Any used the mCubed Analogue Extension Set - Sensor Hub + flowmeters?

[MrToad]

Flow meter's restriction factor is inversely proportional to the money you pay for it.

Any flow meter that costs less than your entire water cooling setup is going to add a noticeable amount of restriction in exchange for... well... ehm... I will think on something later.

If you REALLY think you actually need one, this one is *reasonably* priced, readily available and not too bad restriction-wise:

http://uk.farnell.com/jsp/search/pro...sp?sku=8544743

Bear in mind there will be some tinkering with resistors, wires and your friend the soldering iron in order to use it for our application.

Steer well clear of any of the options pictured in your post. Do a search of this forum for "flow meter", you will find plenty of discussion about the subject and a link to a "roundup" in a German forum a couple of months ago.

EDIT: BTW, if you haven't bought any of the m-cubed products yet, you may want to have a look on www.keiang.de
I got several things from there (main board, LCD extension, fan extension...) and they're brilliant. Only caveat is, at the moment, in perfect synchrony with my line of thought, you'll find no much Vista love there...