Electrical conductivity of salt water

[anaoum]

hello,

i am designing an experiment to see the relationship between the electrical conductivity of salt water and the temperature of the salt water.

can some one help me by giving a good and accurate way of measuring the conductivity.

thanks

 

[nvd]

Plating of chemicals means the accumulation of metals (in general) on the plates because of chemical reactions occuring due to the passage of electrons through the salt. D.C flows in one direction so if you use D.C for a longer time, more substance will accumulate on the plates. This porcess also inceases with the increase in current. If you use A.C, current will change direction continuously. One reaction due to the flow of electrons in one direction will be reversed by the flow of electrons in the opposite direction. So the net result will be no accumulation of substance on the plates and no change in the chemistry of the solution.

 

[anaoum]

but how will i measure the conductivity with AC current??

 

[StefB]

but how will i measure the conductivity with AC current??

Ohms law is valid for AC too ;-)

How with DC
http://www.rohmhaas.com/company/plabs.dir/htmldocs/68conduc.html

How with AC
**broken link removed**

Why AC
**broken link removed**

Cell design and some measurements
**broken link removed**

Elaborated device design
http://www.emesystems.com/OL2mhos.htm

 

[anaoum]

How do i measure AC Current??

thanks

 

[mostafa0020]

U can measure it using any of the following
1-Hot wire ammeter.
2-Clamb ammeter.
any one knows any more!!??