THE INFLUENCE OF ASPIRATED PSYCHROMETER ON CALIBRATION PROCESS |
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| Domen Hudoklin, Jovan Bojkovski, Janko Drnovšek |
- Abstract:
- In the proposed paper the influence of motor aspirated psychrometer on calibration process is investigated. Proper humidity measurement with psychrometer requires sample gas stream of sufficient velocity in order to achieve accurate measurements. For this reason modern psychrometer typically have integrated aspiration motor to assure such gas stream over the thermometer, which is enclosed by a wet wick (wet thermometer). The wick has to be maintained in a wet condition, which causes evaporation and consequently the unwanted humidification of the air being measured, especially in a closed humidity chamber or humidity generator. Different psychrometers were tested in a humidity test chamber in order to estimate the level of such humidification. The results are summarised in the paper. In addition, special considerations are addressed regarding the calibration of motor aspirated psychrometer in closed calibration environment.
- Keywords:
- psychrometer, humidity, calibration
- Download:
- PWC-2003-TC12-025.pdf
- DOI:
- -
- Event details
- Event name:
- XVII IMEKO World Congress
- Title:
Metrology in the 3rd Millennium
- Place:
- Dubrovnik, CROATIA
- Time:
- 22 June 2003 - 28 June 2003