Rohmann Newsletter 13 Eddy-Current-Test Instruments and Test ...

Wirbelstrom-Prüfgeräte und -Systeme • Eddy Current Instruments and Systems
CONTROL 2012
CONTROL is being held again in Stuttgart from May 8th to the 11th. This trade fair has been
around for 26 years already and we have been presenting our test devices there since that time.
The trade fair began in Sindelfingen with 97 presenters that year when the subject of quality
assurance was not yet really an issue. That has permanently changed. Today we are one of over
800 exhibitors at the trade fair and over 24,000 trade visitors from 88 countries prove the high
value of quality assurance and this event.
The rapid growth of our business enables us to present a small highlight at CONTROL nearly
every year. This year we presented the compact EC15 rotor. Designed for non-contact crack
detection on wires, this rotor‘s small dimensions and low weight allow it to be used in the
interesting field of handling machines, e.g. for the testing of cylindrical parts (see the reports on
pages 5 and 6).
There was a great amount of interest so we were able to take some of the inquiries regarding
this topic back home with us.
Just like every year, this year many visitors once again took advantage of the opportunity to discuss
their testing tasks with us, presented us with their smaller and larger task assignments, and
were very often able to leave the booth with a verifiable response regarding their feasibility.
Once or twice we heard visitors say, „This already made the visit to the trade fair worthwhile for
us!“ That means that this year‘s appearance at CONTROL can once again be considered a success.
Alexander v. Hornhardt, Rohmann GmbH
Rohmann GmbH
Rohmann Newsletter 13
CONTENT
Eddy-Current-Test Instruments and Test Systems
Page 1 - CONTROL 2012
Page 2 -4 - Separators
Page 5 - Rotor EC 15
Page 6 - Application
Page 7
- Agents Meeting 2102
Page 8
- TUBE & WIRE 2012
Page 9
- Rohman UK in Singapore
Page 10
- ET-Trainings/Exhibitions
Page 11
- Multiplex-technology
Page 12 - Contacts
ISSUE 13, Juni 2012

Wirbelstrom-Prüfgeräte und -Systeme • Eddy Current Instruments and Systems
Products
Length of pieces (mm)
TwinSort twin sorting separator
Switch size
Speed up 0.8 sec/piece up 1.2 sec/piece
Separation control
Maximum size of cylindrical test pieces
The separator can be connected directly to the:
Diameter of pieces (mm)
ELOTEST IS500 ELOTEST PL500
Rohmann GmbH
The sorting separators of our partner N-DECT GmbH are designed with integrated control and monitoring systems for
long-term operation as part of a production line.
Power is supply by means of an integrated 24-volt DC adapter in the ELOTEST PL500 or ELOTEST IS500.
Separation control is also integrated.
The positions of the stopper and separator are monitored by means of a proximity switch.
The sorting coil is installed directly on top of the sorting mechanism.
The separator construction enables parts subject to wear and tear to be easily replaced.
The separator weighs 2 kg.
2

Wirbelstrom-Prüfgeräte und -Systeme • Eddy Current Instruments and Systems
Products
Length of pieces (mm)
NovoSort 9-part sorting separator
Speed
Separation control
Rohmann GmbH
The sorting separators of our partner N-DECT GmbH are designed with integrated control and monitoring systems for
long-term operation as part of a production line.
Power is supply by means of an integrated 24-volt DC adapter in the ELOTEST PL500 or ELOTEST IS500.
Separation control is also integrated.
The positions of the stopper and separator are monitored by means of a proximity switch.
The sorting coil is installed directly on top of the sorting mechanism.
The separator weighs 2 kg.
The separator can be connected directly to the:
Individual customization and special designs possible!
Maximum size of cylindrical test pieces
Diameter of pieces (mm)
up 0.9 sec/piece
ELOTEST IS500 ELOTEST PL500
3

