225-520-A Pocket Sling Psychrometer
225-570-A Sling Psychrometer

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| 225-520-A Pocket Sling Psychrometer |
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| 225-570-A Sling Psychrometer |
The Model 225-520-A Pocket Sling Psychrometer is only 7.5" in overall length and comes with a convenient pocket-size carrying case. The two 5.5" red liquid filled thermometers are attached to an aluminum back with a handle for whirling. The handle folds down when not in use. Instrument range is either +20° to +110°F or -5° to +45°C. Humidity tables are provided. Replacement wicks are available.
The Model 225-570-A Sling Psychrometer is a standard sling psychrometer meeting U.S. National Weather Service recommendations. It consists of two 9.5" red liquid filled thermometers mounted on a stainless steel back. The wet bulb thermometer has a muslin wick covering the bulb. A wooden swivel handle with a chain for whirling is attached to the thermometer back. The Model 225-570 Sling Psychrometer has a range of -20° to +120°F; the range of the Model 225-571 is -30° to +50°C. Humidity tables are provided with each instrument. Replacement wicks are available.
Specifications
225-520
Range:
225-520: +20° to +110°F (1° graduations)
225-521: -5° to +45°C (1° graduations)
Size: 7.5" L x 1" W (190 mm x 25 mm)
Weight/shipping: 0.3 lb/1 lb (0.1 kg/0.5 kg)
225-570
Range:
225-570: -20° to +120°F (1° graduations)
225-571: -30° to +50°C (0.5° graduations)
Size: 12" L x 1.5" W (305 mm x 38 mm)
Weight/shipping: 0.4 lb/1 lb (0.2 kg/0.5 kg)
Rejoining Separated Columns
Ordering Information
Note: Limited quantities of the mercury-filled thermometers are available. Please call for information.
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