The universal humidity sensors HYGRASGARD® KAVTF and AAVTF are used to determine diverse characteristic variables in humidity measurement. Measured are the relative humidity and the temperature of ambient air. From these measurands, the different characteristic variables are internally calculated. At device version x-U, two outputs of 0…10 V are available, at Version x- I two outputs of 4 … 20 mA. Here the output variables for these outputs can be defined via DIP switches. Selectable for output 1 are relative humidity [% r.H.], absolute humidity [g ⁄ m³], mixture ratio [g ⁄ kg], dew point temperature [°C], or enthalpy [kJ ⁄ kg] (while neglecting the atmospheric air
pressure). At output 2, four different measuring ranges for ambient temperature [°C] are selectable. Ex-factory condition (default) for output 1 is relative humidity 0 ...100 % r.H., for output 2 temperature measuring range 0 ... 50 °C. Because of the different configuration alternatives provided, numerous measurement and control tasks can be solved by means of just one device. These devices are to be operated in pollutant-free non-precipitating air, with neither aboveatmospheric nor below-atmospheric pressure at the sensors. Applications for example in medical technology, refrigeration, air conditioning, and clean room technology. These sensors are appropriate for wall mounting or for duct installation.