Definition

1. Noun:
   • A hygrometer consisting of a dry-bulb thermometer and a wet-bulb thermometer; their difference indicates the dryness of the surrounding air: A psychrometer is a scientific instrument used to measure atmospheric humidity by comparing the temperatures recorded by two thermometers, one with a dry bulb and one with a wet bulb.

Usage

• The word psychrometer is a technical, uncountable noun used primarily in meteorology, physics, and engineering contexts to refer to a specific type of measuring device.
• It is typically used with articles like "a" or "the" (e.g., , ).

Examples

• Noun:
  • The meteorologist used a psychrometer to determine the relative humidity.
  • A sling psychrometer is whirled around to ventilate the wet bulb.
  • Readings from the psychrometer are used to calculate the dew point.

Advanced Usage

• "Sling psychrometer": A specific type of psychrometer mounted on a handle or chain so it can be swung through the air.
  • For accurate field measurements, a sling psychrometer is often preferred.
• "Aspirated psychrometer": A psychrometer where a fan draws air over the thermometer bulbs.
  • The aspirated psychrometer provides more consistent readings by ensuring adequate airflow.

Variants and Related Words

• Psychrometric (adj): Relating to the measurement or study of the thermodynamic properties of gas-vapor mixtures.
  • Psychrometric charts are essential tools for HVAC engineers.
• Hygrometer (n): A general term for any instrument that measures humidity. A psychrometer is a type of hygrometer.
  • While all psychrometers are hygrometers, not all hygrometers are psychrometers.

Synonyms

• Wet-and-dry-bulb thermometer: A more descriptive, non-technical synonym for a psychrometer.
• Hygrometer (general term): An instrument for measuring humidity.

Related Terms and Concepts

• Dry-bulb temperature: The temperature of air measured by a thermometer freely exposed to the air but shielded from radiation and moisture.
• Wet-bulb temperature: The lowest temperature to which air can be cooled by the evaporation of water into it at constant pressure.
• Relative humidity: The amount of water vapor present in air expressed as a percentage of the amount needed for saturation at the same temperature.

Noun

1. a hygrometer consisting of a dry-bulb thermometer and a wet-bulb thermometer; their difference indicates the dryness of the surrounding air