Wirbelstrom-Prüfgeräte und -Systeme • Eddy Current Instruments and Systems
Products
Schematic diagram TWINSORT 15
Schematic diagram NovoSort 12
Sorting separators
Rohmann GmbH
4

Wirbelstrom-Prüfgeräte und -Systeme • Eddy Current Instruments and Systems
Products
Compact rotor EC15/1-1
Compact rotor EC15
Rohmann GmbH
Compact high-performance rotor for the non-contact testing of round materials, such as wires, rods and
pipes with dimensions ranging from 1.5 – 15 mm, are able to pass through it.
Constructed in a high-strength anodized aluminum housing, this rotor serves to record longitudinal and
transverse defects with longitudinal components starting from a defect depth of 20 µ.
Its compact construction allows the rotor to be very easily integrated into existing test tracks or transport
lines. The median throughput height is 35 mm.
The fixed RD rotor or adjustable RDE rotor test nozzles are available for testing the entire dimensional range
from 1.5 – 15 mm.
The width of the test track will be defined by sensors adapted according to the task definition.
The rotor with dirt protection (labyrinth seal), precision bearings and non-contact, maintenance-free test
signal transmitters is operated at 3,000 rpm. It is driven by a 24-volt motor.
Technical Data:
Rotor speed: 3,000 rpm (optionally 6,000 rpm)
Testing diameter: 1.5 mm – 15 mm depending on model
Drive: 24V/9 A
Housing material: anodized high-strength aluminum
optional:
Base plate for installation; protection nozzle with retainers; customerspecific
customizations
Guiding nozzles: Peek, high-strength and temperature-resistant,
centering and ball centering
installation and disassembly do not require tools
Probes: depending upon the testing task
Versions: 1.) Test probe 1 – 1 channel with A compensation
2.) Test probes 1 and 2 – 2 channels without A compensation
Dimensions : L= 120 mm, B= 70 mm, H= 138 mm
5

Wirbelstrom-Prüfgeräte und -Systeme • Eddy Current Instruments and Systems
Application -
Rohmann GmbH
System for eddy current crack detection on cylindrical parts
using ELOTEST PL500
Throughput rate:
10 parts/second, maximum conveyor
speed 100 mm/s, optionally faster.
Spectrum of parts:
Standard 1.5 mm < Ø < 5 mm, 5 < l < 30 mm,
optionally longer and up to Ø 10 mm
Typical defect specification:
Longitudinal cracks 0.05 mm deep x 0.05 mm wide x
3.0 mm long
The parts are fed in the line, e.g. using a vibratory feeder.
The line of parts is clamped between drive wheels
and brake wheels and thereby precisely and evenly fed
through the rotating head.
The overlaying of the rotational movement of the
probes and the progressive advance of the line of
parts monitored by encoders create a screw-shaped
test track on the test pieces. This allows their lateral
surfaces to be scanned for surface defects without gaps
or contact.After the brake rolls, the test pieces separate
from the line and fall individually into the subsequent
sorting switch which sorts to BAD (defective) in its
home position and is monitored in both its GOOD
(non-defective) as well as BAD position.The switch will
only be actively switched to the GOOD position if there
is a positive evaluation of all of the monitored parameters
and the test result is OK.
The good parts are counted and fed into a monitored
container as bulk goods. When 90% of the adjustable
target number of pieces is reached, the operator receives
an advance warning on the panel and signal light.
The systems stops when the target number of pieces
is reached.The system can also be equipped with an
optional container changer.Even at full testing speed,
defective (BAD) parts will be fed individually into a
monitored container as bulk goods.The number of
defective parts is recorded and an advance warning is
given when 90% of the preset target number of pieces
is reached in this case as well.It is possible to switch the
containers without stopping the system.The system will
Eddy Current System for sorting
stop if one or more of the containers are missing.
It is typically possible to modify the system to other
diameters in less than 15 minutes. The tools and interchangeable
parts are clearly organized and stored
in the integrated drawer cabinet.All of the system‘s
movements and functions are monitored and can be
controlled using the color panel. Part types and their
specific parameters can be saved in the control system
and selected on the panel for fast part-type adjustment.
Error messages are displayed on the panel in clear text
along with measures for resolving them.
The system is designed for unmanned operation. The
constructive measures and the careful selection of the
components used minimized the amount of servicing
required while simultaneously providing the maximum
service life.
Jens Geiger, n-dect
6

