Optical geometry measurement system for reinforcing steels

The rib measuring devices are used for automated geometric measurement in quality assurance and factory testing of steel for the reinforcement of concrete or weldable reinforcing steel with two, three, four or six rows of ribs. Gewi, Bamboo, profiled and intended surface or glass-reinforced plastic (GRP), glass-fiber reinforced plastic (GFRP) can be measured. The relative rib area (fR) or relative indentation area (fP) will be detemined after the measurement is carried out according to German DIN 488, EN ISO 15630, BS 4449 and most international standards.

For the measurement, the samples must have a length  between 200 mm and 500 mm. The test bar is clamped horizontally or vertically in a three-jaw chuck and, depending on the measured variable, illuminated with high-contrast or transmitted light. The test object is optically captured from different angles through a rotation unit by two to three high-resolution CMOS black and white cameras and displayed in a window on the computer monitor

A computer and an image processing unit digitize the respective image. The measuring principle is based on the search of black and white transitions, where the object boundaries are determined by means of a gradient method from the gray levels.

The instrument is calibrated by two certified calibration rods of different diameters. Calibration is automatic and can be repeated at any time.

 

Data sheet for Rib measuring system

User manual

Gallery

Video demo

Need more help? Contact us