wet-and-dry-bulb thermometer instrument

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• Thermometer — A device used to measure the temperature of gaseous, liquid or solid matter or of a chemical reaction such as fire. Temperature measurement is important to a wide range of activities, including industry, scientific research, and health care. In… …   Medical dictionary

• Wet-bulb temperature — The wet bulb temperature is a type of temperature measurement that reflects the physical properties of a system with a mixture of a gas and a vapor, usually air and water vapor. Wet bulb temperature can have several technical meanings:… …   Wikipedia

• dry- and wet-bulb hygrometer — An instrument to measure the dew point, relative humidity, and vapor pressure. It essentially consists of two ordinary, accurate, mercury thermometers. One has thin muslin wrapped around it and is kept wet; it is called a wet bulb thermometer.… …   Aviation dictionary

• Hygrometer — Not to be confused with hydrometer. A hygrometer (UK: /haɪˈɡrɒmɪtə/) is an instrument used for measuring the moisture content in the environmental air, or humidity. Most measurement devices usually rely on measurements of some other quantity …   Wikipedia

• hygrometer — /huy grom i teuhr/, n. any instrument for measuring the water vapor content of the atmosphere. [1660 70; HYGRO + METER] * * * ▪ meteorological instrument       instrument used in meteorological science to measure the humidity, or amount of water… …   Universalium

• hygrometer — Any device for measuring the water vapor in the atmosphere, usually indicating relative humidity directly. [hygro + G. metron, measure] * * * hy·grom·e·ter hī gräm ət ər n any of several instruments for measuring the humidity of the atmosphere *… …   Medical dictionary

• hygrometer — n. an instrument for measuring the relative humidity of the atmosphere, i.e. the ratio of the moisture in the air to the moisture it would contain if it were saturated at the same temperature and pressure. In the dew point hygrometer a polished… …   The new mediacal dictionary

• psychrometer — [sī kräm′ət ər] n. [ PSYCHRO + METER: orig., thermometer] an instrument with wet and dry bulb thermometers, for measuring moisture in the air …   English World dictionary

• Psychrometrics — or psychrometry are terms used to describe the field of engineering concerned with the determination of physical and thermodynamic properties of gas vapor mixtures. The term derives from the Greek psuchron (ψυχρόν) (… …   Wikipedia

• psychrometer — psychrometric /suy kreuh me trik/, psychrometrical, adj. /suy krom i teuhr/, n. an instrument for determining atmospheric humidity by the reading of two thermometers, the bulb of one being kept moist and ventilated. [1720 30; PSYCHRO + METER] * * …   Universalium

• psychrometer —    1. An instrument used for measuring relative humidity. The simplest sling psychrometers consist of two thermometers mounted on a rotating frame. One thermometer s bulb is kept moist, the other dry. By comparing the wet bulb and dry bulb… …   Lexicon of Cave and Karst Terminology