Wirbelstrom-Prüfgeräte und -Systeme • Eddy Current Instruments and Systems
Events
Gruppenfoto von der Vertretertagung 2012
2012 Representatives‘ Conference
Representatives from China to Mexico accepted our
invitation to the 2012 International Representatives‘
Conference (Vertretertagung 2012) held in Frankenthal
from February 28th to March 1st, 2012.
The extensive program enabled representatives to
learn about new innovations. Devices, sensors, software
developments and their associated diverse testing
options were presented in detail and discussed. Many
representatives reported on their testing tasks thereby
enabling the other representatives to gain a comprehensive
glimpse into their work and provided ideas on
how their own applications can be solved.
Practical experience could be gathered on the 3rd day.
Rohmann GmbH
The device training enabled the practical implementation
of the large amount of information collected during
the first two days. Many unresolved questions were
answered in this manner. The comprehensive presentation
of the test devices, the detailed explanation of the
different setting options, and the immediate practical
application formed the conclusion of the representatives‘
conference.
The positive feedback from the participants and the numerous
inquiries regarding a continuation of the event
speak for themselves.
We are pleased to have hosted a successful representatives‘
meeting and would like to thank all of the participants
for their involvement.
Annett Wieduwilt, Rohmann GmbH
7

Wirbelstrom-Prüfgeräte und -Systeme • Eddy Current Instruments and Systems
Events
Booth of the TUBE & WIRE 2012
TUBE & WIRE
Rohmann GmbH
The TUBE & WIRE trade fairs will be held in Düsseldorf from March 26th to the 30th, 2012. Over 1,300 exhibitors presented their
products at the WIRE trade fair alone. This year we will be presenting our products at the WIRE trade fair in Hall 16, putting us in
the direct vicinity of the FASTENER and SPRING product groups within the WIRE trade fair. This is just the right place for the first
presentation of the new EC15 rotor and the new sorting system. The TwinSort and NovoSort sorting separators (see pages 2 - 4 of
the report) received a great deal of attention. Our presentation of NovoSort, a 9-part separator, in action was just as successful as
our presentation of the EC15 and EC30 rotor systems in combination with encircling coils. The test devices we were able to present
included our ELOTEST IS500 and ELOTEST PL500 inline device family.
With a few interruptions we have been an exhibitor at the TUBE & WIRE trade fairs again and again. This year was the best so far,
however. A great amount of interest could be felt from visitors as well as other exhibitors. Many of them are already customers of
ours and more than a few people became interested potential customers at our booth.
All in all we can only say that WIRE 2012 was once again a very successful trade fair!
Alexander v. Hornhardt, Rohmann GmbH
8

Wirbelstrom-Prüfgeräte und -Systeme • Eddy Current Instruments and Systems
Events
Simon Barnes in action
During a sales visit to SE Asia region, Simon Barnes of
Rohmann UK was invited to make presentation to the
NDT Society of Singapore on 11th May 2012. The
chosen topic was ‘Robotic EC Inspection System for
Commercial and Military Engine Components’.
The opportunity was taken to give an overview of
Rohmann GmbH to the attendees. This covered the
founding of the company in Beindersheim through to
the construction of the company buildings including the
newest building at Carl-Benz-Str in Frankenthal. The
key members of the Rohmann family were ‘introduced’
and the emphasis that that Rohmann remains a family
business and will continue to be so.
The product range from probes and sensors through to
in-line systems were also presented to the broad NDT
industry audience.
The main presentation covered the development of the
EloScan system; the important features and components
that make up this fully integrated inspection system. An
overview of the newest features of xml sequencing and
CAD/CAM data transfer and simulation was described.
A short movie of the EloScan system in operation was
then given and narrated by Simon Barnes. At the
Singapore NDT Society
Simon Barnes got the certificate
Rohmann GmbH
conclusion of the movie, a question and answer session
opened up some interesting points but not only about
the EloScan.
At the end of the presentation, Simon Barnes was
presented with a Certificate by Dr B S Wong, as an
expression of the appreciation of the Singapore NDT
Society.
Simon Barnes, Rohmann UK
9

