Adding support for Flomec

This info is from a previous thread, but I just installed a QS200-15 that I would like to use. Would it be possible to add support for this (these) flow meter(s), please?

Additionally, could a generic meter model be added in which the user could input arbitrary k-factor and offset?

All Flomec, models:

QS200-15
K = 0.7926

QS200-20
K = 1.3765

QS200-30
K = 3.8444

QS200-40
K = 7.1676

All have an offset of 0.

Thanks.