ALPHA RADIATION HYGROMETER. VOLUME I. AUTOMATIC FROST-POINT HYGROMETER FOR STRATOSPHERIC WATER-VAPOR MEASUREMENTS.

Abstract

This report describes a new type of automatic frostpoint hygrometer for measurement of the atmospheric distribution of water vapor. The mass of the frost deposit on a cooled surface is detected directly by energy attenuation of alpha radiation. An automatic control maintains a constant amount of this frost by controlling the direction of current flow through a thermoelectric cooler. The instrumentation of this hygrometer is described in some detail, and balloon-flight tests of prototype units are presented. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 15, 1964
Accession Number
AD0608498

Entities

People

  • J. E. Crowley
  • J. G. Ballinger
  • L. Kirvida
  • M. P. Fricke

Organizations

  • Honeywell International, Inc.

Tags

DTIC Thesaurus Topics

  • Attenuation
  • Automatic
  • Hygrometers
  • Instrumentation
  • Measurement
  • Measuring Instruments
  • Prototypes
  • Radiation
  • Vapors
  • Water Vapor

Fields of Study

  • Environmental science

Readers

  • Aerospace Test and Evaluation
  • Climatology
  • Electrical Engineering

Technology Areas

  • Space