AWI’s Freezing Rain Sensor Receives Approval from FAA

Accurately Detects Presence of Icing Conditions Down to 0°C

Sacramento, CA (September 13, 2005)icy_conditionsAll Weather, Inc., a leading manufacturer of high accuracy, high dependability weather information systems and meteorological sensors, today announced that the Model 6495 Freezing Rain Sensor has received approval from the Federal Aviation Administration (FAA) for use in airports across the US. The Freezing Rain Sensor accurately detects the presence of icing conditions at temperatures as low as 0°C. The unit senses an occurrence of freezing rain by the change in the probe tip’s oscillating frequency; changes are detected even with the accumulation of ice, frost, or wet snow. Once icing conditions are detected, they are analyzed using the AWOS freezing rain algorithm and transmitted for remote display to airports and crews.

The Model 6495 Freezing Rain Sensor’s robust design allows the unit to completely melt up to 3.8 mm of ice within 30 seconds at -20°C. After deicing, the sensing probe cools quickly and is ready to sense ice formation again. Water droplets are prevented from collecting around the probe in still air conditions. In addition, the sensor’s ability to shed water eliminates false signals due to refreezing at the base of the unit when the atmosphere does not contain liquid water to form ice on the probe. Extensive internal self-tests and fault diagnostics guarantee accurate measurements.

Automated Weather Observing System (AWOS)
The Freezing Rain Sensor is part of AWI’s Series 900 AWOS. In addition to freezing rain, the AWOS measures and reports wind speed, wind gusts, wind direction, relative humidity, temperature, visibility, precipitation, altimeter setting, density altitude, cloud height and sky condition, present weather, and lightning-all essential data for the safe and economic operation of any airfield, large or small.

AWI’s AWOS system is designed to meet the stringent standards of the FAA, as well as those of the international governing bodies International Civil Aviation Organization (ICAO), World Meteorological Organization (WMO), and Transport Canada. All systems measure and report essential weather information and include full Remote Maintenance Monitoring capabilities to ensure continuous monitoring.

About All Weather Inc.

All Weather, Inc. (AWI) is a leading developer of high accuracy, high dependability weather information systems that help users minimize risks in an unpredictable world. The company provides AWOS aviation weather systems, air traffic control display systems, as well as a wide range of high accuracy meteorological sensors and systems, including laser ceilometers, runway visual range systems, lightning detection sensors, and a variety of other meteorological sensors. All Weather, Inc. is the preferred development partner of the FAA. The company’s ASOS, AWOS, and AWSS systems meet the stringent standards of the International Civil Aviation Organization (ICAO), the World Meteorological Organization (WMO), and Transport Canada. AWI has installed over 1700 high-end automated weather systems around the globe, working with such leading authorities as the U.S. National Weather Service, ExxonMobil, Cerrejón Coal, and INFRAERO (Brazil). For more information, see

For further information, contact:
Bernard Kirby, VP Sales & Marketing
All Weather, Inc.
1165 National Drive, Sacramento, CA 95834 USA
+1 916.928.1000, Fax: +1 916.928.1165


PR Office:
Shari Worthington, President
Telesian Technology Inc.
49 Midgley Lane, Worcester, MA 01604 USA
+1 508.755.5242, Fax: +1 508.795.1636

© 2005 All Weather Inc. All rights reserved.

Leave a Comment