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Danieli Automation – ID2202
Figure 9 shows the width of the field of measurement based upon the distance of use. The field of view
is essentially a rectangle with the dimensions shown in the figure.
The detector must be placed at such a distance that the field of measurement covers all the positions
in which it can find material to be detected.
The ID2202 is normally installed to the side or above the rolling line. Avoiding a down to top orientation
would be better because dust and scale could soil the optical window, preventing its correct operation.
When possible it is better to install the ID2202 to the side of the line.
It is necessary to avoid that fumes or steam reduce the visibility of the material, preventing a correct
measurement (fumes and steam may be removed blowing air at low discharges, using for example an
industrial fan).
ATTENTION !
Avoid fastening the detector onto structures subject to vibrations.
Between the detector and bars there must not be any objects, still or moving, that can interfere with
detection.
It may be opportune to equip the photodetector with mechanical and additional thermal protection that
guard it against accidental impacts or direct radiation from material. In figure 14 we see a possible
example of support with protection, designed to permit, when necessary, rapid access for any
operations of adjustment and/or maintenance.
If protection is present between the material and the detector, arrange that protection with a window of
sufficient width so that the material is visible for a section long at least as the detection field width.
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Danieli Automation Standard - Installation Use and Maintenance Manual - ID2202
9. Material detection field in relation to distance