 5230
and 5231 Assmann Psychrometer
Description
The Assmann psychrometer utilizes two precision mercury thermometers with
3-point calibrations. A certificate is provided with each thermometer, giving
the correction required at each point. Corrected accuracy is better than +/-0.1°C.
The double-tube thermometers are supported and protected by a chromeplated
brass case. The thermometer bulbs are guarded by double-walled radiation shields
thermally isolated from the main housing by a plastic bushing. Aspiration
of the bulbs is accomplished by a springwound fan which will provide 8 minutes
of aspiration per winding.
Two models are available
The Model 5230 measures over a range of -30° to 50°C; the thermometer
graduations are 0.2°. The Model 5231 has a range of -20° to 130°F
with graduations of 0.5°. Each instrument is supplied with a wind shield,
a mounting support, a syringe to moisten the wet-bulb wick, extra wicks, psychrometric
tables, and a sturdy carrying case.
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