Width Gauges

HLW-series gauges are designed to measure the width on the processing line of flat materials, by using the principle of optical telecentric projection. Material is illuminated from the back side by a homogeneous light source; from the opposite side a photo sensor detects the position of light/dark transition produced by the material edge. Since the system produce a parallel optical projection of the material’s edges, measurement is stable even with a certain material movement from the nominal pass-line. This principle allows to obtain high precision measurements on materials with wide range of nominal widths.

All optoelectronic components are mounted in heavy-duty mechanical frames, typically a fork shapes, suitable for working in harsh industrial environments.

The measuring result is available in digital and graphic form on the operator panel with immediate notice of out of tolerance and as a control report, automatically generated and sent to a server via Ethernet.

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In case of narrow materials, a single head with the couple emitter/receiver detects the transitions of both edges and provides the measurement of width without needs of reposition in case of material type changes. In case, instead, of large materials, two couples of sensors with a certain reading area are necessary,  one at each material’s edge to cover the whole measuring range. The two couples can be fixed or movable, with manual or motorized stage. In both cases, width measurement is calculated as distance between the positions of the two light/dark transitions.

HLW width gauges are available in three different configurations: single head standard model with measuring range up to 75 mm; double head model with manual setting and measuring range up to 250 mm; double head model with motorized setting and measuring range up to 2000 mm. Special models on request.

VLW-series gauges are designed to measure the width on the processing line of flat materials and they are based on the laser line triangulation. A thin laser line is projected on the material’s edge. Thanks to an appropriate optical system, fixed with a certain angulation, the image of the line on the material is projected on a 2D optoelectronic transducer which provides the location of the interruption of the line and therefore of the material‘s edge. The characteristics of this principle are such to allow large reading areas without the need for back lighting and for a fix pass-line.

All optoelectronic components are mounted in heavy-duty mechanical frames, typically a fork shapes, suitable for working in harsh industrial environments.

The measuring result is available in digital and graphic form on the operator panel with immediate notice of out of tolerance and as a control report, automatically generated and sent to a server via Ethernet.

LARGHEZZA-VLW-misuratore-ottico-laser-IFELL

VLW width gauges are realized with working distance and reading area depending on the application. So, it is possible to obtain system configurations with one or more heads, fixed or movable, proper to the specific case.

MLW gauges are designed to measure directly in the production line the width of parallel strips placed one near the other with a minimum spacing in between. They are based on the  principle of optical projection of a light line between an emitting and receiving element, which detect the position of the light/dark transition produced by the material edges. The two elements are mounted in the opposite sides of the target material.

The width of each strip is calculated from the distance between the position of the two dark/light transitions produced by the strip right and left edges. The measurement is displayed in graphic and digital form on the operator panel with immediate notice of out of tolerance and it is reported on the automatically generated control report and sent to the network via Ethernet.

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MLW width gauges can have three different configurations: fixed, movable or scanner. They can be setted with focused or collimated optic, according to the requirements of the specific application. The necessary measuring range is obtained by the combination of modular elements.