Frequency response of cold wires used for atmospheric turbulence measurements in the marine environment
- 1 November 1979
- journal article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 50 (11) , 1463-1466
- https://doi.org/10.1063/1.1135741
Abstract
We have examined the frequency response of cold-wire thermometers using 2.5-micro platinum wires with laboratory-produced salt layers. The salt layers are produced by exposure to a saline aerosol to simulate the marine environment. The frequency response was determined by measuring the response of the coated wires to a white thermal noise air flow produced by a heated wire in an airstream. The wires exhibit a relaxation behavior, with the rolloff frequency varying as the square of the total wire plus salt radius. The results show that the frequency response of the salted wires is controlled by the laminar-air-film boundary layer.Keywords
This publication has 3 references indexed in Scilit:
- Producing small scale temperature fluctuations in an airstreamReview of Scientific Instruments, 1978
- Humidity Sensitivity of Atmospheric Temperature Sensors by Salt ContaminationJournal of Physical Oceanography, 1978
- Frequency response of hot wires used for atmospheric turbulence measurements in the marine environmentReview of Scientific Instruments, 1977