Whirling Hygrometer Sling Psychrometer

Wet and Dry Bulb Hygrometer. Relative Humidity is determined by wet & dry bulb thermometers.

Dewpoint and relative humidity can be determined by reference to a Dew Point book or chart.

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Whirling Hygrometer Sling Psychrometer
  • PCWI Whirling Hygrometer
  • PCWI Whirling Hygrometer - End
  • PCWI Whirling Hygrometer - Case

Humidity is determined by wet & dry bulb thermometers.

Operation: Wet the wet bulb, the one with the sock on it, with distilled water, allow it to saturate. Hold by the handle and spin for 15 to 30 seconds, facing any air flow. When the wet bulb reads a constant temperature (may take 2 or 3 or more operations).

Dewpoint and relative humidity can be determined by reference to a Dew Point book or calculator.

The dew point can be determined with the PCWI Dew Point book.

KEEP THE WICK CLEAN, do not allow it to become contaminated by touching it with your fingers.

PCWI Dew Point Book is available as an optional extra.

View FileDatasheet - PCWI Whirling Hygrometer Sling Psychrometer    Size: (151.73 KB)

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Specifications

Range -5°C to +50°C
Accuracy ±2% RH dependent on temperature and wet bulb reading.

Certification

Certified at Nominally 0°C and 20°C, or Nominally °C, 20°C & 30°C

Calibration is done by comparison to a Certified (NATA Endorsed Report) test thermometer and sensor in accordance with PCWI Reference Document LWI 26.

Uncertainty of Measurement: ±0.25°C

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