The StenOgraph is a non-contact system. A narrowly focused x-ray beam penetrates the moving continuous panel at an angle of 45° and is measured at 2 positions. A stationary detector measures the transmitted radiation and a moving detector measures the scattered radiation. The density-dependent value is such that in any part of the panel cross section a thickness value can be calculated.
In order to keep the quality of the measuring results constant, the StenOgraph is equipped with a calibration. During this procedure, the measured profile is compared with a reference profile.
GreCon measuring systems are constructed according to the generally acknowledged rules of technology and are thus safe to operate. All flexible parts of the StenOgraph are covered by a protective cover. The protective measures of the x-ray beam exceed those which are demanded by legislation.