A non-contact capacitance type level transducer for liquid characterization
The liquid properties such as buoyancy, pressure at a depth, relative electrical permittivity, electrical conductivity, thermal conductivity, absorption of radiation, liquid surface reflection of sound or light waves, are used to design the different types of liquid level transducers for l...
| Main Authors: | , , , , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
2008
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/5798/ http://irep.iium.edu.my/5798/ http://irep.iium.edu.my/5798/ http://irep.iium.edu.my/5798/1/04580808.pdf |
| Summary: | The liquid properties such as buoyancy, pressure at
a depth, relative electrical permittivity, electrical
conductivity, thermal conductivity, absorption of
radiation, liquid surface reflection of sound or light
waves, are used to design the different types of liquid
level transducers for liquid level measurement in any
process industry. The contact-type level-sensing
transducers have the disadvantage that their
characteristic properties may change due to physical
or chemical reaction between the liquid and the
probing material, and hence may affect accuracy
besides their life time.
The non-contact-type level-sensing probes may
have longer life period, but they are comparatively
costly and require various environmental and
experimental precautionary measures when being
used.
In this paper, a low-cost non-contact capacitance
type liquid level measuring technique has been
designed and used for liquid identification objectives.
The results obtained are very much consistent with the
theoretical derivations. |
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