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Dwyer Flow Meter

Unexpected

Well-known Member
Tank of the Month
May 7, 2023
622
1,152
Albuquerque
What is the exact meter I need. 100+ Gallon tank which includes a sump. Dwyer RMA-150-TMV or RMA-151-SSV? Also, how does it connect to the the system? Are there additional parts I need to purchase? If so, what are they called and where to get them?
 
This is one I have. RMA-151 and I use it for my 75 gallon. And push around 27 cc/min through which is mid way. Range is 0-50 cc/min.

It came with no needle or tubing connections. It has 1/4” female standard pipe thread connections on top and bottom so I used 1/4” push to connect pneumatic fittings for the tubing.

If you have a good quality needle valve in your regulator you can use this one no problem. I think the SSV has a needle valve built into it but I’m not sure
 
This is one I have. RMA-151 and I use it for my 75 gallon. And push around 27 cc/min through which is mid way. Range is 0-50 cc/min.

It came with no needle or tubing connections. It has 1/4” female standard pipe thread connections on top and bottom so I used 1/4” push to connect pneumatic fittings for the tubing.

If you have a good quality needle valve in your regulator you can use this one no problem. I think the SSV has a needle valve built into it but I’m not sure
URL doesn’t work for me.
 
Yes for CO2. Do I need? No, but having it is a nice feature so I can instantly set flow back after a tank swap.
I also like new tools to play with and looked into these as well. But indeed you really don't need it for the reactor in overflow mode as @Mr.Shenanagins says. Even after a tank swap, flow rate and injection should be stable, and is easy to check if the reactor releases a CO2 bubble from time to time. If you're concerned, then just give a bit more flow until you see more bubbles coming out and you can later dial back again if you want.
I also did not buy a new pH probe, and did not upgrade my CO2 regulator, so my CO2 has become much less of an opportunity to spend money on. My Wallichii tells me when it thinks something is wrong, is a real good indicator for stability, besides the indicators I have from my reactor.
 
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What is the exact meter I need. 100+ Gallon tank which includes a sump. Dwyer RMA-150-TMV or RMA-151-SSV? Also, how does it connect to the the system? Are there additional parts I need to purchase? If so, what are they called and where to get them?
For that size tank if you get one you want the RMA-150-ssv. It's 10-100 cc/min scale which works well with larger tanks. I've used one for many years and wouldn't be without it.
 
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