Harris Instruments Videos

Optical camber detection for slit coil, welded tube, roll formed sections, extrusions, or any other continuously produced section with parallel outside surfaces.

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The videos below only show a single plane detector. Two units may be employed at 90 degrees to one another for X and Y deviation detection.

Click on a picture above to see a video of the camber detector in action.

This process assumes that the material to be measured is parallel and is resultant from a slitting and or shearing process.

The video on the left shows the camber detector looking at a metal strip sample. In the example, the artificial sample strip has a straight side and a cambered or curved side. It starts out showing the straight side and then is flipped to the cambered side and then back to the straight side. The camber can be seen on the readout as a red line to the left. The line to the right when the strip is being flipped is only the sensors being interrupted, i.e., the light source was being blocked. The camber detector is made up of three points that define a line. If there is a deviation off of the average line center reading as defined by the three points, then the bar graph display will show such. Assuming that the strip edges are parallel to begin with, only one side needs to be measured. The middle photo above shows the detector head arrangement and how the strip is guided over the detectors with edge stops.

The middle video shows a strip of metal passing along the path that is defined by the three detector input devices.

The video on the right shows the readout display of a strip running across the detector heads that exhibits camber. The red bar indicates how much the strip deviates from the defined center line average.

Camber and edge misalignment may be detected in metal, plastics, paper, film, fabric, tubing, roll formed sections, extrusions, etc., as long as light cannot pass through the material to be measured and that the edges of the material are parallel to begin with. 

For more information on the Harris Camber detector, contact us.