Restriction Testing
The one downside to adding a flow meter is that the meter itself does cause some restriction. The large King Flow meters even cause restriction, and some flow meters I have tested in the past have really been extremely restrictive. For testing this AC unit, I proceeded with my normal pressure drop testing using a Dwyer digital manometer and King Instruments flow meter.
It tested low in restriction relative to the CPU blocks tested recently which should give you some sense of scale. It is one of the lower restriction flow meters I’ve tested, but at the same time the restriction is still there to some level even with high flow 1/2″ barbs. It’s about 1/4 the restriction of an average CPU block.
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Pretty fascinating product. Excellent review chock full of very useful information as usual Martin.
Thanks! I wanted to make sure I had the accuracy part down since I’m going to use it for rad testing too. Flow meter isn’t something I get to review every day either, so it was fun trying something new.
An excellent review!
Martinm210,I understand you correctly,the settings in Aquaero 5 LT must be such for AC Flow Sensor ???
Compression Fitting ( ID 1/2″ – OD 3/4″) = 159 impulses per liter
Compression Fitting ( ID 3/8″- OD 5/8″) = 169 impulses per liter
thank you
Thanks! Yes, while I haven’t tested a bunch of fittings, the 1/2″ Danger Den came out to 158. I am assuming smaller ID fittings will have a more concentrated stream of flow hitting the impeller causing it to turn slightly faster at the 169 number. Any number between the two will get you to within about 7% accuracy though so it’s not too critical for day to day use.
Hi Martin, i’m very new at this so please bear with me. I have 3 x 680′s, i7 3930 @ 4.5 everything is water cooled including mobo, aquaero 5 XT / PROcontroller and ram (I know RAM is overkill). Using the Koolance dual bay with 2 x mcp 655 (aquacomputer) pumps (1/2 5/8 OD tubing) and the Aquacomputer Flow sensor mps flow 400 with the aquaero 5 XT / PRO, the readings on the flow meter is 204 l/h is this to high or could this be a faulty reading? I cant seem to find any info anywhere since I have this on a serial loop (everyone else is dual), any advice would be appreciated.
btw temps are very low idles is 27*
No, thats about 0.9 Gallons per minute which is fine.
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