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Originally Posted by Gooserider
Just as a counter argument, do you really want to shut down the PC because the pump quit? Isn't the key issue that something is getting to hot? (like a CPU?) If so, why the concern with detecting pump problems? Wouldn't it be sufficient and more appropriate to look for CPU over heating? Figure out the maximum temp you should expect with a full load, then add 5-10*C and set up something to start a shutdown if the temp hits that point. Gooserider
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That's exactly what I do on my 226W pelt + WC system, using MBM (Mother Board Monitor) and a little program called ShutDown Now. In my (particular) case, as soon as the CPU temperature hits +33C something really wrong has happened, and MBM is set to initiate a shutdown. Normal CPU temps for my "peltierized" computer should always be in the range 8C min to 28C max when overloaded.
I would be nice though to have some sort of flow data, although the ones I have seen so far are too restrictive.