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post #11 of 16
I would go to local electronics hobby store, and buy a thermistor, then wire it up to a temp monitor like the CompuNurse. You can then work it into your system a number of ways.... You can put it by the CPU die, or you could, if you have the cajones, try insulating the thermistor with something waterproof....then put a hole into your tubing, shove it in, then seal it with silicone.
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post #12 of 16
Quote:
Originally Posted by Tezzanator
drill a hole in tube and pokea sensor rod in then seal it with bathroom sealant?
I was thinking more like just waterproof the sensor end on one of those thermistors (those flat sensors on the end of a wire) and run it right down through the open end of your T-line, just dangle it there....
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post #13 of 16
Quote:
Originally Posted by Goldenpi
I adapted a standard internal/external digital thermometer. Waterproofed the probe and just placed it in my reservoir. Its measuring the temp after the series of blocks, as well as room ambient.

It says 31.1.
This is probably the best idea, you can pick these up at most hardware stores for $15. or less and they are waterproof because they are made for outside use.
I have a 1 gallon external reservoir and I just drop an aquarium thermometer in there.
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post #14 of 16
Assuming that what a couple of members here are pushing RE water temp, it will not make a difference where you place your temperature sensors because the water in the loop reaches equilibrium after a while. I don't know whether this is true or not, but it's a theory with a lot of ground in thermodynamics.
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post #15 of 16
It depends on flow-rate. Under ideal conditions, the hotest and coldest points of a loop should have almost no temperature difference. But the slower the flow, the greater the difference becomes.
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post #16 of 16
Quote:
Originally Posted by Goldenpi
It depends on flow-rate. Under ideal conditions, the hotest and coldest points of a loop should have almost no temperature difference. But the slower the flow, the greater the difference becomes.
Exactamundo -- [Shatner Voice] the question is, how much? [/Shatner Voice]

There is a detailed mathematical proof circulating (pun intended ), but I believe the gist of it is that water requires a lot of energy to change temperature--a watched pot never boils, climates near water have slower and smaller temperature swings, etc.--so the amount of temperature change required by the moving tube of water through your CPU to transport its heat away is surpisingly low.

Here's an easy test--run your CPU up to full load, let temps stabilize, and touch the tubes going in and out of your waterblock. When I did it, I couldn't tell a temperature difference, but maybe I'm just insensitive.

That's quite contrary to the image I have in my mind of hot water coming out of the waterblock, and cool water from the radiator. Actually, if you think about it, it points to where the current bottleneck in ambient cooling really is...

Hint--it's more obvious in air cooling.
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