Aqua Computer Highflow Sensor tested

[fox3]

Thanx Shane for comparing those flowmeters.

I was curious how the FHKUC 70 in my rig compared with the other two. Since I am using 3/8" tubing the barbs do not really become a problem but I do like how clean the new AC meter looks and the G1/4 thread is a win.

[Martinm210]

Nice work!

FYI, In an open loop system like that, static pressure does have influence on the pump and flow rate.

For example, if the inlet reservoir has water about 1' higher in elevation than the pump and it's a free fall. The pump will produce a performance curve equal to it's normal pumping curve + 1' H2O. But as that 1' lowers, the performance curve will slowly lower to the normal curve.

Static pressure doesn't do anything in a closed loop because it cancels itself out coming back down and around the loop, but it does matter in open loops, so keep an eye on that.

Anyhow this was an observation I made from some of my bucket pump testing I did a long time ago...bucket elevations do make a difference on flow rate for pumps in bucket tests.

[HESmelaugh]

Thanks for the test. I'm just about to pick up Bach DFS because AC Highflow a bit pricey but doesnt need any adapter. Is there any noise in the AC Highflow with a high flow rate discharge ?

I didn't hear any noise from the flowmeters at higher flowrates.
At very low flow, the Digmesa and the GMR produce a very slight clicking noise, but almost anything else in a system will typically be louder than that.

Nice work!

FYI, In an open loop system like that, static pressure does have influence on the pump and flow rate.

For example, if the inlet reservoir has water about 1' higher in elevation than the pump and it's a free fall. The pump will produce a performance curve equal to it's normal pumping curve + 1' H2O. But as that 1' lowers, the performance curve will slowly lower to the normal curve.

Static pressure doesn't do anything in a closed loop because it cancels itself out coming back down and around the loop, but it does matter in open loops, so keep an eye on that.

Anyhow this was an observation I made from some of my bucket pump testing I did a long time ago...bucket elevations do make a difference on flow rate for pumps in bucket tests.

I hadn't considered that, but I guess it makes sense.
This test setup is one that I wouldn't be able to reproduce accurately for further tests.


EDIT: Updated the first post with a bit on the flowmeters orientations.