Banner EZ-ARRAY Lens Shields - Manual (Page 2)

EZ-SCREEN
™
Lens Shield
WARRANTY: Banner Engineering Corp. warrants its products to be free from defects for one year.
Banner Engineering Corp. will repair or replace, free of charge, any product of its manufacture found
to be defective at the time it is returned to the factory during the warranty period. This warranty does
not cover damage or liability for the improper application of Banner products. This warranty is in lieu
of any other warranty either expressed or implied.
Banner Engineering Corp., 9714 Tenth Ave. No., Minneapolis, MN USA 55441 • Phone: 763.544.3164 • www.bannerengineering.com • Email: [email protected]
P/N 61960 rev. A
®
Description
The model EZS-xx Lens Shield is a replaceable protective cover for the lens of an
EZ-SCREEN sensor. The shield is made of 1.5 mm (0.06") thick clear polycarbonate to
protect the emitter or receiver lens from damage due to weld flash or impact.
Shield models are available for every sensor length (see table on the front of this
sheet). The shields attach to the sensor with an adhesive-backed Neoprene foam
gasket.
Application Note: When shields are installed on both the emitter and receiver, excess
gain is reduced by 36 percent and maximum operating range is reduced by 20 percent.
Installation
Remove all dust, dirt, and oil from the metal surfaces on all four sides of the emitter or
receiver lens, using a mild detergent or window cleaner and a soft cloth. Also clean the
sensor lens and the lens shield, if needed.
NOTE: Avoid cleaning agents containing alcohol, as they will damage the sensor’s
acrylic lens. If in doubt about the composition of a cleaning agent, test a small
area of the acrylic sensor lens away from a beam location (as indicated on the
housing sides) by applying the cleaning agent and allowing it to evaporate.
The foam gasket is pre-attached to the lens shield. Peel the paper backing from the
foam gasket. Press one end of the lens shield to the bottom end of the sensor, aligned
with the end cap’s bottom edge, and apply pressure, moving slowly to the top end. The
width of the lens shield corresponds closely to the width of the sensor, so it is easy
to keep it centered during mounting. Peel away the protective coating from the lens
shield’s outer surface.
Maintenance
To prevent loss of excess gain, the shields should be cleaned when they become dirty.
Remove dirt and/or oil from the front face of the shield using a mild detergent or
window cleaner and a soft cloth. Avoid industrial cleaning agents or cleaning agents
containing alcohol, as they may damage the polycarbonate shield material.
Replacement
The shield should be replaced when it becomes pitted or scratched, or excess gain will
be decreased.
To remove, peel the lens shield away from the sensor starting at either end, and
continuing to the opposite end. All or most of the gasket will remain attached to the
sensor; peel the gasket material away. Clean the sensor and install the new lens shield
as described in the instructions on the front of this sheet.