I need an air flow meter
- Thread starter rickyb
- Start date
ostrow
It's Dr. Goodluck Himself
Here:
http://www.dwyer-inst.com/htdocs/flow/SeriesRMPrice.cfm
Look around. I use an RMA-23 but others use a 22.
http://www.dwyer-inst.com/htdocs/flow/SeriesRMPrice.cfm
Look around. I use an RMA-23 but others use a 22.
ostrow
It's Dr. Goodluck Himself
Ricky, get a meter that goes at least up to 50lpm. Why? Because skimmers and skimmer pumps are changing fast and you may be swapping that ER for something else, or decide to mod, or whatever. Get one that is a 5 to 50 if you can.
The RMA-22 or RMA-23 are very good. But you have to fenagle the connection so that you are not restricting the air. It is easy to see if the air is restricted because the water rises in the skimmer.
I cut off the end of a mpt x compression fitting, used a knife to gouge out the inside diameter of the fitting, screwed it into my meter, and the water level in the skimmer does not budge. I am confident that the measure of 25lpm I get is accurate. Before gouging it measured 20lpm and the cup overflowed when I had the meter connected.
This will be true of all models.
I also have an mm-20 (I think) with plastic stems on it that you connect the tubing to. Perhaps the inside diameter of those stems could be drilled out. This meter measures 16lpm on my pumps, which is absurdly wrong and evident by the chaos that ensues in the skimmer when I connect it.
All Dwyer meters are good. The issue is the range you wish to measure and then how to connect your air tube.
HTH
The RMA-22 or RMA-23 are very good. But you have to fenagle the connection so that you are not restricting the air. It is easy to see if the air is restricted because the water rises in the skimmer.
I cut off the end of a mpt x compression fitting, used a knife to gouge out the inside diameter of the fitting, screwed it into my meter, and the water level in the skimmer does not budge. I am confident that the measure of 25lpm I get is accurate. Before gouging it measured 20lpm and the cup overflowed when I had the meter connected.
This will be true of all models.
I also have an mm-20 (I think) with plastic stems on it that you connect the tubing to. Perhaps the inside diameter of those stems could be drilled out. This meter measures 16lpm on my pumps, which is absurdly wrong and evident by the chaos that ensues in the skimmer when I connect it.
All Dwyer meters are good. The issue is the range you wish to measure and then how to connect your air tube.
HTH
