®
MAGNATEST S
Transmitter Systems 3.625
®
Fig. 1 MAGNATEST S transmitter systems with various test pieces for comparing sizes
Characteristics
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Encircling test coil with round or rectangular opening cross-section.
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Cables and transducers for connection to the MAGNATEST S test system.
Standard diameter range between 5 and 200 mm (special sizes up to 500 mm).
Transmitter identification for identifying the transmitter type by the MAGNATEST S test system.
Mechanism for accomodating test coils and for continuous transport of test pieces with subsequent
sorting.
® Registered trade-mark
Application
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Transmitters for the LF range (2 Hz to 1000 Hz)
for testing predominantly ferromagnetic and
austenitic components for volume characteristics.
Transmitter for the HF range ( 1 kHz to 128
kHz) particularly for testing surface characteristics on components made of non-ferrous metals.
Rectangular coils for integral testing of flat
parts(e.g. large gearwheels or brake disks).
The diameter grading of the circular coils is
matched to the recommended space factor of
approximately 0.4 to 0.9. In the case of cylindrical test pieces, this is the ratio between coil diameter and test piece diameter.
Special-purpose transmitters with narrower diameter grading (5 mm) are available for tests
with more stringent requirements as regards
test sensitivity.
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Coils with reduced effective width are available
for local cases depth and surface hardness
measurements on long rotationally-symetrical
test pieces (drive shafts, wheel hubs etc.).
These are short coils with active field limitation
by compensation windings.
Surface probes for both frequency ranges are
available for local measurements on flat or very
large test pieces.
Test pieces must be inserted into the coil opening. Testing can be carried out statically with
the test piece stationary or dynamically with material throughput. The permitted throughput
speed is dependent upon the instrument parameters used (essentially frequency of the excitation field). In extreme cases, it may reach the
speed of free fall.
A corresponding mechanical handling transport
system with conveyor belts and sorting gates is
available for automatic test operation.
Construction
MAGNATEST coils
An electromagnetic field which induces, in the measuring winding, a voltage whose amplitude and
phase are influenced by the metallic test piece in
the field is generated in primary winding by AC voltage excitation.
The encircling coils all have a transformer winding
structure with glass fiber-reinforced plastic protecti
ve tube, sealed plastic and plug-in cable connection. There are 2 M6 securing threads on each of
the two opposite sides.
All coils are prepared for installation in the conveying system. Certain coils for special installation positions require an additional coil holder (see also
Overview, Table 1).
MAGNATEST standard probes
Pencil probe LF 3.625.01-4601
- Eddy current test probe with punctiform contact surface
- Hemispherical contact aid
- Frequency range 2 Hz to 1 kHz
- Slighter influence of surface roughness and
lift- off effect as with yoke probes LF-G and
LF-H
- Prefered evaluation of the fundamental wave,
low generation of harmonics
- Transformer coil system
- Transmitter identification in the connection
cable
2
Pencil probe HF 3.625.01-4402
- Eddy current test probe with punctiform contact surface
- Hemispherical contact aid
- Frequency range 2 to 128 kHz
- Preferred evaluation of the fundamental wave
- Particularly for local measurements
- Transformer coil system
- Transmitter identification in the connection
cable
Flat probe LF 3.625.01-4201 (Ø 35)
Flat probe LF-H3 3.625.01-4111 (Ø 58)
- Eddy current test probe with transformer lamination core and flat contact surface
- Frequency range 2 Hz to 1 kHz
- Particularly for flat materials e.g. sheet metal
- Transformer coil system
- Transmitter identification in the connection
cable
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Table 1 Mounting method
5 - 100
> 100 - 200
20 -50 (100)
100
200
Circular coil
MAGNATEST S
Circular coil
MAGNATEST S
Circular coil
MAGNATEST I
Circular coil
MAGNATEST I
Circular coil
MAGNATEST I
Rectangular coil
MAGNATEST I
100 x 70
200 x 100
100 x 75
200 x 100
10 - 50
Circular coil
short
MAGNATEST S
Rectangular coil
MAGNATEST S
Nominal Value
Coil Type
250 x 250 x 90
250 x 250 x 90
250 x 250 x 87
150 x 150 x 90
150 x 150 x 90
250 x 250 x 90
150 x 150 x 90
100 x 100 x 40
Overall
Dimension
200 x 60 (M6)
200 x 60 (M6)
200 x 60 (M6)
110 x 70 (M6)
110 x 70 (M6)
200 x 60 (M6)
110 x 70 (M6)
60 x 28 (M4)
Drilling pattern
X
3.610-803-1007
.
3.610-803-2010
X
X
3.610-721-200
-
3.625.01-3706
.
3.625.01-3723
3.610-702-200
3.610-702-100
-
3.610-721- 20
.
3.610-721-100
3.610-701-020
.
3.610-701-050
-
X
3.625.01-3300
.
3.625.01-3319
3.625.01-3100
.
3.625.01-3119
-
X
X
X
X
X
X
X
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Coil Holder
mounted at top
Mounting Method
Plate for
Coil Adjustment
3.625.01-3121
.
3.625.01-3123
3.625.01-3600
.
3.625.01-3603
3.625.01-3400
.
3.625.01-3403
Part No.
