Accession Number : AD0760810

Title :   Instruction Manual for Expendable Dew Point Hygrometer.

Descriptive Note : Final rept. Dec 69-Jan 71,

Corporate Author : EG AND G INTERNATIONAL INC WALTHAM MASS ENVIRONMENTAL EQUIPMENT DIV

Report Date : JAN 1971

Pagination or Media Count : 55

Abstract : The Expendable Dew Point Hygrometer is a lightweight, battery powered, automatic dew point hygrometer developed for tropospheric balloon soundings. It is designed to be used in conjunction with a radiosonde in gathering meteorological data. The measurement of dew point temperature is accomplished by a thermistor mounted in a dew point sensor which senses temperature as a resistance and provides a signal to the radiosonde. The radiosonde is a balloon-borne, battery powered, meteorological instrument that automatically transmits radio signals relating to the atmosphere pressure, air temperature and dew point temperature of the upper air to ground receiving equipment. (Author)

Descriptors :   (*HYGROMETERS, INSTRUCTION MANUALS), (*ATMOSPHERIC SOUNDING, DEW POINT), TROPOSPHERE, METEOROLOGICAL BALLOONS, RADIOSONDES, ATMOSPHERIC TEMPERATURE, BAROMETRIC PRESSURE, THERMISTORS, DETECTORS, TRANSMITTER RECEIVERS, AUTOMATIC

Subject Categories : Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE