawing and rolling mills, welded tube lines, hotwire and rod mills, finishing lines, grinding lines and component manufacturing operations. Use of the Defectomat EZ will provide improved quality through 100% continuous automatic inspection and by eliminating the subjectivity of visual inspection techniques. When used early in the production process, the Defectomat EZ can reduce scrap, eliminate further processing of defective material and improve productivity. This allows you to improve quality, increase profitability and ensure customer satisfaction.

The Foerster Ferromat EZ detects ferrous particle inclusion in all nonferrous metals. When installed directly in rolling or drawings lines with continuous throughput, it will provide critical information on the rolling/drawing process and on product quality.

The Ferromat EZ is used extensively in the copper industry to predict drawability and to improve process productivity. The Ferromat EZ module was designed for independent operation, or for integration with a Defectomat EZ, MicroDAM and computer for test data acquisition, product quality assessment and manufacturing process control.

The module for eddy-current testing with through-type coils, reduced to the essentials.

Extremely easy-to-use operating controls, unidimensional signal display in the form of LED bar graph, Yes/No sorting.

Enhanced operating convenience and result display by PC connection in conjunction with the eddyWin software package. Easy integration in existing control cabinets.

The production/testing line control also performs the task of control and result forwarding for the EC module.

All these coils are transformational coils with single or multiple differential windings. Each coil is also supplemented with an absolute winding which is generally evaluated only when testing longitudinal seam-welded tubes for detection of unwelded tubes. Through-type coils must be adapted to the geometry of the test material. The distance of these coils from the material surface should be only a few millimeters. Thus, besides the wide variety of round coils in the
diameter range 0.2 to 170 mm and segment coils for diameters of approx. 10 to 180 mm, there are also oval and rectangular coils, in addition to flat coils covering tracks of various widths. Probes with a track width of only a few millimeters are also used.

If ferromagnetic material is to be tested with the DEFECTOMAT, additional DC field magnetization is generally needed to suppress noise signals resulting from permeability variations. This magnetization facility may take the form of a permanent magnet or an electromagnetic yoke, depending on the required intensity. If testing is to be performed only partially with segment coils, magnetization must also be built up partially as well. This results in various sensor systems (extended coil holders) for the various applications.

Magnetizing yokes (M 40, M 90 M140 and M170) are available for testing ferromagnetic materials. Encircling coils are generally used. Size-adapted steel nozzles are required for magnetization, and these also provide a certain degree of protection for the coil since they have a somewhat smaller diameter. Segment coils may also be used in these yokes if only partial testing is required.

Solid stock can be magnetized only up to moderate cross-sections (diameter approx. 60 mm). On the one hand, the yoke field strengths do not suffice for homogeneous magnetization through to the core. On the other hand, the magnetized bars can no longer be demagnetized feasibly. Thirdly, magnetized, large cross-sections can no longer be transported through the yokes with the conventional conveying equipment since this would require excessive extraction forces.

A special-purpose yoke M 22 is available for cramped conditions for small dimensions up to 22 mm.

The power supply for these electromagnetic yokes takes the form of the so-called yoke current box
(6-stage).

Under certain circumstances, permanent magnetization may suffice for small cross-sections or for austenitic materials. Two versions are available for this purpose for material up to 12 mm and material up to 40 mm diameter, P 12 and P 40.

Segment coil holders with electromagnetic yoke LSM 180 with permanent magnetization LSP 180 are available for partial testing with partial longitudinal magnetization

Special versions are available for dimensions > 180 mm.

Coil holders SH 180 are available for testing non-ferromagnetic materials.

A stand ensures that all coil holders are height-adjustable.

Coil holders H 40 and H 90 are available for encircling testing of non-ferrous metals in the diameter range 0.2 to 90 mm.

Diameter-adapted guides made of plastic with a somewhat smaller diameter offer a certain degree of protection for the coil.

A rugged sensor system, adapted to the rough conditions and including guide elements, has been developed for use on hot-rolling mills (at temperatures up to +1,200 °C and rolling speeds up to 150 m/s). Water-cooled coils and guides for materials with diameters ranging from 5 to 60 mm are available. Special guide elements steady the wire and ensure that it is guided as centrally as possible.