Important notes
examined for damage and recalibrated after any such 
incident. Do not use any product which you know or 
suspect to be faulty.
Reference samples used for calibration should, ideally, 
have the same material properties as the object to be 
tested, or a known relationship to it, established by a 
laboratory test.
Equipment calibration should be checked frequently 
during testing to assure valid test measurements.
As a matter of good practice and wherever possible, 
suspected defects in critical areas should be cross 
checked using appropriate alternative indication tech-
niques.
Any question about the use, operation, specifi cations 
or special considerations relative to the  particular 
GE Inspection Technologies product you are using 
should be addressed to your local sales representative, 
the distributor or GE Inspection Technologies direct.
Eddy current based instrumentation works by measur-
ing minute electromagnetic fi elds. Interfering signals, 
even at a level satisfying CE mark requirements, may 
be able to mask or distort this information. The user is 
responsible for ensuring that no such effect is occur-
ring.
GE Inspection Technologies pursues a policy of con-
tinued development of its products. The company re-
serves the right to change specifi cations without prior 
notice.
Introduction
AutoSigma 3000  Issue 04, 06/2007  1 - 3