All rights reserved! 1983-2015 Rudolf Dorn, www.dorn-systeme.de, info@dorn-systeme.de

Seam Tracking Systems
Automatic seam scanning and position adjustment.



Multi-Sensor-System with automatic
adjustment of weld parameters



By the use of an electric arc control
and additional analysis and adjustment
of torch distance, seam width and seam
filling can be regulated too.
The analysis of all signals occurs by
the remote pendant control on a real-time
basis and automatically.
Variations in the wire supply and changing
weld parameters are compensated.


Arc Control RD1000A

Function :
The magnetic field of the torch package is indicated in the measuring ring and is evaluated.
Measurable power current: 70-500 A.
Housing approx. 50*220mm.

Application :
- Capture of weld current for distance adjustment and switch off at missing wire.
- Capture of current rise at sides, for regulation of seam position.
- Average capture of weld current, for regulation of amplitude width and weld parameters.
- Regulation of seam filling.

Mounting :
The electric arc control will be clamped at the torch package, or at the ground line.
Because of the large distance to arc, preventive protections are not necessary.
The connection to the automate occurs by a rotated cable with 1.5-m length.


Electromechanical Sensor RD1000EM

Function :
Stroke and rotation movements of the scanning head are internal
optically captured and converted to electric signals.
Resolution approx. 0.1 mms.

Application :
- The most many-sided sensor by different scanning heads for all seam forms.
- Automatic position and distance regulation.
- Scanning with or without weaver, with or without activated gun.

Mounting :
The sensor is mounted on torch line and is protected
by an intermediate metal sheet.


Active Magnetic Field Sensor RD1000AM

Function :
The magnetic field, changing with distance to magnetizeable metals, is evaluated.
Distance 3-30 mms, resolution approx. 0.1 mm.
The housing is a completely closed aluminium mug.

Application :
- Fully automatic distance regulation.
- Fully automatic distance and position regulation at corner seams.
- Limit switch function.

Mounting :
The sensor is mounted on torch line and is protected by an intermediate metal sheet.


Inductive Sensor RD1000I

Function :
The inductance of the measuring coil, at changing distances to metals, is evaluated.
Distance 3-8 mms, resolution approx. 0.1 mm.
Housing M30 with assembly nuts.

Application :
- Fully automatic distance regulation.
- Limit switch function.

Mounting :
The sensor is mounted at the side to the torch, protected by an intermediate metal sheet.



Line Sensor RD1000ZK

Function :
A CCD line camera optically indicates the welding position.
Measuring range 50 mms, measuring distance 200-300 mms.
Resolution seam width approx. 0.1 mm / position approx. 0.2 mm.
Housing M30 with assembly nuts.

Application :
- Linear positioning
- Scanning of V-shape seam welds with space, analysis of position and space width.
- Capture of edges.
- Capture of holes.
- Fully automatic regulation of amplitude width and feed parameters.