Banner R-GAGE Q130RA Series Instruction Manual

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Banner R-GAGE Q130RA Series Instruction Manual Manual pdf 21 page image

8 WindowsThe R-GAGE sensor can be placed behind a glass or a plastic window, but the configuration must be tested and thedistance from the sensor to the window must be determined and controlled prior to installation. There is typically a 20%signal reduction when the sensor is placed behind a window.Polycarbonate at 4 mm thickness performs well in most situations, but the performance depends on filler materials. Thinner(1 to 3 mm) windows have high reflection. The amount of reflection depends on the material, thickness, and distance fromthe sensor to the window.Locate the sensor in a position of minimum reflection from the window, which will repeat every 6.1 mm of distance betweenthe sensor and the window. The positions of maximum reflection from the window repeat between the minimums, anddecrease in effect until the window is approximately 150 mm (5.9 in) away. Consult the factory for pre-tested windowmaterials which can be used at any distance without issue.Additionally, the face of the window should be protected from flowing water and ice by use of a flow diverter or hooddirectly above the window. Falling rain or snow in the air in front of the window, light water mist, or small beads on the faceof the window are typically not an issue. However, a thick, continuous surface of water or ice directly on the face of thewindow can be detected as a dielectric boundary.R-GAGE® Q130RA Sensorwww.bannerengineering.com - Tel: + 1 888 373 6767 21