TL;DRMake the Pump objects report fluid transferred in the same way belts do
What ?When connecting belts to the circuit network, you can measure how much is traveling. This is useful for things such as measuring how much has been pushed total in the course of a few minutes, for example. It would be very useful for some of my outposts to know how much gets pushed through a pipe. The pipes themselves might be hard to measure, since it might not always be clear which direction the fluid is going, but for a pump it is completely unambiguous.
Why ?One example where I found it would be useful is in an outpost where I greatly overproduced petro gas for making plastic on site. I want to replace the petro gas manufacturing at this outpost, and I wanted to measure how much gas is actually being used so I don't waste too much power or space in the process.
An alternate solution is to measure how much plastic is being used and work backwards from there, but measuring the gas itself seemed much more intuitive.