Wirbelstrom-Prüfgeräte und -Systeme • Eddy Current Instruments and Systems
EDDY CURRENT LEVEL 1 & 2 TRAINING IN FRANKENTHAL
REGISTER NOW AT: WWW.VECTOR-TUB.DE
Where safety is important, questions are asked of experts,
experts who guarantee stability, durability loading capacity
and therefore safety.
Since 1993 SECTOR Cert GmbH has qualified and certified
non-destructive testing experts. SECTOR Cert offers industries
highly respected certification through the use of a Europe-wide
network of training and testing centers, continuous checks
on the network partners as well as the special practical-oriented
training and testing. So; only those who are certified are
qualified!
In co-operation with Rohmann GmbH, VECTOR and SECTOR
Cert GmbH are holding eddy current level 1 and 2 training
and exams 1+2 in Frankenthal.
Course content:
• The difficult part of level 1 training is the basics of behavior
of magnetic induction, eddy current technology and
impedance plane display.
• Intensive familiarisation with generic and special instruments.
• An overview of industrial applications including pressure
tank manufacture, tube production and aviation.
• For participants from all industries material sorting is
covered.
CONTROL 2012, Stuttgart, GERMANY
8. - 11. March 2012
INNOTRANS, Berlin, GERMANY
18. - 21. September 2012
HK Wiesbaden, GERMANY
10. - 12. October 2012
Testxpo, ZWICK, Ulm, GERMANY
15. - 18. October 2012
ASNT Fall Conference, Orlando, FL, USA
29. Oktober - 2. November 2012
Metalex, Bangkok, Thailand
21. - 24. November 2012
Exhibition Dates 2012
Training Dates 2012:
Kurs E1-110: 23.01. - 01.02.2012
Kurs E3-262: 21.05. - 26.05.2012
Kurs E1-112: 11.06. - 20.06.2012
Kurs E2- 69: 08.10. - 17.10.2012
Rohmann GmbH
Please check our home page for the dates of the practical training and exams
Prices:
Level 1: (5 Day course) 1.250, – EUR
Level 2 (5 Day Course) 1.250, – EUR
Practical training with exam preparation (2 Days) 660,–EUR
Exams Level 1 or 2 + Certificate + Licence (1 Day) 710, – EUR
Register at:
VECTOR GmbH
Frau Britta Rademacher
Am Walzwerk 17
45527 Hattingen
Tel: 02324.919820
Fax: 02324.9198209
Mail: info@vector-tub.com
www.vector-tub.com
Rohmann GmbH booth at CONTROL 2012 in Stuttgart
10

Wirbelstrom-Prüfgeräte und -Systeme • Eddy Current Instruments and Systems
Software
Rohmann GmbH
Cutting costs through the most advanced multiplex technology
Have you ever watched a round of simultaneous chess? Then
you have experienced a visible example of multiplex technology.
One individual player plays against a series of opponents
at the same time. The player does this by switching to the next
opponent after each move. Naturally the chess master must
be an excellent player in order to be able to not only quickly
decide the next move but also to keep all of the simultaneous
games in mind and to know what their current status is.
That is precisely how multiplexing works in the modern eddy
current test devices in the V5 series such as the ELOTEST
PL500 and ELOTEST IS500. The devices can switch from one
set of parameters to the next very quickly (in 4 microseconds)
and can remember up to 32 (ELOTEST PL500) or 8 (ELOTEST
IS500) sets of parameters at the same time. Together with a
probe multiplexer, they can also switch between the test probe
or coil. The result is that they can operate multiple probes
with just one test channel in order to really save money. An
excellent testing speed can still be achieved in many testing
situations despite this fact because the digital test devices of
this family are based on the most advanced FPGA technology
and can therefore perform multiplex operations as quickly as
physically possible.
Optimally adapted to the test problem, the devices can be
configured in various multiplex operation types. We would like
to take this opportunity to briefly present the most important
ones to you:
Parameter multiplex
Normally the test devices in the V5 series switch between
entire sets of parameters in the multiplex. A test piece can
therefore be inspected using multiple test frequencies in the
frequency multiplex, for example. This technology is standard
for use with screening inspection (material mix, joints, etc.)
with up to 8 frequencies. The devices can also be equipped
with a sorting channel module for screening inspection that
provides additional important automated functions in order to
be able to set up such an inspection quickly and securely. We
have given this type of operation, commonly known as frequency
multiplex, the name „parameter multiplex“ because the
fast FPGA technology allows it to switch not only between test
frequencies but nearly the entire set of parameters. Testing can
also be carried out using different filter settings, for example.
Probe multiplex
In addition to the parameter multiplex, switching between the
test probe or coil is also possible with the aid of a probe multiplexer.
The probe multiplexer can even be already installed
in the channel module for up to two probes. Those who want
to multiplex more than two probes will require additional
multiplexer hardware that is available in different models. The
parameter multiplex is always running along with it so that
each probe receives its own complete set of parameters. The
probes can therefore be operated using different frequencies,
filter settings, or amplifications without a problem. Any phase
or sensitivity differences between the probes that may exist
can also be compensated in this manner.
Both the parameter multiplex as well as the probe multiplex
can be used in two different types of operation:
Fast multiplex operation
This type of operation really goes at it like a round of simultaneous
chess. After each data point is recorded, the operation
switches to the next set of parameters and the next probe or
coil. This enables an optimal testing speed to be achieved
and all of the signals are recorded „practically simultaneously“.
The recording rate of the channel per multiplex channel is
naturally reduced by this so that testing cannot be carried out
at the full testing speed of the channel. This type of operation
is suited for tasks where a high amount of track coverage is
required but the testing speed is not too high. The speed at
which testing can be carried out primarily depends upon the
number of probes or sets of parameters and the test frequencies
being used.
Slow multiplex operation
Now imagine if the chess grandmaster would not switch to
the next chessboard after each move but rather would spend
a certain number of moves or a specified amount of time
against each opponent. That is how the „slow multiplex“ type
of operation functions. The multiplex rate decreases, but the
full recording rate and bandwidth is available while the channel
is active. This type of operation is used if multiple quickly
rotating pieces are to be tested in rapid succession in multiple
stations, for example.
All of these types of operation can be combined in numerous
ways. One test channel can test the lateral surfaces of a
tool using multiple probes in fast multiplex while a second
channel tests one side then the other side in long multiplex,
for example. This enables optimal cycle times to be achieved
at reasonable costs.
Ask our experts to advise you on whether the innovative
multiplex technology can be used for your testing problem
as well. Then you will quickly be able to call „checkmate“ on
your testing costs.
Dr. Aschwin Gopalan, Rohmann GmbH
11

