Accession Number : AD0729774

Title :   A Manually Operated Dew- or Frost-Point Hygrometer System Using CO2 Coolant.

Descriptive Note : Memorandum rept.,

Corporate Author : BALLISTIC RESEARCH LABS ABERDEEN PROVING GROUND MD

Personal Author(s) : Patchell,James R.

Report Date : JUL 1971

Pagination or Media Count : 31

Abstract : A simple, inexpensive, manually operated dew- or frost-point hygrometer has been designed, fabricated and installed in a system that functions at atmospheric pressure and vacuum. It is intended primarily for the detection of water vapor pressure in a confined space at vacuum, as encountered in free-flight aerophysics ranges. Illustrations, with dimensions of the hygrometer's component parts, are presented. Calibration and operation procedures are described and the results of the test are reported. (Author)

Descriptors :   (*HYGROMETERS, PERFORMANCE(ENGINEERING)), AERONAUTICAL LABORATORIES, DEW POINT, GAS FLOW, VACUUM, CARBON DIOXIDE, DEPOSITION, TEST METHODS, VAPOR PRESSURE, WATER VAPOR, FREE FLIGHT MODELS

Subject Categories : Meteorology
      Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE