MARK•EYE®
Opacity Mode Gap Sensor

The MARK•EYE® is a registration mark sensor designed to see printed registration marks on most packaging materials on a continuous web. The "one-touch" set-up enables the sensor to be adjusted with a single push of a button.

The MARK•EYE® utilizes a white LED light source that is optimized to detect printed registration marks on translucent and transparent material, and many metalized films and paper. This sensor is particularly useful on form, fill, and seal machines. Note that most packaging materials (except foil) are translucent! Many of the translucent packaging materials that we have tested allow light to penetrate either the backing material or the registration mark. Because this sensor operates in the opacity sensing mode, the color of the registration mark simply doesn't matter!

Note: Marks as small as 1/16" wide by 1/4" long can be detected, dependent upon web opacity (contrast) and velocity.

Features:
•    Detection of color mark on transparent or translucent material
•    Detection of printed mark on metalized film or paper
•    Single, one push-button setup
•    Remote AUTOSET
•    Selectable Pulse Stretcher
•    White LED Light Source 

SUPPLY VOLTAGE:
• 10 to 30 VDC
• Polarity Protected

CURRENT REQUIREMENTS: 
• 45 milliamps (exclusive of load)

REMOTE AUTOSET INPUT:
• Opto isolated momentary sinking input (10 milliamps

OUTPUT TRANSISTORS:
• (1) NPN and (1) PNP sensor output transistors
• Outputs sink or source up to 150 milliamps (current limit)
• All outputs are continuously short circuit protected

RESPONSE TIME:
• Light state response = 100 microseconds
• Dark state response = 100 microseconds

PUSH BUTTON CONTROL: 
• Automatic set-up routines based on web opacity
• One push-button set-up
• Simultaneously pushing both buttons inverts the output
• On power-up simultaneously pushing both buttons enables the program mode, allowing the pulse stretcher to be enabled or disabled 
 

LED LIGHT SOURCE:
• Pulse modulated hight intensity white LED

LIGHT IMMUNITY:
• Responds to sensor's pulse modulated light source ... immune to most ambient light

AMBIENT TEMPERATURE:
• -40ºC to 70ºC (-40ºF to 158ºF)
• Hysteresis
• Minimal Hysteresis promotes the detection between the backing material and the label depending on the settings

RUGGED CONSTRUCTION: 
• Chemical resistant to harsh cleaners such as detergents, alcohols, and ketones.
• Conforms to heavy industry grade CE requirements

Available MARK•EYE® Sensor Models:

     MEWL
     MEWLC
     MEWLDB9