Wireless Surface Sensors

Multiple Point Readings from a Remote Location

Too often, RWIS weather stations have been located where power and telephone connections are conveniently available, not necessarily where they are most needed. Properly located pavement surface sensors are an essential component of RWIS weather stations. What do you do if you want to measure 20 points on a large interchange, or 4 lanes, at a location 3 miles from your central RWIS weather station? Coastal's "Tireless Wireless" is the answer. The wireless sensor station replaces cable runs with a wireless link. Simply connect a short cable from the sensors to a wireless control box located by the side of the road or bridge deck. That's it! The wireless controller communicates the information to the system, just as if the sensors were connected directly with a cable.

The Coastal surface sensor is exceptional because of its sensitivity, robustness and small size (the small size minimizes the thermal mass created by the sensor which accounts for most of the error in existing sensors). The sensor is totally passive, with no moving parts.

Surface sensors can electronically sample the following pavement conditions:

Dry pavement condition Wet pavement condition Moist pavement condition Dew pavement condition Frost pavement condition

Pavement surface temperature, accurate to 0.25º F. Wet but not frozen pavement condition below 32º F Snowy or icy pavement conditions at or below 32º F Solution freeze point from -5º F to 32º F. Chemical concentration of de-icing chemical from 0% to 100% Percent of ice present on pavement from 0% to 100%

NOTE: It is not necessary for the DOT or other agency to obtain a radio license to install or operate this system.

Please contact us for complete information on Coastal's weather stations.