Now that I have the Porter B-125-6 Flowmeter installed, I am thinking I would like one of the heavier floats (I have the black glass float).
, your calculations on Page 1 reference a chart that reads 10-150. The glass tube on my setup reads 1-15 (same as in your video). I can only assume that my tube reads the same, with the "0" removed from the chart (i.e. my reading of 15 is the same as the charts reading of 150).
If this is true, without changing my regulator metering valve, and installing the flowmeter in place of the Fluval bubble counter, the float is roughly between 14 and 15 (maybe more towards 15). My regulator has always been set at 20psi - and still is. With that said;
Flowmeter reading = 15
Chart conversion = 34.57
CO2 conversion = 0.81
CC/Min CO2 flow = 28.00
Pressure conversion = 1.51 (only because the regulator pressure is slightly higher)
Corrected sccm = 42.28
Long before getting this flow meter I realized that when I increase the regulator pressure from 20psi to 22psi w/o changing the metering valve, I can get another 0.1ph drop on my ph meter (yes it takes a long time, but is repeatable).
If I leave the pressure at 20psi, but open the metering valve 1/4 turn, I can also observe a 0.1ph additional drop on the ph meter.
But, that was just an observation w/o any real flow data. Now with the flow meter, even with the float at the highest reading, I can data log what my previous adjustments were doing to the actual "flow" of co2 into the reactor. Pretty cool.
Now the next challenge is finding a heavier float. Having changed the tube around I realize the float & tube are a "set". So, a B-125-6 tube with a heavier float would be my next quest. I believe somebody else has already tried contacting Porter?