The calibrateable room humidity and temperature sensor HYGRASGARD® RFF ⁄ RFTF measures the relative humidity and ⁄ or temperature of air. It converts the measurands humidity and temperature into standard signals of 0 -10 V or 4...20 mA and is optional available with or without display (for displaying actual humidity and actual temperature) in an elegant enclosure made of plastic, with snap-on lid, base with 4-hole attachment for installation on vertically or horizontally installed in-wall flush boxes, with predetermined
breaking point for on-wall cable entry, or in enclosures made of stainless steel (top and bottom part are of stainless steel, the lid is screwed on), vandalism-secure version e.g. for schools, military barracks, and public buildings. Relative humidity (in % r.H.) is the quotient of water vapour partial pressure divided by the saturation vapour pressure at the respective gas temperature. HYGRASGARD® RFF ⁄ RFTF are applied in non-aggressive
dust-free ambiences in refrigeration, air conditioning, ventilation and clean room technology, in interior rooms such as residential rooms, offices, hotels, technical rooms, meeting rooms and convention centres. These measuring transducers are designed for exact detection of air temperature and humidity. A digital long-term stable sensor is used as measuring element for humidity and temperature measurement. Fine adjustment by the user is possible.

Room humidity measuring transducers HYGRASGARD® RFF, output: humidity active: