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1/2" Flow Sensor do they exist?

K

kleox64

[H]ard|Gawd
Joined
Sep 21, 2004
Messages
1,467
Cant seem to find any of these, the only solution seems to be the aquacomputer one with G1/4 threads. Assuming I use this in a 3/8 or 1/2" system at the end of the cooling loop will I see a big performance drop in flowrate. I mean whats the alternative if the pump fails?, ok the cpu will get hot and the system will shutdown but what about the rest of the loop? those 7800's will boil the water?

kleo
 
If you set the BIOS to shut down at lets just say 70°C you're not going to have to worry about it. If the pump fails the CPU will reach the critical temperature pretty quickly and shut down the entire rig (GPUs and all). If you're getting good temps on the core set the critical temp to 60°C (many BIOS have 60° as the lowest power off temp) and you've effectively created a failsafe in event of a pump failure.

As for boiling water... water (without antifreeze) boils at 100°C... you've got bigger problems than boiling water to worry about if your GPUs are hitting 100°C.

I've never seen 1/2" electronic flow sensors... just the little spinners that you can visually see the flow.
 
Here you go. http://www.swissflow.com/html/index.htm

BellaCroix said:
If you set the BIOS to shut down at lets just say 70°C you're not going to have to worry about it. If the pump fails the CPU will reach the critical temperature pretty quickly and shut down the entire rig (GPUs and all). If you're getting good temps on the core set the critical temp to 60°C (many BIOS have 60° as the lowest power off temp) and you've effectively created a failsafe in event of a pump failure.

As for boiling water... water (without antifreeze) boils at 100°C... you've got bigger problems than boiling water to worry about if your GPUs are hitting 100°C.

I've never seen 1/2" electronic flow sensors... just the little spinners that you can visually see the flow.
Click to expand...
 
The system won't overheat just sitting there since it will be idle. It would probably overheat when you started using it, at which time you should notice a difference in pump sound.
 
Innovatek makes a flow sensor that comes with 1/4 BSPP threads on it so you should be able to do a 1/2" tube without to much difficulty. It is designed to be mated to the Fan-O-Matic device, but they also can be hooked up to the Aqua Computer Aquaero.
 
cant see anything about the threads, will take a look.
This is definetly better than the other flow sensors that do a 360 degree turn (I dont think thats good on flow rate is it :) )
 
thewhiteguy said:
The system won't overheat just sitting there since it will be idle. It would probably overheat when you started using it, at which time you should notice a difference in pump sound.
Click to expand...
How can you know that for sure?
What if he has a BIM, a pressy and SLI?
I would bet that most systems around here would overheat at idle with no pump
 
Vertigo Acid said:
How can you know that for sure?
What if he has a BIM, a pressy and SLI?
I would bet that most systems around here would overheat at idle with no pump
Click to expand...


The point that people are missing, is in the event of a pump failure, the thing to heat up the fastest will be the processor, thus once the shut down temp is reached the system will shut down. That includes the video cards and everything else in the loop.

Im not saying that is perfect, or that it is guaranteed to prevent damage, but it does provide a certain degree of protection against pump failure.
 
It should be OK i think as long as the shutdown temp is low enough. Nowadays the thermal protection is hardwired so it shuts down whatever the circumstances.
 
Erasmus354 said:
The point that people are missing, is in the event of a pump failure, the thing to heat up the fastest will be the processor, thus once the shut down temp is reached the system will shut down. That includes the video cards and everything else in the loop.

Im not saying that is perfect, or that it is guaranteed to prevent damage, but it does provide a certain degree of protection against pump failure.
Click to expand...
I agree 100% completely. It will overheat and shutdown. What I had a problem with was the claim that most systems would not overheat with no pump attached at idle. :)
 
Vertigo Acid said:
I agree 100% completely. It will overheat and shutdown. What I had a problem with was the claim that most systems would not overheat with no pump attached at idle. :)
Click to expand...
What I meant was that decent systems (i.e. 1/2") with only a CPU block shouldn't overheat at idle. When I first built my loop I unplugged the pump for as long as 15 minutes at idle and the temperatures only went up about 10 degrees C and stayed there.
 
thewhiteguy said:
What I meant was that decent systems (i.e. 1/2") with only a CPU block shouldn't overheat at idle. When I first built my loop I unplugged the pump for as long as 15 minutes at idle and the temperatures only went up about 10 degrees C and stayed there.
Click to expand...

You might have had natural convection kicking in to keep water moving at some (low) flowrate. This isn't guaranteed to happen or be sufficient in all circumstances.
 
kleox64 said:
cant see anything about the threads, will take a look.
This is definetly better than the other flow sensors that do a 360 degree turn (I dont think thats good on flow rate is it :) )
Click to expand...

I originally bought an Aqua Computer flow sensor for my Aquaero, but after looking at it a while I ordered two of the Innovatek flow sensors. It has male 1/4 BSPP threads on it because that is all Innovatek uses. You will need a female 1/4 BSPP to 1/2" tube size compression adapter I believe.
 
iam gona go with the innovatek, just to confirm it has a G1/4 (BSPP) male thread?
 
AFAIK it has a G 1/4 thread, but mine isn't here yet so I can't say for sure, but I already ordered up a couple of G 1/4 x 8mm/6mm female fittings for it.
 
When it goes into Feeding Frenzy I will be posting it to my project log.
 
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