The Series 4055 color sensors from Contrinex, Old Saybrook, CT, are used for color control and color sorting processes. The sensors feature three teachable color channels with independent 200 mA outputs, which allow for three color tones to be programmed. The teach process offers a choice of five different tolerance levels. Color detection within the operating range of 30 to 40 mm is independent of the target distance. The sensors feature switching frequency to 4 kHz, adjustable pulse delay and stretching, NPN and PNP versions, and 10-bit precision of R, G, and B signals.
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