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The psychrometric chart displays several quantities: dry bulb temperature, dew point temperature, wet bulb temperature, humidity ratio, specific enthalpy, specific volume, relative humidity, and water vapor pressure being the top nine. Also, barometric pressure (or equivalently, altitude) is given.

1. sensible heat is removed (no moisture condenses) 2. sensible heat is added (the humidity ratio and dew point are constant) 3. latent heat is removed (moisture is removed from the air) 4. latent heat is added (moisture is added to the air, but the dry bulb temperature is constant)

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SELF WATERING SYSTEM insures the right humidity ratio of the topsoil even in summer, without having to water every day (depending on the season and type of plant, the water reserve can last up to 7-30 days).

The Kestrel 4200 makes HVAC technicians jobs even easier with automatic wet bulb temperature and humidity ratio readings. Of particular interest to dehumidification professionals, the Kestrel 4200 measures relative humidity, dewpoint, wet bulb temperature and heat stress index as well as the humidity ratio—and the patented dual chamber humidity sensor assures fast and accurate readings in any environment.

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Poggio al Tesoro | In the Via Bolgherese vineyard, a light tilling of the soil keeps the ground cool and aerated, while at Le Sondraie, grass is grown between each row of vines (throughout winter and spring) to inhibit vigour and maintain the best possible temperature/humidity ratio.

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SELF WATERING SYSTEM insures the right humidity ratio of the topsoil even in summer, without having to water every day (depending on the season and type of plant, the water reserve can last up to 7-30 days).

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