How to: soil moisture measurement with WaterMark?

I am new with Arduino, and i cant find documentation about how to connect Arduino with Watermark successfully.

I would like to connect my Arduino UNO with a watermark like this:

http://guideimg.alibaba.com/images/shop/72/08/19/4/watermark-soil-moisture-sensor-w-15-cable_3234944.jpg

Does anyone know any schema or documentation about how to do it? Have anyone tried it before?

I have found this: https://oceancontrols.com.au/datasheet/davis/ECS-014_07395-158_IM_06440_6470.pdf

but still not clear how to do it in Arduino.

Thanks you for your time.

You could get an SMX signal conditioner: http://emesystems.com/pdfs/SMX.pdf

Or you could use this project as a model:

I'm surprised you didn't find those with Google.

johnwasser:
You could get an SMX signal conditioner: http://emesystems.com/pdfs/SMX.pdf

Or you could use this project as a model:
http://vanderleevineyard.com/1/post/2012/08/-the-vinduino-project-3-make-a-low-cost-soil-moisture-sensor-reader.html

I'm surprised you didn't find those with Google.

I found in google, but was looking for another approach, thanks you for the answer and for your time. I will use the SMX signal conditioner.

Regards.

Hello fortesgallego.

Are you still around since 2015?
Could sahre your experience about connecting the SMX to the Arduino?
Which SMX option did choose?
Frequence output, Voltage output or current output?

That would help if you can share.

Thank a lot