psychrometer

(redirected from psychrometers)
Also found in: Dictionary, Thesaurus, Encyclopedia.

psychrometer

 [si-krom´ĕ-ter]
an instrument for measuring the moisture of the atmosphere.

psy·chrom·e·ter

(sī-krom'ĕ-tĕr),
A device for measuring the humidity of the atmosphere by the difference in temperature between two thermometers, the bulb of one kept moist, the other dry. Evaporation from the moist bulb lowers the reading of that thermometer; the greater the difference in readings, the drier the air is; no difference indicates 100% relative humidity.
[psychro- + G. metron, measure]

psychrometer

[sīkrom′ətər]
an instrument for calculating the degree of humidity in the atmosphere by comparing the temperatures of two thermometers, one with a wet bulb, one dry. The difference in temperature between the two thermometers indicates the relative humidity.

psychrometer

an instrument for measuring the moisture of the atmosphere.
References in periodicals archive ?
While the sling psychrometer certainly meets the spirit of the standards, each one of us spins the unit at our own pace--the variability determined by our enthusiasm or lack thereof.
However, for critical temperature and humidity measurements, where the results must be compared against a standard, we use the battery-powered Psychro-Dyne, which has replaced our sling psychrometers.
Wet- and dry-bulb temperatures were measured at 25, 100, and 200 cm above ground level using ventilated psychrometers affixed with cross-calibrated type-t thermocouples.
Predawn leaf water and osmotic potentials were measured 7 wk after salinity treatments were initiated, using thermocouple psychrometers (Tru Psi Water Potential Measurement System, Decagon Devices Inc.
Water potential data were recorded with thermocouple psychrometers (Spanner 1951) at 5, 15, 30, and 60 cm depth and they corresponded to the average of 4 plots of 20 x 20 m (Sala et al.
Leaf water potentials were measured at 1300 h with thermocouple psychrometers on the same position leaf and same dates as CER, gs, and T.
THERMOCOUPLE PSYCHROMETERS are widely used for measuring water potentials of soils and plants.
His work on water potential measurement with thermocouple psychrometers has contributed significantly to plant-water relations.
Each year and at each of the six sampling times, individually calibrated thermocouple psychrometers with an attached leaf punch (J.
Soil water potential was measured weekly at the 45-cm depth using thermocouple psychrometers with results standardized to 25 [degrees] C.
Measurements of water potential ([Psi]) and solute potential ([Psi]s) of the same terminal leaflets of mainstem leaves in the upper canopy were conducted at approximately 0830 h using dewpoint thermocouple psychrometers attached to a Wescor HR 33-T dewpoint microvoltmeter (Beadle et al.
Root water potential was measured using thermocouple psychrometers and a HR-33T dewpoint microvoltmeter (Wescor, Logan.