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-
-
-
-
-
-
X
Coil Holder
mounted
at bottom
a
b
Mounting Position
100
150
250
150
250
250
250
150
250
150
150
250
250
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250
3.625
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MAGNATEST probe kits
Probe kits permit the construction of probes by
the customer
- for LF pencil probe with frequency range
2 Hz to 1 kHz 3.625.01-4801
- for HF pencil probe with frequency range
1 to 128 kHz 3.625.01-4902
MAGNATEST special or special-purpose probes
Yoke probe LF-G 3.625.01-4001
- Eddy current test probe with two transformer lamination cores and circle-segment contact aid
- Frequency range 2 Hz to 1 kHz
- Preferred evaluation of the fundamental
wave, evaluation of the harmonics is possible
- Slighter influence of the edge effect as with
pencil probe LF
- Particularly for local measurements, measurements on bright surfaces
- Transformer coil system
- Transmitter identification in the connection cable
Coil adapter difference mode 3.625.01-9701
- for the connection of a second coil to the test
channel coil connection socket
- for the possibility of difference mode to increase the test sensitivity e.g. with austenitic
test material
- standard coil cable addittionally necessary for
connection with test channel socket X4
Yoke probe LF-H 3.625.01-4101
- Eddy-current test probe with u-shaped transformer lamination core
- Circle-segment contact aid
- Frequency range 2 Hz to 1 kHz
- Evaluation of the fundamental wave and
generation of harmonics
- Slighter edge effect as with pencil probe LF
and yoke probe LF-G
- Preferred for local measurements and measurements on bright surfaces
- Transformer coil system
- Transmitter identification in the connection cable
Flat probe LF-H3 3.625.01-4111 (Ø 58)
Flat probe LF 3.625.01-4201
- Eddy current test probe with transformer lamination core and flat contact surface
- Frequency range 2 Hz to 1 kHz
- Particularly for flat materials e.g. sheet metal
- Transformer coil system
- Transmitter identification in the connection
cable
4
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*1) 230 V, 50 Hz
*2) Other cable lengths upon request
Fig. 2 Cable overview 1
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Conveying sytem 8.280
The conveying system performs the task of uniform, smooth transportation of the test pieces
through the MAGNATEST coil. For this purpose, it
has a belt drive with variable-speed gearing which
is designed for conveying speeds of 0.11 to
1.0 m/s.
All rectangular coils with clear cross-section of
100x200 and 100x75 mm (upto 300 x 150) can be
mounted on the coil holder. See also table 1 installation of the MAGNATEST coils in the conveying
system. The coil adjustment device permits the
height of the coil to be adjusted with respect to the
conveyor belt.
The conveyor belt used has a widths of 90 mm.
Fig. 3 MAGNATEST S, conveying system with test coil and sorting gate
Sorting gate
The sorting gate is mounted on the conveyor system. It sorts the tested and classified pieces into
the related sorting group.
Pieces up to
• 50 mm width
• 120 mm length
• 5 kg weight
can be sorted into 3 groups
Throughput up to 1 piece/s
Fig. 4 Sorting gate
1) 230 V, 50 Hz
2) Other cable lengths upon request
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Test piece sensor
The test piece sensor consists of a light barrier holder with reflection-type light barrier, a terminal box
and a connection cable 20 m for the connection to
the I/O-module.
It is used in the diameter range of 5 to 100 mm.
Its application is necessary if:
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The test position of the test piece has to be
signalled in the stop and go mode
(The MAGNATEST automat ically tests by
internal trigger mode, if the test pieces are
continuous transported. In theese cases no
test piece sensor is necessary piece by piece testing).
No constant distances between the test pieces can be guaranteed and the test piece
sensor signal should be used for sorting information.
The leading and trailing edges of the test
pieces should be identified in the piece by
piece mode using the functional module
HZP for semi-finished product testing.
Transmitter multiplexer
It allows:
• the simultaneous connection of up to 4 coils
and probes at one MAGNATEST S test
channel
• the automatic switchover via test data setting(parameters of tester/transmitter input).
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It is mounted in a separate housing
(220x200x110mm HxWxD)
according to IP 65 and is suitable for wall mounting.
An additional coil cable is required between transmitter multiplexer and MAGNATEST S test channel.
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Technical data
MAGNATEST coils (standard size)
Temperature resistance of the encircling coils
up to 85°C on the coil tube, inside
Clear opening width of the test coil LF, circular
frequency range 2 Hz to 1 kHz
- Overall dimensions 150x150x90 mm
- Overall dimensions 250x250x90 mm
10,20,35,50,75,100 mm Ø
150,200 mm Ø
Clear cross-section of the, test coil LF, rectangular
frequency range 2 Hz to 1 kHz
- Overall dimensions 250x250x90 mm
Overall dimensions 360x250x90 mm
100x75 mm WxH
150x25 mm WxH
200x100 mm WxH
300x150 mm WxH
Clear opening width of the test coil HF, short,
circular,frequency range 1 to 128 kHz
- Overall dimensions 100x100x40 mm
10,20,35,50 mmØ
Special or special-purpose dimensions
see ordering instructions
MAGNATEST probes
Pencil probe NF
Pencil probe HF
Flat probe NF
Flat probe HF
Probe kit for pencil probe NF
Probe kit for pencil probe HF
Yoke probe NF-G
Yoke probe NF-H
Flat probe LF-H3
35 mm Ø, length 101 mm
15 mm Ø, length 82.5 mm
35 mm Ø, length 83 mm
15 mm Ø, length 70 mm
30 mm Ø, length 80 mm
10 mm Ø, length 38.5 mm
35 mm Ø, length 88 mm
35 mm Ø, length 88 mm
58 mm Ø, length 83 mm
Test piece sensor
Operating range
Connection cable to the I/O-module
5 to 100 mm material diameter
screened Ölflex cable 4x0.5 mm2
for permanent connection 20 m in length
Transmitter multiplexer
Dimensions
Operating range
Order no. 137 992 5
220x200x110 mm (HxWxD)
simultaneous connection of up to 4 coils and probes at one MAGNATEST S test channel
IP 65
Author Bez/pt