Hygrometer, Whirling

Rapid Stabilization: The rotating action ensures maximum airflow over the wet-bulb wick, providing a stabilized reading significantly faster than stationary wet-and-dry bulb models.

Foldable Anti-Slip Handle: Features a heavy-duty, ergonomic handle that folds for compact storage and protects the thermometers when not in use.

₹399.00

The Stemaids Whirling Hygrometer, also known as a Sling Psychrometer, is a precision manual instrument used to measure relative humidity (%RH) and dew point through the process of evaporative cooling. It is the preferred tool for field engineers, meteorologists, and HVAC specialists who require a rapid and accurate humidity reading without waiting for the slow stabilization times of stationary analog hygrometers. The device consists of two matched spirit-filled thermometers mounted on a robust frame that is connected to a handle by a swivel joint. By “whirling” or spinning the instrument in the air, a constant airflow is created over the thermometer bulbs, allowing for a stabilized reading in less than 60 seconds.