Electromagnetic Eddy Current Lift-Off Compensation
Electromagnetic eddy current lift-off compensation corrects measurement errors due to varying probe-to-surface distance to improve signal accuracy.
Physical-Chemical Mechanism of Action
Electromagnetic eddy current lift-off compensation corrects measurement errors caused by the varying distance of the probe to the metallic surface. This effect influences the magnetic field and leads to inaccurate readings.
Metallurgical Relevance & Risks in Welding
Without compensation, the measurement of defects such as cracks or corrosion may not be accurate, leading to misdiagnosis. This increases the risk of undetected flaws and can cause safety issues in the product.
Workshop Practice & Instructions
To set up compensation, the distance between the probe and the surface must be precisely adjusted. It should remain constant to minimize measurement errors. For automatic systems, calibration is required to ensure optimal signal accuracy.