The theory behind capacitance sensors

[Nicol新 Cristian Salda浾 Ojeda]

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Hi, dear SOWACS

I叮 Nicol新 Salda浾. In this moment I have done my tesis which is about the
sensor capacitive used in the agricultura (type FDR).
I talk you because I need help for get material theoric.
So, I don另 know if you could help me.
If you answer is yes, you will help me in the following:
Theoric, design of the sensor capacitive and the infuency of the dielectric
constant. The sensor isn另 family of the TDR. This type of sensor are
calling FDR (frequency domain reflectometry).
The relatioshipt about the calibration of the sensor.
I don另 know if you understand. I叮 giving you help please.
If you don另 have something clean you will write soon.

I叮 agredecered for your undestanding

Also, I like sending the email of Johan Smit.

Greetings to all,

Nicol新 Cristian Salda浾 Ojeda

PD: my email is : n_saldana@hotmail.com

[Bruce comments:
I am sure you have seen the sowacs page
www.sowacs.com\sensors\capacitance.html
from where you must have found Johan Smit's comments on the page
www.sowacs.com\sensors\whatistdrfdr.html

Using the sowacs search I found several mentions of Johan's email address
such as http://www.sowacs.com/archives/01-11/msg00001.html

PS I have subscribed you to the list so taht you may recieve any replies
sent to the group.
Bruce]