integrated in an already
installed inspection line.
The bars are fed one by one on linear
tracks into the ultrasonic test chamber
with a guiding and transport device.
A lifting/shifting table is required for
installation of the test chamber within
the guiding and transport line. The ultra-
sonic coupling is effected by a rotating
water jacket, generated by the tangen-
tially running coupling water. The ow is
easily controlled with manual valves.
Guiding bushes at the inlet and outlet
sides keep the water jacket within the
test chamber. Rubber sealing prevents
water leakage during the test and re-
moves the water from the test objects
surface after the test.
Depending on the application, up to 5
probes are arranged in the test chamber.
Type, amount and position of the probes
around the bars can be adjusted to re-
quirements.
For testing square and hexagonal mate-
rial the probes are mounted on a probe
holder and the position to the surface
of the test specimen can be easily ad-
justed.
ROWA 90
test electronics with
USD 15 GE Inspection Technologies
Ultrasonics
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GEIT-60014GB (11/04)
Technical Data
Data ot the test objects
ROWA 90
Round Material
14 mm 35 mm
Square Material
14 mm 25 mm
Hexagonal Materal 14 mm 33 mm
ROWA 120
Round Material
16 mm 55 mm
Square Material
16 mm 40 mm
Hexagonal Material 16 mm 47 mm
ROWA 160
Round Material
50 mm 100 mm
Square Material
on request
Hexagonal Material on request
Data of the testing machines
Test speed
Typically 20 to 60 m/min, depending on
dimension
Number of probes
2 - 5 probes (composite techology) focus,
depending on application,
4 to 5 MHz, depending on application
Set up
with a test specimen of appr. 0.5 m length
with machined arti cial reference aws
Change over time
approx. 10 - 15 min for change of dimensi-
ons, plus ap. 10 min when test mechanism is
changed to square or hexagonal material
Inspection mode
One by one through put
Pulse Repetition Frequency
0.5 - 1 kHz/probe (depending on the dimen-
sion)
A water circulation system supplies the
necessary water. Used coupling water
returns into the water circulation system
via water tanks. The ultrasonic test is
usually performed with a Krautkramer
USD 15 instrument in conjunction with a
multiplexer.
The interface echo signals received by
the probes de ne the start of the evalu-
ation gate for core aw testing (echo
start function). Signals above threshold
are evaluated separately for each probe
displayed by LEDs and are transferred to
the respective aw output.
The ROWA System also can be delivered
with the newest VIS-Electronics devel-
oped by Krautkramer.
ROWA system
Coupling water requirement
appr. 20 25 l/min
Dimensions of the test mechanism
Length in forward direction: ap. 450 mm
Height: appr. 400 mm
Depth: appr. 370 mm
Dimensions of UT electronics
Length in forward direction: ca. 600 mm
Height: appr. 500 mm
Depth: appr. 570 mm
Weight of mechanics
appr. 50 kg
Weight of electronics
appr. 80 kg
probe 1
rotating water jacket