What's the difference between hygrometer and psychrometer?

Hygrometer


Definition:

  • (n.) An instrument for measuring the degree of moisture of the atmosphere.

Example Sentences:

  • (1) The fiber-dimensional hygrometer yielded mean aw values and precision estimates that did not differ significantly from those obtained with the electrical hygrometers for (NH4)2SO4slush, KNO3 slush, sweetened condensed milk, pancake syrup, and cheese spread.
  • (2) The calibration responses for another electrical hygrometer (Hygrodynamics) were nonlinear.
  • (3) Then the hair hygrometer is no longer capable of reacting sufficiently to the fluctuation of the relative humidity of the bath.
  • (4) It consists of a special cylindrical casing into which the sensor of a hair hygrometer has been introduced.
  • (5) However, the mean aw value for a soy sauce was 0.838 for the electrical hygrometers compared with 0.911 for the fiber-dimensional hygrometer.
  • (6) The fiber-dimensional hygrometer was affected by a volatile component(s) in the soy sauce that caused an erroneously high aw value.
  • (7) Average absolute percent difference between predicted and assigned aw values for the linear model ranged from 0.3 to 0.7% for a fiber-dimensional hygrometer (Abbeon) and 3 electrical hygrometers (Beckman, Rotronics, and Weather Measure).
  • (8) For each of the most commonly used humidifiers inspired gas humidity was measured under routine clinical conditions with an electronic hygrometer.
  • (9) Proximal airway humidity was measured during mechanical ventilation in 14 infants using an electronic hygrometer.
  • (10) The hair hygrometer has to be protected inside the device casing against a contamination by the bath or the condensing drycleaning solvent.
  • (11) Using a precision thermocouple hygrometer, requiring just 5 microliters of sample, the tear osmotic pressures of 6 subjects were monitored throughout their adaptation to rigid contact lenses.
  • (12) On the basis of the experimental results obtained instructions are given for the employment of hair hygrometers in drycleaning and for the design of the device casing: 1.
  • (13) Provided that the technical requirements are met, hair hygrometers may also be considered as reliable measuring instruments in the practice of drycleaning.
  • (14) It could be observed that a malfunction of the hair hygrometer mainly occurred when the hairs fixed in the sensor were moistened by the drycleaning bath or by the drycleaning solvent (perchloroethylene), respectively.
  • (15) This paper presents the procedures and equations to be utilized for measurement of evaporative water loss (mw), by use of the dew-point hygrometer, in small animals exposed to air containing water vapor in an open-flow system.
  • (16) During the whole night, 2 local sweating rates on the right and the left sides of the upper chest were continuously recorded from 12 cm2 area capsules using a dew-point hygrometer technique, while applying local thermal clamps, a constant 2 degrees C difference in local skin temperatures being imposed between the two symmetrical skin areas.
  • (17) A ventilated hygrometer system has been used to study the evaporative water loss (EWL) from the excised wound of rats with and without these dressings.
  • (18) Pooled estimates of reproducibility (Sx) in the 3 studies were 0.008 for the fiber-dimensional hygrometer and 0.010 for the electrical hygrometers; these values were not significantly different from those reported in the study that verified the current official AOAC method.
  • (19) In the studies published and discussed in the present paper, the causes for the malfunction of the hair hygrometer, in the device mentioned were determined.
  • (20) The aim of this study was to compare the variation of electrometric data generated by 4 different instruments (Skicon Hygrometer, 2 CM420 and a CM820 corneometer) in normal and experimentally damaged skin displaying surface roughness.

Psychrometer


Definition:

  • (n.) An instrument for measuring the tension of the aqueous vapor in the atmosphere, being essentially a wet and dry bulb hygrometer.

Example Sentences:

  • (1) This paper describes the production and calibration of a miniature psychrometer treated with a specially developed porous coating.
  • (2) With the help of a psychrometer-normogramme the absolute humidity is determined from the data of the wet and both the dry thermometers.
  • (3) Procedures that would decrease this discrepancy even further were pinpointed, and advantages of using the miniature psychrometer were assessed.
  • (4) A precision humidity generator was developed for calibrating the psychrometer.
  • (5) Maximum difference between minihygrometer and August's psychrometer parameters reaches 0.5%.
  • (6) Existing psychrometers of small dimensions cannot provide accurate long-term measurements of water-vapor pressure without frequent maintenance and recalibration.

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