I installed a Aquacomputer D5 pump attached to a Aqualis 450mL with the fountain effect. That goes to my Aquacomputer flow sensor then to a 480MM Aquacomputer rad. I am just confused on how these pumps are stated to run at 300+GPH based on the setup and my sensor is only reading at 47.1 Gal/H at most. I don't have the Aquabus connected as of yet, only connected to the molex connector currently. I am still testing and figuring out everything. Is it because I do not have the 4 pin aquabus cable connected and not having the option of controlling the power?.
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Aquacomputer Flow sensor question. Misunderstood or broken?
- Thread starter JKownz
- Start date
Erasmus354
[H]F Junkie
- Joined
- Mar 12, 2004
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- 9,450
The D5 has variable speed so it could be that it isn't running at its max speed setting. Also the normal flowrate for a D5 pump in a medium restriction loop is somewhere around 100GPH. 300+GPH would be in a zero restriction environment on a pump that is overvolted to run extra fast, which you are never going to have in real life. If your loop is high restriction 47.1 GPH wouldn't be unheard of. Another factor would be whether you have the flow sensor properly calibrated. I am pretty sure the type of fittings you use on the flow sensor effects the calibration settings it needs to have to read the flow rate properly.
From http://www.martinsliquidlab.com/ : 1,2,3,4,5 are the different speed settings of the pump. Black lines represent low/high restriction loop curves. Intersection of black and colored lines are what the flow rate would be for that theoretical setup.
From http://www.martinsliquidlab.com/ : 1,2,3,4,5 are the different speed settings of the pump. Black lines represent low/high restriction loop curves. Intersection of black and colored lines are what the flow rate would be for that theoretical setup.
Im headed over to FrozenCpu later today and picking up a Aquabus cable. Im going to play with the pump settings that way. I have it calibrated to 169 Calibration Value based on the Flow sensors settings. I am using Monsoon fittings on the flow sensor. Im not sure if that could be the case. Im going to play with it and find out. Thanks for the info 
Im headed over to FrozenCpu later today and picking up a Aquabus cable. Im going to play with the pump settings that way. I have it calibrated to 169 Calibration Value based on the Flow sensors settings. I am using Monsoon fittings on the flow sensor. Im not sure if that could be the case. Im going to play with it and find out. Thanks for the info
Not sure if they've updated the D5 as of late but I don't know if it can be sped up or down via an aquabus? Guess i don't have any aquabus exp either but I'd be suspect that it could control a D5 via its molex connector? I know on my D5 there's a dial on the back of the pump you physically have to turn to speed it up or down. Personally i run mine on 3 as i get sufficient flow and much lower noise than 4 or 5 speed.
yea the USB version does not have the dial in the back. I honestly should have gotten that one instead. But I have the aquaero 5
Ahh that's cool, i searched for it and see that aquacomputer actually has a special version of the D5. hopefully that clears everything up for you.