ANON industrial wet bulb thermometer high quality 272 wet and dry bulb thermometer

Wet and dry thermometers are Necessary tool for industrial and agricultural production and scientific experiments to measure relative air humidity or moisture.

It is widely used in food storage, greenhouse cultivation, sericulture silk, tobacco collection and drying, weather observation, food processing and other places.

The Metal shell wall-mounted dry-wet thermometer function
1. Measuring temperature -20 degrees -50C accuracy 0.5C
2. Measuring humidity 0-100% accuracy 1%

The Size of dry-wet  thermometer 
1. Weight:1 kg
2. Height:39 cm
3. Width0:15.5 cm
4. Thickness:3.8 cm 6.4 cm

The wet bulb thermometer is an instrument for measuring air temperature and humidity.
 Structure: consists of two identical common thermometers, one for measuring the temperature, called the dry-bulb thermometer; the other is wrapped in gauze soaked in distilled water in the ball, and the lower end of the gauze is immersed in distilled water, called a wet-bulb thermometer. Since the gauze wrapped in the wet-bulb thermometer absorbs heat after evaporation, the number of indications is smaller than that of the dry-bulb thermometer. The wet ball gauze is often renewed.
When the air is dry, the gauze of the wet-bulb thermometer evaporates quickly and absorbs heat. The difference between the two thermometers is relatively large. The greater the difference between the two thermometers, the drier the air.
When there is a lot of water vapor in the air, the wet-bulb thermometer's gauze evaporates slowly and the heat absorption is low. The difference between the two thermometers is small. The smaller the difference between the two thermometers, the more humid the air.

ANON metal shell wall mounted household indoor outdoor thermometer Instructions:

1.The model AN-272 is designed to measure the relative humidity in the air.
2. The instrument must be placed in a place where the air circulates (wind speed is about 0.12m/s. If the wind speed is too large, the formula can be used to calculate the temperature and humidity.)
3. Before using, inject clean water into the water bottle, and immerse the wet ball gauze in the bottle. Be careful to keep the gauze and bottle water clean. Do not arbitrarily raise or lower the position of the water bottle.
4. The drum installed in the middle of the moisture meter is the air relative humidity value table, used to check the relative humidity in the air, for example: (dry bulb temperature 34 °C, wet bulb temperature 29 °C, two ball temperature difference of 5 °C , and then turn the shaft to find the wet and dry difference 5, then look at the middle of the dry and wet Celsius 34 ° corresponding to the middle of the shaft, check the table that the relative humidity of the air is 64%.)
5. This instrument is equipped with a vacuum inside the capillary in the thermometer. When it is flat or inverted, the mercury in the capillary will cause the phenomenon of dislocation and backflow due to no air pressure. This is normal. If mercury is disconnected, place the instrument vertically and gently tap the shell so that mercury can be connected before use.