Accession Number : AD0734859

Title :   An Automated Earth Temperature Station (Instrumentation).

Descriptive Note : Final rept.,

Corporate Author : NATIONAL BUREAU OF STANDARDS WASHINGTON D C

Personal Author(s) : Kusuda,T. ; Powell,F. J.

Report Date : 01 JUN 1970

Pagination or Media Count : 114

Abstract : In order to improve heat transfer information needed for underground installations, the Environmental Engineering Section of the National Bureau of Standards has collected hourly earth temperature data for about a year at its site in Gaithersburg, Maryland. Hourly measurements of earth temperatures at selected depths, ground surface heat flux, soil moisture content, ambient air temperature and relative humidity, solar radiation, wind speed and direction, and rainfall were collected using an automatic data acquisition system. The report describes, in detail, the instrumentation system used. (Author)

Descriptors :   (*DATA TRANSMISSION SYSTEMS, *INSTRUMENTATION), (*TEMPERATURE, MEASUREMENT), UNDERGROUND, TEMPERATURE SENSITIVE ELEMENTS, TRANSDUCERS, THERMAL RADIATION, ERRORS, PERIODIC VARIATIONS

Subject Categories : Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE