The Hygrometer Dry & Wet Bulb from AGN Enterprises is a traditional meteorological and laboratory instrument designed for determining the relative humidity of the surrounding air by comparing dry-bulb and wet-bulb temperature readings.
The instrument incorporates two thermometers mounted side by side. One measures the normal air temperature as the dry bulb, while the second operates as a wet bulb with its sensing bulb kept moist during measurement. The temperature difference between the two readings can be used with an appropriate psychrometric table or chart to determine relative humidity.
It is suitable for meteorological laboratories, schools, colleges, universities, geography laboratories, environmental science departments, agricultural laboratories, research institutions, and educational demonstrations.
The Hygrometer Dry & Wet Bulb operates on the principle of evaporative cooling.
When the wet-bulb wick is adequately moistened, evaporation cools the wet-bulb thermometer. The difference between the dry-bulb and wet-bulb readings is known as the wet-bulb depression.
In general, a larger difference indicates drier air, while a smaller difference indicates higher humidity under comparable measurement conditions.
The Hygrometer Dry & Wet Bulb is suitable for:
The instrument provides a clear hands-on demonstration of the relationship between temperature and atmospheric humidity.
Students can compare dry- and wet-bulb readings, calculate wet-bulb depression, and use psychrometric data to estimate relative humidity.
It is particularly useful for teaching meteorology, climatology, geography, environmental science, agriculture, and basic physics.
Note: Exact temperature range, scale graduation, dimensions, construction, and mounting configuration should be confirmed for the specific model before purchase.
AGN Enterprises supplies laboratory instruments and scientific equipment for educational, research, and institutional applications. The Dry & Wet Bulb Hygrometer is a practical instrument for humidity measurement and temperature-related laboratory studies.
