Aquacomputer flow meter, put it on pump output or input?

almighty15 · 20 Nov 2014 at 18:08

As above, have my flow meter now and not completely sure where best to put it for the most accurate results?

I'm thinking to put it on the return line back to the pump as that'll give the worst case flow rate?

Mynight · 20 Nov 2014 at 18:10

Yeah that would make the most sense. You want to test your loop flow not the pump flow.

zoomee · 20 Nov 2014 at 19:07

yup, thats where I have my flow meter - just before the pump inlet to give a true measure of the water flow AFTER it's been through the restrictive parts of the system (i.e. blocks etc)

NoNameNoNumber · 20 Nov 2014 at 19:12

Lets assume that water is incompressible and you have no leaks... Then pump discharge flow will match return flow. Put the flow meter where ever you like

zoomee · 20 Nov 2014 at 19:20

I don't think it does bud - not when you take into account the restrictions/bottlenecks of the waterblocks (usually the CPU being the most restrictive)- they will slow down the flow of water.

P4Clock · 20 Nov 2014 at 19:35

zoomee said:
I don't think it does bud - not when you take into account the restrictions/bottlenecks of the waterblocks (usually the CPU being the most restrictive)- they will slow down the flow of water.

but the water can only go into the loop at the same speed it comes out or you have a leek

Put it any where you want

NoNameNoNumber · 20 Nov 2014 at 19:56

zoomee said:
I don't think it does bud - not when you take into account the restrictions/bottlenecks of the waterblocks (usually the CPU being the most restrictive)- they will slow down the flow of water.

So where does this water go? You will lose pressure because of restrictions... ie differential pressure between discharge/return but the flow has to be the same... it's a closed loop

Randall8686 · 20 Nov 2014 at 22:31

Simple physics here guys... The flow rate will remain the same round the entire loop! The flow speed will be higher in narrow locations and the pressure might also increase and decrease in location but the flow has to be the same round the entire closed loop.

Laymans terms if you pour one bucket into the loop then one bucket will come out the other end, unless of course you have a leak.

Stick it where ever u like

zoomee · 20 Nov 2014 at 23:46

Randall8686 said:
Stick it where ever u like

Thats wot she said

Thanks for the clarification fellas, learn somat new everyday

Randall8686 · 21 Nov 2014 at 06:49

If you got one that says that. Hat off to your sir

P4Clock · 21 Nov 2014 at 21:04

Randall8686 said:
If you got one that says that. Hat off to your sir

if you can put it mid loop but as i and other have said it dont matter.

almighty15 · 21 Nov 2014 at 22:34

Got the sensor installed and I'm under 1 gallon per minute!!

So I have a couple of Laing D5's coming in the post which I'm planning on using or should I keep my DDC's and run them in serial to try and get my flow rate up?

Minstadave · 21 Nov 2014 at 22:37

NoNameNoNumber said:
Lets assume that water is incompressible and you have no leaks... Then pump discharge flow will match return flow. Put the flow meter where ever you like

Correct.

zoomee said:
I don't think it does bud - not when you take into account the restrictions/bottlenecks of the waterblocks (usually the CPU being the most restrictive)- they will slow down the flow of water.

Incorrect.