Good personal'm developing a project where I will use these three sensors (links below) Current measurement wonder if they may have already worked with them or someone similar and know how programming in arduino our friend.
Personally, I tried to avoid anything made by Honeywell if there are alternatives. Their concept of datasheet is not "industry standard"... in fact, you end up saying... "what datasheet? I can't find a datasheet."
Here is a discussion that may help you figure out how this current transformer can work with arduino. http://electronics.stackexchange.com/questions/23591/ac-current-sensor (http://electronics.stackexchange.com/questions/23591/ac-current-sensor)