Air dry-wet bulb temperature testing device

The utility model discloses an air dry and wet bulb temperature testing device. The device comprises a transversely-arranged air duct, a dry bulb thermometer, a wet bulb thermometer, a water containing tank, a water absorption sleeve, a centrifugal fan and a frequency converter. One end of the air duct is an air inlet; the other end of the air duct is communicated with the inlet of the centrifugalfan and discharges air from the outlet; the dry bulb thermometer and the wet bulb thermometer are detachably installed on the air duct and penetrate into the air duct, the dry bulb thermometer is located on the upwind side, the wet bulb thermometer is located on the downwind side, the water containing groove is formed in the bottom face of the air duct, one end of the water absorption sleeve is sleeved on a temperature sensing bag of the wet bulb thermometer, and the other end of the water absorption sleeve extends into the water containing groove. The rotating speed of the centrifugal fan isadjusted through the freq