Accession Number:

AD0608498

Title:

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

Descriptive Note:

Final rept. for 1 May 61-15 Jul 64,

Corporate Author:

HONEYWELL INC PHILADELPHIA PA

Report Date:

1964-08-15

Pagination or Media Count:

53.0

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

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE