Psychro-Dyne Battery Operated Psychrometer
The Psychro-Dyne is a completely portable instrument which indicates wet and dry bulb
temperatures for relative humidity and dew point measurements.
The Psychro-Dyne requires no whirling or special techniques and may operate in confined areas. The operator is only required to wet the wick on the wet bulb, turn the instrument on, and allow the constant aspiration rate to cause the depression in wet bulb temperature.
Directions for use: Turn on the fan and let it run for 1 1/2 to 2 minutes. Subtract wet bulb reading from dry bulb reading. Use the included slide rule and tables to calculate the RH. Fan is powered by three size D batteries (order separately).
This operation, when compared to the conventional sling psychrometers, affords a safer, convenient, and more accurate method of RH determination. Night-time and dark space readings are provided by increasing the intensity of the illuminating thermometer scale. The high thermometers' breakage rate of the sling psychrometers is also eliminated in the Psychro-Dyne since the thermometers are shock mounted.
||0 to 140°F for relative humidity and dewpoint determination|
||1-1/2 to 2 minutes|
°F range: 0 to 120°F (matched within 1/2°)
°C range: -15 to 45°C
||±0.3°F (±0.2°C) over entire range|
||+20 to 120°F (-10 to 60°C)|
||1000 operations with three standard "D" cells|
|Current no load
||4.5V, direct current, permanent magnet|
|Including carrying case less batteries