Wirbelstrom-Prüfgeräte und -Systeme • Eddy Current Instruments and Systems
Contact Information
More addresses you will find on our homepage: www.rohmann.de
GERMANY - Head office Agency in North-East Germany
Rohmann GmbH
Carl-Benz-Str. 23
67227 Frankenthal
Germany
Tel: +49 (0) 6233-3789-0
Fax: + 49 (0) 6233-3789-77
E-Mail: info@rohmann.de
Internet: www.rohmann.de
Gollub Werkstoffprüfung GmbH & Co. KG
Viktor-Scheffel-Str. 8
74177 Bad Friedrichshall
Germany
Tel: +49 (0) 7136 2 21 95
Fax: +49 (0) 7136 2 21 97
E-Mail: gollub-zfp@t-online.de
Internet:
www.gollub-werkstoffpruefung.de
IC Escoffier
Parc d‘activités
de la Route des Lacs
27106 Val de Reuil Cedex
France
Tel: +33 (2) 32 63 34 97
Fax: +33 (2) 32 59 20 66
E-Mail: jeanmichel.spinelli@areva.com
Internet: www.intercontrole.com
Jadeshine
TYG Center B-1102
Dong San Huan North Road Bing 2
Chaoyang District
100027 Beijing
P.R. China
Tel: +86 (10) 84 47 18 76
Fax: +86 (10) 84 47 17 67
E-Mail: jadeshine@263.net.cn
Internet: www.jadeshine.com
CNS UG (haftungsbeschränkt)
Gartenstr. 28
14548 Schwielowsee
Germany
Tel.: +49 (0) 33209 72533
Fax: +49 (0) 33209 20924
Mobil:+49 (0) 170 4859052
e-mail: info@cns-ndt.de
Agency in South Germany Sales office in North-West Germany
Agency in FRANCE:
Agency in CHINA:
Agency in Great Britian:
Rohmann (UK) Ltd
Unit 6 Glenmore Business Park
Bumpers Farm Industrial Estate
Chippenham Wiltshire
SN14 6BB
United Kingdom
Tel: +44 1249 65 93 46
Fax: +44 1249 44 30 97
E-Mail: sales@rohmann.co.uk
Internet: www.rohmann.co.uk
Tecnitest
Calle Ciudad de Frias 1,
Nave 4
28021 Madrid
Spanien
Tel: +34 (91) 7 96 14 18
Fax: +34 (91) 7 95 47 59
E-Mail: rservent@tecnitest.com
Internet: www.tecnitest.com
Rohmann GmbH - Herr Schwabe
Bohnenhof 24
D- 53773 Hennef
Germany
Tel.: +49 (0) 2248-909 88 55
Fax: +49 (0) 2248-909 88 56
Mobil: +49 (0) 172-624 87 42
E-Mail: info@rohmann.de
Internet: www.rohmann.de
Agency in ITALY:
Ecomag srl.
Via Pisa 250
20099 Sesto San Giovanni
Italy
Tel: +39 (02) 24 41 67 75
Fax: +39 (02) 24 30 82 60
E-Mail: baroni@ecomagsrl.it
Internet: www.ecomagsrl.it
Agency in South KOREA:
VASTEK
201-506, Bucheon Technopark
192, Yakdae-dong
Wonmi-gu; Bucheon-si
420-733 GYEONGGI-DO
South Korea
Tel: +82 32 3 28 90 20
Fax: +82 32 3 28 76 64
E-Mail: hajc7@yahoo.co.kr
Internet: www.vastek.co.kr
Agency in the USA:
Rohmann LP
111 Corporate Drive, Suite D
Spartanburg, SC 29303
USA
Tel: +1 - 864 - 208 - 0480
Fax: +1 - 864 - 208 - 0484
E-Mail: info@rohmann.com
Internet: www.rohmann.com
Agency in SPAIN: Agency in SWITZERLAND:
AMSLER Prüfsysteme (Schweiz) AG
Herrgass 21
8413 Neftenbach
Schweiz
Tel: +41 (52) 3 15 40 81
Fax: +41 (52) 3 15 33 95
E-Mail: aps.huggler@bluewin.ch
Internet: www.amsler-pruefsysteme.ch
Alle technischen Daten waren zum Zeitpunkt der Veröffentlichung korrekt. Rohmann GmbH behält sich Änderungen der Spezifikationen vor.
Rohmann GmbH