Capacitive displacement sensor: Difference between revisions

Content deleted Content added
Basic capacitive theory: Clarify paragraph & expand
Line 42:
==Comparison to eddy current displacement sensors==
Capacitive displacement sensors share many similarities to [[eddy current]] (or inductive) displacement sensors; however capacitive sensors use an [[electric field]] as opposed to the [[magnetic field]] used by eddy current sensors <ref name="CapVEddy">[http://www.lionprecision.com/tech-library/technotes/tech-flash/cve/f-article-0011-cve.html Lion Precision Capacitive Eddy Current Comparison], A comparison between capacitive and eddy current sensing technology from Lion Precision.</ref><ref name="Siemens">[http://www.tech-pedia.com/Electrical_Engineering/Circuit%20Components/proximity%20sensors/capacitive/snrs_3.pdf Users Manual for Siemens Capacitive Sensors p.54]</ref> This leads to a variety of differences between the two sensing technologies, with the most notable differences being that capacitive sensors are generally capable of higher resolution measurements, and eddy current sensors work in dirty environments while capacitive sensors do not.<ref name="CapVEddy"/>
 
==Other non-displacement capacitive sensing applications==
* Testing the moisture content of grain.
* Soil moisture.
* Humidity.
* Detecting water content in fuels.
 
==See also==