=New equipment maintenance testing on aircraft. Other areas of application include the defect testing of metal components, after production for example, or the rechecking of f indings determined with other testing processes.

The instrument is the successor to the we l l -known Defectometer eddy current range.

In addit ion to the advantages of high frequency eddy current testing, in particular the high probabil i ty of fault detection and the ease of operation, the instrument, by using the latest microprocessor technology, offers the fo l lowing features:

• The combinat ion of all the signal, result and parameter displays on one large, backlit LC display, enabling the user to see everything at a glance;

• Various, optional types of display, ranging from the simulation of a galvanometer and bar graph to a two- dimensional display of signal versus time;

• Memory funct ion for recorded signals which means that no signal is lost even if the test engineer has to concentrate ful ly on guiding the probe during scanning of the location to be tested;

• A facil ity for documenting the results via a printer or PC to meet the ever greater demands for a documented testing process, eg ISO 9000;

• The high degree of protection against dirt, dust and water which makes operation in harsh condit ions possible.

Institut Dr F6rster, PriJfger~tebau GmbH & Co. KG, Postfach 1564, D-72705 Reutfingen, Germany

Expanded thermal imaging range In response to market demand for a more cost-effective range

The Thermovision 400 range of thermal imaging systems from Agema includes four new products

of thermal imaging systems suited to a wider variety of applications, Agema Infrared Systems has relaunched its Thermovision 400 series to include four new products.

The entry level 4501B is a 256 grey level, video output imager which includes a 12 ° or 20 ° lens and the facility to add new lenses. It is designed for customers requiring the features of a thermal imaging camera, such as rapid detection of hot spots including full measurement analysis, but do not require additional software functions, colour images etc.

For applications where colour images are required, the 4501 has both i ronbow and rainbow colour scales, and includes additional software funct ions such as image profile and magnification.

The provision of a bui l t - in f loppy disc drive in the 470B means that customers have the benefits of the basic model, but

can also record up to 70 images digitally.

At the top of the range, the new 470 model offers the features of the previous 470, such as colour palettes, a range of software functions, and digital image storage, but includes a 12 ° or 20 ° lens at an overall reduced price.

Agema Infrared Systems Ltd., Arden House, West Street, Leighton Buzzard, Beds. LU7 7DD, UK

Stress-strain microprobe system Determination of the integrity of a metallic structure is required either to ensure that failure wil l not occur during the service life of the components (particularly fo l lowing weld repair) or to evaluate the lifetime extension of the structure. A portable/in-situ stress-strain microprobe

326 NDT&E International Volume 26 Number 6 1993