If you haven’t used it yet I would advise you to try and switch it for a dura pump meter. Sotera and Gpi meters you have to calibrate for the current fluid every time you switch. Dura pump ones are close enough for me. The dura pump pump is not the best but the meters work better than the other. What I did was put a barb on one end and a camlock on the other the same size, just so you can put it in the line or remove it if you don’t need it. The pumps pump twice or more as fast with no meter. Where you put the meter in the line doesn’t matter, but with a pump I would put it on the discharge side so the pump doesn’t have to suck so hard. Just remember when you hit air the meters go crazy fast.
When I used a pump I gave up on meters and just used the handler numbers to judge volume because of speed. But now I bought a new handler that sucks chemical and I use the meter again. But after buying the new handler that sucks, I would advise everyone that needs a new pump to buy a different handler or redo your current one to suck. It’s way faster, no mess, no wires, I have 3 totes hooked up going through one meter.
Good luck