Measuring device and method for detecting objects interrupting a beam of radiation
FIG. 1The invention relates to a measuring device of the type which detects the interruption of a beam of radiation (e.g. light ) by an object ( ) in the beam. The device includes a light emitter and a light detector each enclosed in a housing and . In order to accommodate different spacings between...
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| Sprache: | eng |
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| Zusammenfassung: | FIG. 1The invention relates to a measuring device of the type which detects the interruption of a beam of radiation (e.g. light ) by an object ( ) in the beam. The device includes a light emitter and a light detector each enclosed in a housing and . In order to accommodate different spacings between the housings different caps having varying size apertures are fittable to the housings. This allows varying amounts of light to be issued and/or detected. Other ways of adjusting the amount of light passing through the cap are disclosed. |
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