The calibrateable duct humidity sensor HYGRASGARD® KFF-20 is a sturdy industry version equipped with steel sinter filter that measures the humidity of air in accuracy class ± 2 % r.H. The humidity transmitter converts the measurand humidity into standard signals of 0 – 10 V or 4...20 mA and is optional available with or without display, with terminal box enclosure made of impact-resistant plastic and enclosure cover with quick-locking screws. It is used in non-aggressive dust-free ambiences in refrigeration, air conditioning, ventilation and clean room technology, in air and air conditioning ducts for humidifying / dehumidifying of residential rooms, offices, hotels, technical rooms, meeting rooms and convention centres. Relative humidity (in % r.H.) is the quotient of water vapour partial pressure divided by the saturation vapour pressure at the respective gas temperature. These measuring transducers are designed for exact detection of humidity. A digital long-term stable sensor is used as measuring element for humidity measurement. Fine adjustment by the user is possible. A mounting flange is included in the scope of delivery.

Duct humidity measuring transducers HYGRASGARD® KFF-20 including mounting flange: