Instrument to teach you how to correct use of dry wet bulb

Dry wet bulb introduction: dry wet bulb, is made up of two thermometer. Which are exposed to the air known as dry bulb thermometer, ambient temperature of the air, the temperature value; Another the sensor of the thermometer must be distilled water wet gauze wrapped, gauze bottom into distilled water, known as the wet bulb, moisture temperature values. The two thermometer, temperature measurement is the dry temperature and wet respectively. Among them, in the process of measurement, wet temperature must be lower than the dry temperature value. Because the moisture in wet gauze to evaporate into the surrounding air and take away heat, and the wet bulb temperature is reduced. Due to the evaporation rate is associated with ambient air moisture content, the lower the humidity of the air, the higher evaporation rate, leading to lower wet bulb temperature. Thus, dry bulb and wet bulb temperature, temperature difference and the difference in temperature and humidity value in a certain functional relation, we will pass the temperature difference between the wet temperature and dry temperature, humidity value are obtained. Product use: apply to the laboratory, school, office and other places. Product advantages: 1) : thermometers and contrast feet together, each a thermometer is a standard control rule, each control rule is also a thermometer, truly one table is multi-purpose. 2) : small volume, simple and convenient operation, more convenient to carry and use. 3) Contains: a glass rod in the inner core, protection is not easy to fracture, increase service life. WD - 2 ( FIG. 1) Temperature humidity meter ball can make you more quickly and more convenient read relative environment humidity. Method of use: the first step: pull (inner core FIG. 2) ； Step 2: remove wet storage boxes ( Figure 3) , a cotton soaked in distilled water, will be subject to cotton does not drop; Step 3: put cotton in wet storage box after reset wet storage box; （ Figure 4) Step 4: shell as the axis, rotate to 2 - inner core 3 minutes; （ FIG. 5) Step 5: read the temperature indicated by the dry, wet two goals; （ Figure 6) Step 6: reset the inner core; （ Figure 7) Step 7: find out relative humidity on temperature and humidity control rule. Set dry bubble thermometer, for example, the temperature is shown in 22 ℃, wet bubble is indicated by the thermometer is 16 ℃, on the basis of dry foam temperature, make the corresponding temperature scale on the dry wet bubble foam temperature scale, in parallel to the position of the arrow is the value for relative humidity of 54%.