Wet bulb thermometer to measure air temperature and humidity are listed in the table

Dry wet bulb temperature measure air temperature and humidity are listed in the table of a pair of compoundplacement thermometer. Wet bulb table is a pair of simultaneous determination of air temperature and humidity specifications are the same, the thermometer device in the small screen. A used to measuring temperature, said & other; Dry bulb thermometer & throughout; ； Another group of bandage a gauze, gauze the lower part of the dipping into a cup with cover. Away from the ball at the top 3 cm, cup of distilled water ( Only allow use medical distilled water) For wet wet gauze ball, said & other; Wet bulb temperature table & throughout; 。 Humidity is according to the principle of thermodynamics by the difference between dry bulb temperature and wet bulb temperature table calculated value. Install a place: in the center of the small screen plate, install a thermometer bracket, dry and wet bulb temperature table vertical suspension in brackets on both sides of the ring, the ball down, dry bulb in the east, wet bulb in the west, is apart from the ground 1 ball ministry center. 5 m high. Wet bulb temperature table ball dress a gauze, gauze the lower part of the immersed into a cup with cover. From the wet bulb ball 3 cm at the top, cup of distilled water ( Only allow use medical distilled water) For wet wet gauze ball in. Maintenance points: (1) must pay attention to keep dry wet bulb temperature table of normal state. Such as found in the thermometer calibration magnetic plate breakage, capillary contained mercury drops of precipitation, black oxide or water post interrupt, etc. , should be replaced at the same time, scrap. 2 dry bulb thermometer should always keep clean and dry. Before observation to inspect the equipment and instruments, such as found a dust or water on the dry bulb, shall be immediately with a clean soft cloth wipe gently. (3) wet gauze ball must always keep clean, soft and moist, the general should be changed once a week. In case of dust weather, such as wet gauze ball obviously is stained with dust, should be replaced immediately. , mining area, or smoke more places on the island, wet gauze ball easy to salt, oil, dust and other pollution, should be replaced to shorten the duration of the gauze. (4) in the cup filled with distilled water to constantly, keep clean, generally change once a week.