Accession Number : ADA113240

Title :   Frequency Response Measurements on Lyman-Alpha Humidiometers.

Descriptive Note : Technical memo.,

Corporate Author : NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION BOULDER CO WAVE PROPAGATION LAB

Personal Author(s) : Priestley,J T ; Cartwright,W D

PDF Url : ADA113240

Report Date : Feb 1982

Pagination or Media Count : 16

Abstract : The primary instrument used for measuring high-frequency humidity fluctuations is the Lyman-alpha humidiometer; yet, there is virtually no published data on its frequency response. Attempting to fill this void, both amplitude and phase measurements were made on several such instruments. These measurements showed frequency responses (amplitude 3 dB down) ranging from approximately 160 to 800 Hz. Measurements of a specially modified unit showed no fundamental frequency limitation up to at least 10 kHz. (Author)

Descriptors :   *Humidity, *Measuring instruments, Frequency response, Dynamic response, test and evaluation

Subject Categories : Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE