where do you guys get your water flow meters?

[john37]

i'm looking for a flow meter for my schuran CA reactor and not sure which one's are good or where to get them. Please let me know. thanks.

 

[john37]

nobody uses a flow meter?

 

[bennyinca]

I heard of these, never seen one before. Anyone else?

 

[Konadog]

Check McMaster Carr, I know they carry air flow meters.

 

[Mchava]

Hey John check with Loc01 he uses them on his CA reactors. I know Dwyer makes them and you can get them from them but its expensive cuase they have an order limit. Let me know if you get some I am also looking for some. Let me see if I can find some info for you.
Mario

 

[jdieck]

You basically have two options.
For quality and precision get a Gilmont Flowmeter. Glass tube and float with teflon stops. The one on the left on the pic.

If your reactor is small and you need a range from 0 to 40 ml/min
get the EW-03230-12 with glass float $95.00
http://www.coleparmer.com/catalog/product_view.asp?sku=0323012&pfx=EW
For a larger reactor you need a range of 0 to 300 ml/min. get the
EW-03230-13 $82.00 also request the glass float. This is the flowmeter used by the high end reactors. It will also work well for small reactors if you do not know how much flow you need (the usual range for most reactors is from 20 ml to 120 ml/min)
http://www.coleparmer.com/catalog/product_view.asp?sku=0323013&pfx=EW

For a more economical piece ($23.00) you can get an acrylic meter from Dwyer. The scale is only about 2" high but can do the job.
The one on the picture but without the valve. The valve is brass and is not suitable for salt water so insure you ask it without the valve.

You have three options:
The RMA 32 for a range of 5 to 50 ml/min for very small reactors
The RMA 33 for a range of 10 to 110 ml/min for small to medium reactors
The RMA 34 for a range of 20 to 300 ml/hr for medium to large reactors
http://www.dwyer-inst.com/htdocs/flow/SeriesRMPrice.cfm#CRA

 

[bennyinca]

That is some great info, thanks! If anyone planning on getting a dwyer unit, and split your s/h costs, I want to get one of those.

 

[laverda]

TOM Aquatics was selling 3/4" ones at RAP. I got picked up one, but I have not used it yet. I got it mostly for testing pumps. I can find out who stocks them or if enough people want one we could do a group buy.

 

[Mchava]

steve I think the once you got are more to test gph. We are looking at ml/h or at least that's what I think. Most will be using them for the reactors like a CA or a zeo or skimmers on some. But if he has some that will measure ml/h then count me in.

 

[jdieck]

The ones I posted are for water (not air for skimmers) and are rated in ml/min (mililiters per minute) although there are different ranges and capacities in the posted links.

 

[laverda]

It reads both GPH and LPH from 50 gallons or 220 liters to 250+ gallons or 1000 liters. It comes with thread on hose barbs. 1" PVC fitting fit the threads.

 

[jdieck]

<a href=showthread.php?s=&postid=7997779#post7997779 target=_blank>Originally posted</a> by laverda
It reads both GPH and LPH from 50 gallons or 220 liters to 250+ gallons or 1000 liters. It comes with thread on hose barbs. 1" PVC fitting fit the threads.

That is a range of 3,000 ml/min to 15,000 ml/min compared to a requirement of only 20 to 300 ml/min in a reactor so I have to conclude that it is extremely large for the application