Dimensions

All measurements are listed in millimeters [inches], unless noted otherwise.

Windows

The R-GAGE sensor can be placed behind a glass or a plastic window, but the configuration must be tested and the distance 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 from the 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 between the sensor

and the window. The positions of maximum reflection from the window repeat between the minimums, and decrease in effect until the

window is approximately 150 mm (5.9 in) away. Consult the factory for pre-tested window materials 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 hood directly above the

window. Falling rain or snow in the air in front of the window, light water mist, or small beads on the face of the window are typically

not an issue. However, a thick, continuous surface of water or ice directly on the face of the window can be detected as a dielectric

boundary.

The Q240WS is a clip-on hydrophobic weather shield accessory specially designed to meet these requirements. This is recommended for

outdoor use, especially where snow or rain is likely to accumulate on the front surface of the sensor.

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