Dwyer A-525 – Pocket Type Sling Psychrometer

• Used to measure relative humidity by measuring the dry bulb and wet bulb temperatures
• Eliminates the need to use graphs to determine the humidity

The Model A-525 Sling Psychrometer can be used to measure relative humidity by measuring the dry bulb and wet bulb temperatures. Wet-bulb temperatures are measured by wetting a wick with distilled water on one of the thermometer legs of the psychrometer. On the other leg, the dry bulb temperature is measured. An included slide chart eliminates the need to use graphs to determine the humidity. Replacement wicks are available as an accessory.