The NBS Two-Pressure Humidity Generator, Mark 2

@inproceedings{Hasegawa1977TheNT,
  title={The NBS Two-Pressure Humidity Generator, Mark 2},
  author={Seiichi Hasegawa and James W. Little},
  year={1977}
}
A new humidity calibration facility which uses the two-pressure principle for generating gas of known humidity has been developed at NBS for calibrating and testing hygrometers. The relative humidity range of the two-pressure humidity generator is 3 to 98 percent for ambient temperatures — 60 ° to 80 °C and test chamber pressures 5 to 200 kPa (absolute). This is equivalent to a nominal dew/frost point range of — 80 ° to 80 °C. Intercomparison tests were made with the NBS standard gravimetric… CONTINUE READING

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