Salinity sensor!

Hi guys, I have a project and I need measure concentration of salinity in water. I bought a sensor in Japan. It is CDPB-03 sensor. You can search google.com to see it. But I dont sure that it can measure concentration of salinity. SO, if you know some information about it, please give me. Thanks you very much!

P/S: If you know any sensor which can measure concentration of salinity in water and it's circuit. You also give me. Thanks you for everything!

Salinity: http://en.wikipedia.org/wiki/Salinity

That sensor is a conductivity sensor made out of carbon. When there are no other special conductive ingredients in the water, it will work. But I can't find how to connect that specific sensor to the Arduino.

In the past I have taken the carbon rods out of carbon-zinc batteries, to experiment with water and salt and electrolysis. Metals react with a many chemicals, but carbon didn't react with anything.

This is about a sensor that outputs a voltage between 0V and 5V : http://forum.arduino.cc/index.php?topic=63150.0 This thread has a many links to sensors : http://forum.arduino.cc/index.php?topic=114908.0

Sparkfun sell a kit : https://www.sparkfun.com/products/12908 I think you need a circuit like the kit from Sparkfun for accurate results.

Thanks you very much, I'm new about this field. Can you give some experience when processing the signal of this sensor?