Application Report - Rohmann GmbH

Application Report
Inspection on Components for Wind Energy Systems
Complete assembled parts
The parts are from non-conductive material. There are rings made from aluminium or
copper inside the parts. The distance between these rings should be about 14mm. It
should be checked whether the distance is not less than 8 mm. ABB in Spain use the
ELOTEST M2V3 with a PKA 48-23 probe for this application.
Also the new ELOTEST M3 and the ELOTEST B310 can be used for this application.
Sample part – complete view with Elotest M3:
Sample part – defect view:
Rohmann GmbH • Carl-Benz-Str. 23 • 67227 Frankenthal • GERMANY • Tel. +49(0)62 33 - 3789-0 • Fax +49(0)62 33 - 3789-77 • www.rohmann.de • E-Mail: info@rohmann.de
Distance too small
Rohmann GmbH

Application Report
Sample part with probe PKA 48-23: Drawing:
The
probe
is
moved
along
the
surface
Screendump with the eddy current signal from
the sample part:
Distance Distance
too
 too small
small
Distance Distance
too
 too small
small
Test systems and accessories:
Rohmann GmbH • Carl-Benz-Str. 23 • 67227 Frankenthal • GERMANY • Tel. +49(0)62 33 - 3789-0 • Fax +49(0)62 33 - 3789-77 • www.rohmann.de • E-Mail: info@rohmann.de
Rohmann GmbH
ELOTEST M3
The new ELOTEST M3 is unbeatable anytime a high resolution is required, when
diffificult jobs are to be done or when both hands are required and the instrument
has to be put down or when several inspectors have to look at the display at the
same time.
Yet the typical performance data are quite impressive:
• Full frequency range from 10Hz to 12MHz
• All filter functions (low pass, high pass, band pass)
(optimized special filters for rotor operation)
• Wide amplification range
• Dual-frequency operation; may be independently
adjusted (1 probe)
• Pictograph-guided operation via 10 keys (dual
compensation)
• All commercially available probes may be connected
Probe PKA 48-23
Frequency: 80 Hz - 8 kHz
Order number: ASP07330