Contrast Sensor - EMX Industries, Inc.

CNTX Contrast Sensor Overview

Our contrast sensor increases process throughput with high-speed, accurate, and reliable contrast differentiation. The CNTX™ combines a broad-spectrum light source, small spot size, and fast response to achieve high-speed contrast differentiation of both neutral and color targets. The CNTX™ employs our field-proven, patented technology, for effective detection of registration marks, glossy surfaces, cap inserts, date codes, and sorting of the product by color in many industrial applications. The durable plastic case and polycarbonate lens provide robust construction expected in an industrial environment.

The CNTX™ (also known as a Registration Mark Sensor) combines the small spot size of 3mm (0.4mm spot size also available) and fast response times to achieve high-speed contrast differentiation of both neutral and color targets.

The sensor provides a numerical display of 50 grayscale levels. The broad-spectrum light source allows accurate detection of a wide range of colors against any background. The flexibility of the CNTX™ makes it easy to set up in a wide variety of printing, packaging, and converting applications.

Contrast Sensor Applications:

Detect registration marks
Confirm the presence of date codes
Detect glossy surfaces
Sort products by color
Detect cap inserts

Read our application note on how contrast sensors detect transparent objects.

Have Questions? CLICK HERE

Features Within Our Contrast Sensors

High color contrast sensitivity and resolution
High detection speed, 25-microsecond discrete output response
Broad-spectrum white LED light source allows detection of all colors
Calibration feature and three light source intensity settings allow a wide range of adjustment capability
Easy-to-use operator adjustable threshold
Fast and convenient integration (In one sensor you get both analog and discrete output, auto-detect for PNP/NPN configuration)
Unique numerical display indicates measured levels making process setup easy
Circular spot allows for any orientation of sensor to mark

Model Number	CNTX-30-TP	CNTX-30-TP-2M	CNTX-35-TP	CNTX-30-T	CNTX-30-0	CNTX-05-0
Spot Size	3mm	3mm	1mm	3mm	3mm	0.5mm
Display Range	N/A	N/A	N/A	N/A	0-50	0-50
Sensitivity	Standard	Standard	Standard	Standard	Standard	Standard
Gain Selections	Auto Teach	Auto Teach	Auto Teach	Auto Teach	1X-10X	1X-10X
Spectral Sensitivity	400-700nm	400-700nm	400-700nm	400-700nm	400-700nm	400-700nm
Operating Range	28mm	28mm	28mm	28mm	28mm	28mm
Discrete Output	PNP/NPN	PNP/NPN	PNP/NPN	PNP/NPN	PNP/NPN	PNP/NPN

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