Systems - ROHMANN
Systems - ROHMANN
Systems - ROHMANN
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<strong>Systems</strong><br />
Internal Tube Inspection with the IHR-Rotor<br />
Inspection of tubes at the manufacturer<br />
Probe – outside<br />
Push puller<br />
Reference tube<br />
IHR internal rotor<br />
Support and<br />
driving rollers<br />
ET-inspection of the inner surface of a tube and UT-inspection of the internal defects. The probe holder for the<br />
UT-sensor that is located on the outside may also be equipped with another eddy current probe.<br />
Reference tube<br />
Tube to be inspected<br />
Reference tube<br />
Push-pull cable for the IHR-rotor<br />
Eddy current inspection system for the automatic inspection of surface defects using ET and for internal defects<br />
using UT<br />
Internal tube inspection<br />
Rohmann manufactures special internal rotors that are inserted manually or with a device deep<br />
into the tube or the drill hole to check the integrity of tubes and deep drill holes. This procedure is<br />
used to inspect heat exchangers or pressure pipes, axial bores on rotor disks and heavy artillery<br />
such as gun barrels.<br />
The internal rotors are manufactured as standard IHR rotor in various graduations for diameters<br />
greater than 13 mm. The diameters of the contactless rotating probes, the protective caps and the<br />
centering devices are selected based on the actual diameter of the tube that is to be inspected.<br />
Depending on the voltage that is supplied by the test instrument the rotating speed of the contactless<br />
probe ranges from 1,200 to 1,600 rpm. The test speed depends on the rotor speed, the<br />
active area of the probe and the speed with which the device is pulled.<br />
Sensors that touch the surface are available for tubes with larger diameters. These are often<br />
inspected on mechanical benches and/or with mechanical feed devices that feature computers to<br />
record and display the data of the inspection. Sensors that touch the surface are moved at lower<br />
speeds to reduce wear and avoid damage that may be caused by excessive friction. The wear<br />
protection may be replaced.<br />
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<br />
ET IHR-rotor<br />
Rohmann GmbH<br />
Push puller
<strong>Systems</strong><br />
Test systems and accessories:<br />
ELOTEST PL500/LP eddy current inspection instrument for<br />
the inline inspection<br />
EloLine software to document the test results of long<br />
products<br />
IHR40/2-2 rotor featuring a sensor whose diameter<br />
may be adjusted<br />
ELOTEST PL500<br />
Designed as 2-channel unit in a 19”/4HU-rack;<br />
375 mm deep<br />
• Test frequency: 10 Hz to 12 MHz<br />
• Front panel featuring 9”-color display 800 x<br />
480 pixel. 16 : 9-display for the simultaneous<br />
depiction of up to 8 signals with a display rate of<br />
250,000 signal dots/channel<br />
EloLine software:<br />
Standard software to visualize and document test<br />
results during the eddy current inspection of long<br />
products. Simple circumferential coil systems and<br />
complex multi-channel rotor or multiplex applications<br />
are supported. Up to 8 test channels are<br />
processed and combined into a collective result that<br />
may be evaluated in a location-dependent manner.<br />
IHR25 rotor for 33.5 mm Ø with centering device, sensor<br />
protective cap and push pull hose<br />
IRSA and IRSD sensors:<br />
The standard rotating probes for the IHR-rotors are<br />
interchanged based on the diameter of the tube.<br />
One sensor is required per tube diameter. The<br />
probes work contactless and may additionally be<br />
protected against touching the tube. Standard IRSA<br />
absolute probes come with a KA-3 probe element<br />
whilst the IRSD differential probes come with a<br />
KD-7 probe element. The dimensions range from<br />
17.5 mm to 50.0 mm in 0.5 mm-graduations.<br />
RSVF rotating probes:<br />
RSVF-probes are available in various dimensions<br />
and regulating ranges starting at a diameter of 60<br />
mm. The epoxy probe carrier may be equipped<br />
with various probe types (absolute, differential,<br />
multi-differential). An epoxy platelet that 0.3 mm<br />
thick is used as wear protection. Depending on the<br />
rotor the probe carriers may be equipped with 1,<br />
2 or 3 channels and distance compensation. The<br />
spring-loaded holder presses the probes slightly<br />
against the inner wall of the tube thus compensating<br />
for minor ovalities.<br />
Rohmann GmbH<br />
Test systems and accessories:<br />
IHR-rotors<br />
Available standard sizes:<br />
Rotor type internal Ø min. internal Ø max.<br />
IHR16 17.5 mm 25.0 mm<br />
IHR18 23.0 mm 30.0 mm<br />
IHR25 30.0 mm 50.0 mm<br />
IHR40/2-2 starting at 40.0 mm<br />
IHR60/2-2 starting at 60.0 mm<br />
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
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