McCrometer FPI Mag Meter paperThe Next Generation Mag Meter is just that, a mag meter! In fit and form the FPI Mag is unique; in function the FPI Mag meter is just that – a mag meter. The important note here is that the FPI Mag is unique. There is nothing on the market comparable to this patented technology. The FPI Mag is comparable to a full bore mag in terms of specifications. The FPI Mag achieves this by measuring flow at various points within the pipe diameter. With an excellent accuracy rating of ± 0.5% from 1 ft/s to 32 ft/s (0.3 m/s to 10 m/s), and ± 1% from 0.3 ft/s to 1 ft/s (0.1 m/s to 0.3 m/s) of reading, but guess what…the FPI Mag can be installed under pressure! Can a full-bore mag meter do that … no!