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[Martinsliquidlab.org] Aquacomputers Aquastream XT Pump Review - Page 2

post #11 of 28
Auto adjust feature temporarily stops pump to test/reset
thinking.gif
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post #12 of 28
Great read as always Martin, your site is the no1 stop for watercooling reviews, cant be beat. thumb.gif
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post #13 of 28
Thread Starter 
Quote:
Originally Posted by Worple;15317358 
Auto adjust feature temporarily stops pump to test/reset
thinking.gif

I think this is only for that initial start up until it tests the restriction level. As long as that stays constant it shouldnt keep doing that. I just noticed during testing if I adjusted the restriction down much at all the pump would sense the increased electrical load and do the stop and slowly ramp up stop and slowly ramp up one more time sensing thing to set a new max HZ level for the new restriction.

This is probably no problem for normal use, but if you change something in you system you can expect it to do some restriction testing and resetting a couple of times.

Just different, but this is a good thing in that the pump is protecting itself from being over driven. In watercooling we all pursue more flow for our blocks and radiators, but very few people actually try to design the right pumping power to match the restriction level. In large industrial pumping systems you have to or you can burn out the pump. The idea is that the restriction level makes the selected pump operate at or near its best operating point which is somewhere in the middle of the pump curve. This sensing feature sort of does that for you and sets the max frequency depending on the restriction level.

So..there is good reason for it despite it being a bit annoying while testing.
    
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post #14 of 28
lol Thanks for that info very true
[/QUOTE] but very few people actually try to design the right pumping power to match the restriction level. In large industrial pumping systems you have to or you can burn out the pump.[/QUOTE]
Edited by Worple - 10/15/11 at 6:34am
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post #15 of 28
Quote:
Originally Posted by Martinm210;15314550 
Actually a GT15 only draws about 1.02 Watts

And the GT14 only draws about .54 Watts:
http://www.overclock.net/water-cooling/859483-round-6-fan-testing-working-thread-8.html#post11273370

So...you could still run about 9 GT14s or 4 GT15s.

That should be enough for a triple rad plus a couple of case fans.thumb.gif

But...if you need more, I'm pretty sure the poweradjust 2 "ULTRA" can be connected to the fan output of the XT. That would give you another 25Watts worth of continuous fan power (48W peak).

I don't know for sure since I don't have one, but thier page makes note about that. (Pardon the chrome translation)


poweradjust_2_1-0ac2540f.jpg

I do have an aquareo 5 I'll be testing/reviewing soon as well, but I wanted to start with the pump as a stand alone review first.

Amigo, your math is correct in that you're using the rated current, as you did in your review. Problem being every electric fan out there requires lots more current than the rated current to start turning over. Once near rated speed, power draw drops to more reasonable numbers we commonly see rated. And Nidec openly tells us this. 5W is plenty to "run" a few AP15s, but it is not enough power to get more than 1 AP15 spinning. Note the "Rated" and "Startup" categories. If you're got a y-splitter on hand (or a multi-meter for that matter) among your toys, you can see.

(See the attached photo of AP14 and AP15 boxes)

Poweradjust 2 is neat, thanks for the info linky!...OTOH for a pump that is selling for over $100USD, would be nice if it wasn't necessary for a small CPU only loop.

XnGLol.jpg
Edited by Skripka - 10/15/11 at 7:38am
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post #16 of 28
Thread Starter 
Good point. I still have my test loop set up though, so I do have an opportunity to do some testing of that 5w fan channel. I'll see what happens if I hook up several fans. It could be their 5 watt rating is continuous and that it can handle more peak for a short period...needs to be tested.

I'll report back what I find...it should be done as part of the review anyhow..smile.gif
    
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post #17 of 28
Auto adjust feature temporarily stops pump to test/reset

If this only when you first run the loop or when something changes then you'd be leak testing so would have no effect of the system it's cooling, the plus of this is if you start getting a blockage in a block it stopping and restarting could be a nice little warning something is wrong smile.gif
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post #18 of 28
got one of these as well connected to an Aquaero 5 Pro + the Shoggy Sandwich decoupling foam

nice to finally see a proper review showing performance is pretty decent! I see a lot of people assuming it's an Eheim 1046 and thus completely worthless, whereas in reality it's (AFAIK) a modded 1048. Hell my other option was getting a D5 and running it at setting 3 or 4, and this turns out to be performing slightly better wink.gif

Running mine at auto(83hz) for 110l/hour or 50hz for 60l/hour for silence (don't notice any difference in temps), and with the Aquaero I have these set to different profiles so I can change them with just a few presses on the remote wink.gif

when I'm adding more blocks I'll probably grab a second one, assuming I'll have enough space smile.gif and Eheim's are supposed to be extremely reliable as well which I like because I'm running my system 24/7

As for the reset/test thing, it simply tests for restriction/optimal frequency every time it gets powered. So therefore it might not be ideal for anyone who is benchmarking on water, but everyone else who isn't turning their pc off and on every 2 minutes shouldn't have an issue with it tongue.gif
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post #19 of 28
Quote:
Originally Posted by Martinm210;15317658 
Just different, but this is a good thing in that the pump is protecting itself from being over driven. In watercooling we all pursue more flow for our blocks and radiators, but very few people actually try to design the right pumping power to match the restriction level. In large industrial pumping systems you have to or you can burn out the pump. The idea is that the restriction level makes the selected pump operate at or near its best operating point which is somewhere in the middle of the pump curve. This sensing feature sort of does that for you and sets the max frequency depending on the restriction level.

Indeed. I did read on another forum (been a while, don't remember which one) that it's possible to hack the firmware and force the pump to run at a set frequency, but it maxes out at about 100Hz; you're better off letting it do it automatically.
Quote:
Originally Posted by n0n44m;15323947 
nice to finally see a proper review showing performance is pretty decent! I see a lot of people assuming it's an Eheim 1046 and thus completely worthless, whereas in reality it's (AFAIK) a modded 1048.

No, it's a 1046, unless you get one either in the UK, or from the sound of it, northern Europe. I don't know why it's like that...
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post #20 of 28
The aquastream XT is based on the housing of the Eheim 1046 but uses a custom-made engine so it is not a real 1046 or 1048.

The firmware of the pump can not be hacked since it is completely encrypted and the CPU also has protection mechanisms against unauthorized access to its internals.

The firm- and software are the key features of this pump that took a lot of development time and money. We have no interest to see that copied to a cheap China clone wink.gif
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