Measuring free chlorine in water?

Question

I am trying to set up a water bath experiment with constant 5ppm free chlorine. I have the means of controlling the chlorine level but I need real time monitoring of the chlorine. The monitoring system needs to output the reading to a computer/data acquisition board. The simpler the better, and money is not an issue.
I've done some research and found some options, but any advice would be greatly appreciated.

Answer 1

Check out any of the commercially available free chlorine electrode kits. You would need an analog to digital interface to use in any computerized system