| 摘要 |
An air property measurement apparatus comprising a probe and controller. The probe houses a plurality of filters, a temperature sensor, a heating element, and an integrated temperature and relative humidity sensor. In one embodiment, air that enters the probe flows through the temperature sensor, heating element, and integrated temperature and relative humidity sensor, then exits through at least one of the plurality of filters. The controller-determines the air/gas property relationships, allows input of actual ambient pressure and/or atmospheric pressure values, and ascertains the dew point using temperature and relative humidity values as measured by the integrated sensor. Air property values are based on the dew point and temperature as measured by the temperature sensor. The apparatus is suitable for but not limited to relative humidity measurements as well as industrial applications where high humidity conditions exist. In HVAC applications the apparatus provides improved economizer and cooling tower control.
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