Product Description 
 DHM2 mechanical ventilation psychrometer mainly composed by two identical shuiyin temperature and a ventilator, simple structure, process and strong, easy to learn and use. Mainly applicable to the determination of the temperature and relative humidity of the air, the product Traits is suitable for field operation is to measure the temperature and humidity of the second measurement standard. 

 DHM2 mechanical ventilation psychrometer technical parameters 

 Ambient temperature: measuring air humidity in the normal working environment -10 ℃ ~ 45 ℃ 
 Humidity measuring range: 10% RH ~ 100% RH 
 Thermometer measuring range: -36 ℃ ~ 46 ℃ -26 ℃ ~ 51 ℃ are 
 Value of the minimum scale of the thermometer scale: 0.2 ° C 
 The thermometer the bulbar around ventilation speed after the start of the wind is: the the first 4min minutes late:> 2.5m / s, the the first 6min minutes late:> 2.2m / s, in 6min bell end change in ventilation rate per min : <0.2 m / s 
 The entire duration of action of the ventilator:> 9min 
 Dimensions: 92.5 mm × 92.5 mm × 415mm 
 Weight: 1kg