Atmospheric humidity measurement

Within the CARIBIC project (www.caribic-atmospheric.com) a dual channel Hilase-Hygro instrument has been operating on-board of a commercial aircraft (Airbus A340-600 of Lufthansa) since May 2005. It measures atmospheric humidity and/or total water concentration over wide dynamic ranges with a fast response time and with high accuracy. Other Hilase-Hygro instruments were tested at research aircrafts.