eddyguard® C – Eddy Current Testers
NDT Testing for Cracks, Pores, and Grinder Burn
- Digital eddy current test instrument for one channel nondestructive testing of metal components, including mass produced parts and semi-finished products for cracks, pores and grinder burn according to the Preventive Multi-Filter Technology (PMFT).
The eddyguard digital C distinguishes itself with compact design and concentration on one channel crack and grinder burn detection with one probe and combines that with the well known ibg test reliability and ease of operation. Confi guration is effected by means of a PC or a laptop supplied by customer via the USB-port. The ergonomic interface of the PC-software facilitates intuitive and simple operation. After confi guration is fi nished the eddyguard may be disconnected from the PC/laptop. The eddyguard continues testing self-sufficiently.
Digital processing of the measuring signal with unique processors, immediately after the pre-amplifi er guarantees the greatest possible stability of test results.
The eddyguard is based on the ibg system concept proven for decades. All probes and rotating heads of the ibg system family can be used. The eddyguard is therefore recommended not only for the solution of new tasks but also as an upgrade for existing production machines to be equipped with state-of-the-art eddy current technology.
Up to now, competitive instruments require sophisticated and time-consuming manual determination and setting of suitable fi lter band, phase angle and gain. We replace that by the ibg exclusive development of Preventive
Multi-Filter Technology (PMFT) with automatic tolerance zone creation. This quantum leap in the eddy current technology, unique to ibg worldwide, establishes a new standard for quality in crack and grinder burn detection.
During material data recording (calibration) with a PC/ laptop with PMFT, surface areas of several good parts are scanned, and the good surface eddy current “noise” is recorded simultaneously in each of 30 band pass fi lters. Tolerance zones, enveloping 360 degrees, are automatically created within each fi lter band, capturing the allowable eddy current “noise” from good parts. The eddy current signals of good parts are the result of surface roughness and material properties. Thus, the thirty tolerance zones store the part specificfi ngerprint of the good parts. Additionally, edge effect, hardness profi le run out, eccentricity, etc. of the good parts are calibrated during material data recording. Pseudo rejects are, therefore, reduced considerably without losing visibility to real fl aws. Real fl aws are now automatically detected no matter their frequency content or phase angle content. Even unexpected fl aws that can be detected by eddy current are reliably detected.
This unique “good-part-only-concept” enables setup within a few minutes. Simply record an adequate number of good parts with a connected PC/laptop. One keypress switches to Preventive Multi-Filter Test and testing can start. That’s all!
A variety of crack detection probes are available with different scan width, sensitivity and design. Customized models for special applications are designed and manufactured in house.
Our compact and precision rotating heads eddyscan H and eddyscan F, operated with our eddyguard, can be the solution for cycle time optimized crack tests. Monitoring of probe cable break guarantees maximum reliability for continuous operation.
- Lift-off compensation
Eccentricity of a workpiece can be offset electronically thanks to the optional lift-off compensation. This function requires special lift-off compensation probes.
The suspend function enables areas on components such as holes not to be tested.
- Part types
Maximum 20 part types with all settings and reference data can be stored at the same time in the device memory and switched manually via the PC/laptop or via PLC for automated processes.
(with connected PC/laptop only) Test results are shown as bargraph, xy-diagram with tolerance zones, x(t) and y(t) or three-dimensional C-scan, selectable. The C-scan (or cascade diagram) provides a plannar display of a cylindrical surface to enable visualization of defect position and length.
- Probe distance
ibg probes are standard designed for a large distance between probe and test part of 0.7 mm. This considerably widens the scope for the requirements concerning parts preciseness and test mechanic.
- Frequency range
The carrier frequency is selectable within a range of 3 kHz and 10 MHz in 21 steps. The fi lter frequencies of the 30 band pass fi lters are spread in the range 6 Hz – 5 kHz.
- Data storage
Part types and device settings are stored on the PC/ laptop and can additionally be stored on an USB stick.
- Activating test
Start of test manually on the PC/laptop, via PLC or an optional start button.
- Automation without PLC
Direct control of sorting devices, paint marking systems or indicating lamps is possible with merely an external voltage source 24Vdc, providing a low cost solution for small automated systems without an additional PLC.
- Operation / Confi guration
by means of the delivered ibg operating software to be installed on a PC/laptop supplied by customer. System requirements: USB 2.0 and operating system MS Windows 7 (32 or 64 bit) or Windows XP (32 bit).
- Help function
The software for the PC/laptop has a context sensitive help function which often renders a look into the manual unnecessary.
The software for the PC/laptop may be set to German, English, French, Spanish, Italian, Czech, Portuguese, Hungary, Polish, Chinese, Japanese, Korean and Russian. Other languages as option.