MICROWAVE ACOUSTIC SENSING OF WATER IN HYDROCARBON WATER SOLUTIONS

Authors
RAIKKONEN H OKSANEN M
Citation
H. Raikkonen et M. Oksanen, MICROWAVE ACOUSTIC SENSING OF WATER IN HYDROCARBON WATER SOLUTIONS, Sensors and actuators. A, Physical, 45(2), 1994, pp. 99-101
Citations number
4
Categorie Soggetti
Engineering, Eletrical & Electronic","Instument & Instrumentation
Journal title
Sensors and actuators. A, Physical → ACNP
ISSN journal
09244247
Volume
45
Issue
2
Year of publication
1994
Pages
99 - 101
Database
ISI
SICI code
0924-4247(1994)45:2<99:MASOWI>2.0.ZU;2-0
Abstract
Microwave absorption in and the consequent heating of a mixture of two fluids is used to detect the water content in liquid hydrocarbon thro ugh observing the acoustic emission amplitude induced by the thermal e xpansion. The applied microwave field is audio-frequency amplitude mod ulated. An open impedance matched 2 GHz micro stripline detector has b een developed. The method is able to detect less than 3% water concent rations in ethanol in a simple laboratory set-up.