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Description: The method specified applies for temperatures within the range from 5 to 80 °C. The property is determined with an uncertainty either not exceeding 3 % r. h. or not exceeding 3 % r. h., depending on the uncertainty in the value obtained for the wet-bulb temperature depression and on whether or not
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Supplier: ASTM International
Description: % confidence level. 1.2 Method A-Psychrometer Ventilated by Aspiration: 1.2.1 This method incorporates the psychrometer ventilated by aspiration. The aspirated psychrometer is more accurate than the sling (whirling) psychrometer (see Method B), and it offers
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Supplier: ASTM International
Description: level. 1.2 Method A- Psychrometer Ventilated by Aspiration: 1.2.1 This method incorporates the psychrometer ventilated by aspiration. The aspirated psychrometer is more accurate than the sling (whirling) psychrometer (see Method B), and it offers advantages in
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Supplier: ASTM International
Description: . 1.2 Method A - Psychrometer Ventilated by Aspiration: 1.2.1 This method incorporates the psychrometer ventilated by aspiration. The aspirated psychrometer is more accurate than the sling (whirling) psychrometer (see Method B), and it offers advantages in regard
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Supplier: ASTM International
Description: uncertainties are at the 95 % confidence level. 1.2 Method A-Psychrometer Ventilated by Aspiration: 1.2.1 This method incorporates the psychrometer ventilated by aspiration. The aspirated psychrometer is more accurate than the sling (whirling) psychrometer (see
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Supplier: AENOR
Description: ATMOSPHERES FOR CONDITIONING AND TESTING. DETERMINATION OF RELATIVE HUMIDITY. PART 1: ASPIRATED PSYCHROMETER METHOD.
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Calibration of Psychrometers at Spring Singapore
Abstract To assess the uniformity of the psychrometer coefficient of psychrometers commercially available in the market, results of calibrations of aspirated psychrome- ters and whirling (or sling) psychrometers performed by our laboratory at about 23◦C and55%rhoveraperiodofsixyearsareanalyzed.Itisfoundthatalthoughthepsychro- meter coefficient of a particular …
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Federal Register > Friday, July 31, 2015 > [80 FR 45802] Energy Conservation Program: Test Procedures for Dehumidifiers
DOE maintained the original proposal from the May 2014 NOPR to use an aspirating psychrometer to measure inlet air relative humidity for portable and refrigerant-only whole-home dehumidifiers.
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Federal Register > Wednesday, February 4, 2015 > [80 FR 5994] Energy Conservation Program: Test Procedures for Dehumidifiers
… measure the water vapor content in the air: (1) a cooled surface condensation hygrometer that measures dew-point temperature, which can be used in conjunction with dry-bulb temperature to determine relative humidity; and (2) an aspirating psychrometer that measures wet-bulb …
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Federal Register > Wednesday, May 21, 2014 > [79 FR 29272] Energy Conservation Program: Test Procedures for Dehumidifiers
For calculating relative humidity, DOE considered: (1) A cooled surface condensation hygrometer that measures dew-point temperature, which can be used in conjunction with dry-bulb temperature to determine relative humidity; and (2) an aspirating psychrometer that measures wet-bulb temperature.