Accurate air conditioning unit of special low humidity in laboratory

The utility model provides an accurate air conditioning unit of special low humidity in laboratory, its includes fillter section that the order is connected, the cold section of table, return air section, dehumidification section, secondary return air section, heating section, humidification section, fan section in advance, still be equipped with the cold section of secondary table between secondary return air section and the heating section, and the output of fan section be equipped with a static pressure case, the static pressure incasement put one the installation roof beam to be equipped with a temperature and humidity sensor on this installation roof beam. The utility model provides a simple structure, the accurate rapid accurate air conditioning unit of special low humidity in laboratory of the accurate just feedback of humiture data sampling to there is the hysteretic defect of control system that the deviation leads to in it to solve current combined type air conditioner group humiture sampling.