Apparatus and method for low-destructive measurement of the voltage in reinforcement bars, prestressing steels and round bars.

摘要

The invention relates to an apparatus and a method for low-destructive stress measurement in reinforcement bars, prestressing steels or round bars. With a milling a planar coupling location is created. The measuring head (2.1) is pressed on to the prepared with the milling device measuring point of the reinforcement steel to be measured, biasing the round steel or steel. About the two yokes (2.2) of the electromagnet an alternating magnetic field is established. The measuring coil (2.3) and the Hall sensor on the drawing test values, which in an evaluation, the mechanical stress is determined.