Leuze electronic, Inc: Luminescence sensor

The LRT 440 series sensor from Leuze Lumiflex (Rockaway, NJ) detects luminescence in glue marks, labels, plastics, inks, etc. at a range of 50 mm (1.97").

Pw 21323 The Lrt440ser 29

The visible blue light LED outlasts traditional filament bulbs by more than nine years, according to the manufacturer. Various models detect different ranges of luminescence.

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